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JavaScript - Client Side Local Storage In Html5
Please help with some javascript for client side storage in html5 mobile safari. Here we wish to use local storage [persistent].
The page index.html has a list of links to question pages e.g. question1.html. When question1.html is answered correctly the page goes to answer1.html. From here, the page moves back to index.html by pressing a button. The button has 2 actions: goto index.html place a key/value pair in local storage - e.g. localStorage.setItem("name", "answer1"); On reloading, the index.html page then asks the local storage if the key/value pair ("name" "answer1") is stored. If yes, a new graphic appears next to the link. If no, the old graphic remains. Thank you for any help. Similar TutorialsI run Windows 7 and IE9, and I believe IE9 supports HTML5 Local Storage. But when I run this offline (locally) in IE9 Code: <script type="text/javascript">
function testSupport() {
if (localStorage) {return "Local Storage: Supported"}
else {
return "Local Storage: NOT supported";
}
}
alert ( testSupport() );
</script>
I get "LocalStorage: NOT supported". Chrome returns "Local Storage: Supported" My DOCTYPE is <!DOCTYPE html> Other tests also fail in IE. Example: Code: localStorage.setItem("name", "Hello World!");
alert(localStorage.getItem("name"));
Above works in Chrome. Any advice, please? Have I not configured IE9 properly? I've been avoiding php and asp trying to do as much client-side as possible, as lightweight as possible, but don't know enough to know if I should go that route. I want to have several js/jquery games, really simple stuff like flash cards, memory games, matching, etc Currently when you do something correctly it adds 5 points like: points+=5; and if you get it wrong lose 3 points: points-=3; At the end of the game it flashes a play again button which resets points and all the cards, and that's it. So I was trying to think of ways to add a global variable that adds the latest score to it, and maybe gives you a random "prize" which would be another variable randomly selected from an array of "prizes", or better yet, "achievements"....between games....on the same domain. I'd like to eventually make something similar to a "crafting" system, where if you have 3 particular achievements you can convert them into some new achievement...I imagine just a function that checks if you have the 3 objects, then if so it adds some 4th object and removes the first 3. I was avoiding server side databases because I was avoiding authentication/user accounts for the time being...I would probably eventually like to let people play games, and if they want to save their scores long term, register an account....but if they don't want to register an account, I'd like them to have the same functionality for that session, where they can play a few games from around the site while accumulating a global score and list of achievement variables. I was messing around with jstorage, but am not sure if it will work for what I'm thinking....it only accepts strings, and I couldn't figure out how to write the variableName.toString() into the jstorage "value" of the key:value pair...it gives me the impression it's more for storing form data as a convenience to the user. So is there a client side variable storage that's simple, lightweight, and works with mobile? Or a way to write .toString() value of objects into jstorage? Or should I just break down and start investigating my server side options? Is there some middle ground where stuff can be done client side, then give the option to register to save that information long term? edit::I'm thinking of my 3 year old nieces ipad games, they're simple drag drop, highlight shapes, pattern association, etc but I want it so each time you play it remembers where you left off...basically a cookie would have been cool if it were bigger and not sent every packet....so kinda a "save-state" and "load-state" functionality.. edit2::sqlite seems like a legitimate option but then reading through it, it gets convoluted how to implement on my bluehost account... I want to have an example on web storage. I have an index.html page. On this page, there is a button which will go to another page, that is page1.html. On this page now, there is another button which will go to page2.html if clicked. Index.html > page1.html > page2.html Suppose if a user has already visited page2.html on the first time, how to make him/her goes directly on page2.html after clicking the button on index.html? The user must not again go to page1.html to get page2.html because he/she has already done that. I want to know how to store page sessions with HTML5 so that the user gets on his/her last visited page when he/she clicks the button. Thank. Hi all, I have some code that attempts to save a user's preference settings. It first tries to use "localStorage", and if that fails (only old versions of MSIE), then a cookie is used instead. I tried several different tests, such as: Code: if (localStorage) {
alert('True');
} else {
alert('False');
}
and....... if (typeof localStorage).... and....... if (typeof localStorage == 'object').... but none of these are reliable. For example, if I intentionally misspell "localStorage" by instead using "localStor" (simulating a browser that doesn't understand the object name), the code simply does not run. What I ultimately want is this: Code: if (user_wants_to_save_settings && localStorage) {
save_to_local_storage;
} else
if (user_wants_to_save_settings) {
save_to_cookie;
}
...unfortunately, that doesn't work. Anyone have ideas? I've been staring at this too long and am probably missing the obvious.... Thanks! -- Roger I am working on a web app for the iPad and I am storing all my content in cookies. I am wondering how easy it is to transfer it to Local Storage. I'll post all the scripts that set cookies below: Code: jQuery.cookie = function (a, b, c) {
if (typeof b !== "undefined") {
c = c || {};
if (b === null) {
b = "";
c.expires = -1;
}
var d = "";
if (c.expires && (typeof c.expires === "number" || c.expires.toGMTString)) {
var e;
if (typeof c.expires === "number") {
e = new Date();
e.setTime(e.getTime() + c.expires * 24 * 60 * 60 * 100000);
} else {
e = c.expires;
}
d = "; expires=" + e.toUTCString();
}
var f = c.path ? "; path=" + c.path : "";
var g = c.domain ? "; domain=" + c.domain : "";
var h = c.secure ? "; secure" : "";
document.cookie = [a, "=", encodeURIComponent(b), d, f, g, h].join("");
} else {
var i = null;
if (document.cookie && document.cookie !== "") {
var j = document.cookie.split(";");
for (var k = 0; k < j.length; k++) {
var l = jQuery.trim(j[k]);
if (l.substring(0, a.length + 1) === a + "=") {
i = decodeURIComponent(l.substring(a.length + 1));
break;
}
}
}
return i;
}
};
$(window).unload(function () {
$(".remember").each(function () {
$.cookie(this.id, this.value, {
expires: 365
});
});
$(".draggable").each(function () {
var a = $(this);
$.cookie(this.id, a.css("top") + "_" + a.css("left"), {
expires: 365
});
$.cookie("disp" + this.id, a.css("display"), {
expires: 365
});
});
});
$(function () {
var a, b, c;
setInterval(checkOrientAndLocation, 1000);
$(".remember").each(function () {
var a = $.cookie(this.id);
if (a) {
this.value = a;
}
});
$(".draggable").each(function () {
var a = $.cookie(this.id);
if (a) {
a = a.split("_");
$(this).css({
position: "absolute",
top: a[0],
left: a[1]
});
}
var b = $.cookie("disp" + this.id);
if (b) {
this.style.display = b;
}
}).touch({
animate: false,
sticky: false,
dragx: true,
dragy: true,
rotate: false,
resort: false,
scale: false
});
});
function toggle_visibility(a) {
var item = $("#" + a);
item.fadeToggle();
$.cookie("disp" + a, item.css("display"));
}
var _target = null,
_dragx = null,
_dragy = null,
_rotate = null,
_resort = null;
var _dragging = false,
_sizing = false,
_animate = false;
var _rotating = 0,
_width = 0,
_height = 0,
_left = 0,
_top = 0,
_xspeed = 0,
_yspeed = 0;
var _zindex = 1000;
jQuery.fn.touch = function (a) {
a = jQuery.extend({
animate: false,
sticky: false,
dragx: true,
dragy: true,
rotate: false,
resort: false,
scale: false
}, a);
var b = [];
b = $.extend({}, $.fn.touch.defaults, a);
this.each(function () {
this.opts = b;
this.ontouchstart = touchstart;
this.ontouchend = touchend;
this.ontouchmove = touchmove;
this.ongesturestart = gesturestart;
this.ongesturechange = gesturechange;
this.ongestureend = gestureend;
});
};
var currentRotation = null;
function setOrientation() {
switch (window.orientation) {
case 0:
orient = "portrait";
break;
case 90:
orient = "landscape";
break;
case -90:
orient = "landscape";
break;
}
currentRotation = window.orientation;
document.body.setAttribute("orient", orient);
setTimeout(scrollTo, 0, 0, 1);
}
function checkOrientAndLocation() {
if (currentRotation !== window.orientation) {
setOrientation();
}
}
function gestureend(a) {
_sizing = false;
_rotating = (_rotating + a.rotation) % 360;
}
function gesturechange(a) {
if (_sizing) {
_width = this.opts.scale ? Math.min(parseInt(_sizing[0], 8) * a.scale, 300) : _sizing[0];
_height = this.opts.scale ? Math.min(parseInt(_sizing[1], 10) * a.scale, 300) : _sizing[1];
_rotate = this.opts.rotate ? "rotate(" + (_rotating + a.rotation) % 360 + "deg)" : "0deg";
$("#" + this.id).css({
width: _width + "px",
height: _height + "px",
webkitTransform: _rotate
});
$("#" + this.id + " b").text("");
$("#" + this.id).css({
backgroundColor: ""
});
}
}
function gesturestart(a) {
_sizing = [$("#" + this.id).css("width"), $("#" + this.id).css("height")];
}
function touchend(a) {
$(a.changedTouches).each(function () {
if (!a.targetTouches.length) {
_dragging = false;
if (_animate) {
_left = $("#" + _target).css("left") === "auto" ? this.pageX : parseInt($("#" + _target).css("left"), 10);
_top = $("#" + _target).css("top") === "auto" ? this.pageY : parseInt($("#" + _target).css("top"), 10);
var b = _dragx ? _left + _xspeed + "px" : _left + "px";
var c = _dragy ? _top + _yspeed + "px" : _top + "px";
if (_dragx || _dragy) {
$("#" + _target).animate({
left: b,
top: c
}, "fast");
}
}
}
});
$("#" + _target + " b").text("");
$("#" + _target).css({
backgroundColor: ""
});
}
function touchmove(a) {
if (_dragging && !_sizing && _animate) {
var b = isNaN(parseInt($("#" + _target).css("left"), 10)) ? 0 : parseInt($("#" + _target).css("left"), 10);
var c = isNaN(parseInt($("#" + _target).css("top"), 10)) ? 0 : parseInt($("#" + _target).css("top"), 10);
}
$(a.changedTouches).each(function () {
a.preventDefault();
_left = this.pageX - parseInt($("#" + _target).css("width"), 10) / 2;
_top = this.pageY - parseInt($("#" + _target).css("height"), 10) / 2;
if (_dragging && !_sizing) {
if (_animate) {
_xspeed = Math.round((_xspeed + Math.round(_left - b)) / 1.5);
_yspeed = Math.round((_yspeed + Math.round(_top - c)) / 1.5);
}
if (_dragx || _dragy) {
$("#" + _target).css({
position: "absolute"
});
}
if (_dragx) {
$("#" + _target).css({
left: _left + "px"
});
}
if (_dragy) {
$("#" + _target).css({
top: _top + "px"
});
}
if (_dragx || _dragy) {
$.cookie(_target, ($("#" + _target).css("top") || "") + "_" + ($("#" + _target).css("left") || ""));
}
$("#" + _target).css({
backgroundColor: ""
});
$("#" + _target + " b").text("");
}
});
}
function touchstart(a) {
_target = this.id;
_dragx = this.opts.dragx;
_dragy = this.opts.dragy;
_resort = this.opts.resort;
_animate = this.opts.animate;
_xspeed = 0;
_yspeed = 0;
$(a.changedTouches).each(function () {
var b = $("#" + _target).css("left") === "auto" ? this.pageX : parseInt($("#" + _target).css("left"), 10);
var c = $("#" + _target).css("top") === "auto" ? this.pageY : parseInt($("#" + _target).css("top"), 10);
if (!_dragging && !_sizing) {
_left = a.pageX - b;
_top = a.pageY - c;
_dragging = [_left, _top];
if (_resort) {
_zindex = $("#" + _target).css("z-index") === _zindex ? _zindex : _zindex + 1;
$("#" + _target).css({
zIndex: _zindex
});
}
}
});
}
function killAllCookies() {
$(window).unbind("unload");
var a = document.cookie.split(";"),
b = a.length - 1;
for (b; b > -1; --b) {
$.cookie(a[b].split("=")[0], "", {
expires: -1
});
setTimeout("location.reload(true);", 1);
}
}
I realize this is a big thing to ask, so if anyone has some free time and possibly wants to help me, I would be extremely thankful. I have set's of radio buttons that have on click functions, and when i restore the form data i would like the onclick functions to re-calculate. Is there a simply way such as if this.checked = true run onclick function that i can apply to every radio with onload???
Reply With Quote 01-10-2015, 01:51 PM #2 Philip M View Profile View Forum Posts Supreme Master coder! Join Date Jun 2002 Location London, England Posts 18,371 Thanks 204 Thanked 2,573 Times in 2,551 Posts You cannot auto-click for security reasons. But you can use local storage to keep the status of the radio buttonds and reinstate them on page reload. You can then run a script to do whatever is required. Hi people, I need help as follows: On the server side I have a php generated session parameter. I need to pass it to javascript on the client side page. I saw on the web the following solution: <script language="JavaScript"> var mySessionVar="<%= Session["MySessionVar"] %>"; </script> I tried it but it did not work. I could not find any explanation of this syntax - will appreciate one. Any suggestions, maybe in another way? Thanks is "localStorage" a native variable to javascript? On lin 36 & 37 is there anything else involved in getting that local storage to store? Those lines are local storage right? Is it really that easy? I was just reading this HUGE post and immediately stressed me out. I'm used to working off small examples and diving in bit by bit. It was the first article on google so I trusted it to be the most appropriate for introductions. (which means not reading more than 500 words before I get some sample code) In addition, can Google Chrome & FireFox extensions change page elements? The reason I think it can do this is because google chrome says this Which (to me) implies that the extension has access to page data. If that is the case. How are localStorage variables not mixing? How can I access that page data? I don't care about browser history, I just want to change page elements. Is this possible? If this is the case. Is there a way I can have the extension close itself or not open at all? Sometimes I just want the "extension" to provide a simple function. That's all. Thanks! I had Silverbird and the tutorialzine example extension. They were both different size. Odd thing is that I never saw a size specification in the style.css in the tutorialzine example. How can I specify the size of the popup extension? Please help, I have built a HTML5 ap with local database using phonegap, I am now testing in xcode... my ap works fine in Web Kit browser but when I test on my iphone through xcode, I get the error message: There has been an error: no such table: **** here is my code: Code: <script type="text/javascript">
var html5rocks = {};
html5rocks.webdb = {};
html5rocks.webdb.db = null;
html5rocks.webdb.open = function() {
var dbSize = 10 * 1024 * 1024; // 10MB
html5rocks.webdb.db = openDatabase("Todo", "1.0", "Todo manager", dbSize);
}
html5rocks.webdb.createTable = function() {
var db = html5rocks.webdb.db;
db.transaction(function(tx) {
tx.executeSql("CREATE TABLE IF NOT EXISTS bmical(ID INTEGER PRIMARY KEY ASC, height1 TEXT, weight1 TEXT, bmires TEXT, added_on DATETIME)", []);
tx.executeSql("ALTER TABLE bmical ADD bmires INTEGER");
});
}
html5rocks.webdb.addTodo = function(todoText) {
var db = html5rocks.webdb.db;
db.transaction(function(tx){
var weight1 = document.getElementById("weight1").value;
var height2 = todoText / 100
var BMI = weight1 / (height2 * height2)
var BMI = BMI;
var bmires = BMI.toFixed(3);
var addedOn = new Date();
tx.executeSql("INSERT INTO bmical(height1, weight1, bmires, added_on) VALUES (?,?,?,?)",
[todoText, weight1, bmires, addedOn],
html5rocks.webdb.onSuccess,
html5rocks.webdb.onError);
});
}
html5rocks.webdb.onError = function(tx, e) {
alert("There has been an error: " + e.message);
}
html5rocks.webdb.onSuccess = function(tx, r) {
// re-render the data.
html5rocks.webdb.getAllTodoItems(loadTodoItems);
}
html5rocks.webdb.getAllTodoItems = function(renderFunc) {
var db = html5rocks.webdb.db;
db.transaction(function(tx) {
tx.executeSql("SELECT * FROM bmical ORDER BY added_on ASC", [], renderFunc,
html5rocks.webdb.onError);
});
}
html5rocks.webdb.deleteTodo = function(id) {
var db = html5rocks.webdb.db;
db.transaction(function(tx){
tx.executeSql("DELETE FROM bmical WHERE ID=?", [id],
html5rocks.webdb.onSuccess,
html5rocks.webdb.onError);
});
}
function loadTodoItems(tx, rs) {
var rowOutput = "";
var todoItems = document.getElementById("todoItems");
for (var i=0; i < rs.rows.length; i++) {
rowOutput += renderTodo(rs.rows.item(i));
}
todoItems.innerHTML = rowOutput;
}
function renderTodo(row) {
return "<li>On: <span>" + row.added_on + "</span> Height: <span>" + row.height1 + "cm</span> Weight: <span>" + row.weight1 + "lbs</span> BMI: <b>" + row.bmires + "</b><a class='delete' href='javascript:void(0);' onclick='html5rocks.webdb.deleteTodo(" + row.ID +");'>Delete</a></li>";
}
function init() {
html5rocks.webdb.open();
html5rocks.webdb.createTable();
html5rocks.webdb.getAllTodoItems(loadTodoItems);
}
function addTodo() {
var height1 = document.getElementById("height1");
html5rocks.webdb.addTodo(height1.value);
height1.value = "";
}
</script>
I have been interested in APIs in the last time and i want to know exactly how it works from the server side. so i tried to figure out how the client side API working , first step i took the Google Plus One JS client side code and i tried to figure out how it works , mostly i tried to find how it gets connect to the server side. i couldn't find what this whole code doing , mainly because i focused to find Ajax requests , but there is none of them. this is the api I checked : https://apis.google.com/js/plusone.js now , my questions is simple , i want to know how API connect to the server side , do they use AJAX? what exactly they use to send request to server side ? i need you're help to know more on how api working on Client side , mainly on the connect to the server. so , how it get's done? Hello, I have two problems. Firstly I am trying to make a form with client side validation but I have come across a problem. I need to validate the whole form under just one button but for validating email and phone number I have two different buttons and I am not sure how to make all the code run under just one button when it is submitted. The second problem is with validating the phone number. I am sure the code and javascript is fine, but for some reason it will not work. Here is my code: HTML Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<script type="text/javascript" src="client_validation.js" />
</script>
<link rel="stylesheet" type="text/css" href="Client validation.css" />
<title> Client Validation </title>
</head>
<body>
<form name="contact_form" method="post" action="submit" onsubmit="return validate_form ( );">
<h3><strong>Client Validation</strong></h3>
<p>Your Name: <input type="text" name="text1"></p>
<p>Your Last Name: <input type="text" name="text2"></p>
<p>Email: <input type="text" id="email" name="text3"></p>
<p>Phone: <input type="text" name="text4"></p>
<p>Address: <textarea cols="20" rows="5" name="text5"></textarea></p>
<p>Do you agree to the Terms and Conditions?
<input type="checkbox" name="text6" value="Yes"> Yes
<p><input type="submit" name="send" value="Send Details"></p>
</form>
Your Email: <form id="form_id" method="post" action="action.php" onsubmit="javascript:return validate('form_id','email');">
<input type="text" id="email" name="email" />
<input type="submit" value="Submit" />
<form method="post" action="data.php" name="form1">
<p>Enter Number
<input type="text" name="phoneNo"></p>
<input type="button" name="btn1" value="submit" onClick="CheckNumber()">
</body>
</html>
JAVASCRIPT Code: function validate_form ( )
{
valid = true;
if ( document.contact_form.text1.value == "" )
{
alert ( "Please fill in the 'Your First Name' box." );
valid = false;
}
if ( document.contact_form.text2.value == "" )
{
alert ( "Please fill in the 'Your Last Name' box." );
valid = false;
}
if ( document.contact_form.text5.value == "" )
{
alert ( "Please fill in your address." );
valid = false;
}
if ( document.contact_form.text6.checked == false )
{
alert ( "Please check the Terms & Conditions box." );
valid = false;
}
return valid;
}
function validate(form_id,email) {
var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
var address = document.forms[form_id].elements[email].value;
if(reg.test(address) == false) {
alert('Invalid Email Address');
return false;
}
}
function CheckNumber() {
var PhoneNumber=document.form1.phoneNo.value;
for (var i=0; i<PhoneNumber.length; i++) {
var c=PhoneNumber.charAt(i);
if (!(c>0 || c<9)){
alert("This is not a valid Phone Number");
break;
} } }
I hope you guys can help. Thank you i am making a registration page for my website and for validation using javascript...is there any way to know on my client side javascript enable or not....
Hello, and thank you for taking the time to read over my thread. I'm pretty new with Javascript coding and have been working with an example script for a new membership registration form. The original form seemed to have worked for most intents and purposes but it only contained one entry for a password field. Naturally I felt it needed a conformation field and have tried to stick one in, which is where I ran into problems. I successfully made the script throw an alert box if the two forms are the same, but it then throws another alert box of undefined function as well as throwing the same undefined function alert box even if the fields are a match. Hopefully a knowledgeable person could take a quick look at this and kindly inform me of where I'm going wrong? The code contains two of my numerous attempts to make it work (one commented out, it was easier to remember different things I have tried before to leave then in but commented out, I'm sure you all are quite familiar with that idea). Anyhow, here's the code, thank you in advance. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Register</title>
<link href="css/master.css" rel="stylesheet" type="text/css" />
<style> .signup {border:1px solid #999999}</style>
<script>
function validate(form) {
fail = validateFirstname(form.firstname.value)
fail += validateSurname(form.surname.value)
fail += validateUsername(form.username.value)
fail += validatePassword(form.password.value)
fail += validateConfirmpass(form.confirmpass.value)
fail += validateAge(form.age.value)
fail += validateEmail(form.email.value)
if (fail == "") return true
else { alert(fail); return false }
}
</script>
<script>
function validateFirstname(field) {
if (field == "") return "No First name entered. \n"
return ""
}
function validateSurname(field) {
if (field == "") return "No Surname entered. \n"
return ""
}
function validateUsername(field) {
if (field == "") return "No Username was entered. \n"
else if (field.length < 5) return "Usernames must be at least 5 characters. \n"
else if (/[^a-zA-Z0-9_-]/.test(field)) return "Only a-z, A-Z, 0-9, - and _ are valid in Usernames. \n"
}
function validatePassword(field) {
if (field == "") return "No Password was entered. \n"
else if (field.length < 6) return "Passwords must be at least 6 characters. \n"
else if (!/[a-z]/.test(field) || ! /[A-Z]/.test(field) || !/[0-9]/.test(field)) return "For your account security Passwords require atleast one uppercase, one lowercase, and one number to be valid. \n"
}
function validateConfirmpass() {
var p1 = document.getElementById('password').value;
var p2 = document.getElementById('confirmpass').value;
if (p1 !== p2) alert("The password fields do not match.");
}
//function validateConfirmpass(field) {
// var password = document.getElementById('password').value;
// var confirmpass = document.getElementById('confirmpass').value;
// if (password !== confirmpass) {
// return "The password and confirmation do not match. \n"
// }
//}
function validateAge(field) {
if (isNaN(field)) return "No Age was entered.\n"
else if (field < 18 || field >110) return "Age is required to be between 18 and 110 years. \n"
return ""
}
function validateEmail(field) {
if (field == "") return "No Email was entered. \n"
else if (!((field.indexOf(".") > 0) && (field.indexOf("@") > 0)) || /[^a-zA-Z0-9.@_-]/.test(field)) return "The Email address entered is invalid. \n"
return ""
}
</script>
</head>
<body>
<table class="signup" border="0" cellpadding="2" cellspacing="5">
<th colspan="2" align="center">Registration Form</th>
<form method="post" action="tnssignup.php" onsubmit="return validate(this)">
<tr><td>First name</td><td><input type="text" maxlength="32" name="firstname" /></td>
</tr><tr><td>Surname</td><td><input type="text" maxlength="32" name="surname" /></td>
</tr><tr><td>Username</td><td><input type="text" maxlength="16" name="username" /></td>
</tr><tr><td>Password</td><td><input type="text" maxlength="12" id="password" name="password" /></td>
</tr><tr><td>Confirm Password</td><td><input type="text" maxlength="12" id="confirmpass" name="confirmpass" /></td>
</tr><tr><td>Age</td><td><input type="text" maxlength="3" name="age" /></td>
</tr><tr><td>Email</td><td><input type="text" maxlength="64" name="email" /></td>
</tr><tr><td colspan="2" align="center"> <input type="submit" value="Register" /></td>
</tr></form></table>
</body>
</html>
I wish to change the dynamic text in a javascript to that which is in a MySQL database using PHP. this is then used in a flash scroller. currently i have hard coded the text in the javascript file. is there a way to have PHP run in the javascript file before it is sent to the endusers? or another way ? Hi, The following code is not working whose purpose is to validate the form with javascript. Please Help . Code: <html>
<head>
<script type='text/javascript'>
function formValidator()
{
// Make quick references to our fields
var firstname = document.getElementById('firstname');
var addr = document.getElementById('addr');
var zip = document.getElementById('zip');
var state = document.getElementById('state');
var username = document.getElementById('username');
var password = document.getElementById('passwd');
var email = document.getElementById('email');
var cpassword=document.getElementById('pass2');
var txtar=document.getElementById('ta');
var rad=document.getElementById('r1');
var cbox =document.getElementById('r1');
// Check each input in the order that it appears in the form!
if(isAlphabet(firstname, "Please enter only letters for your name"))
{
if(isAlphanumeric(addr, "Numbers and Letters Only for Address"))
{
if(isNumeric(zip, "Please enter a valid zip code"))
{
if(madeSelection(state, "Please Choose a State"))
{
if(lengthRestriction(username, 6, 8))
{
if(plengthRestriction(password,4,6))
{
if(confpass(cpassword,"Please confirm"))
{
if(emailValidator(email, "Please enter a valid email address"))
{
if(istextareablank(txtar,"Please enter some text"))
{
if(isradiobuttselected(rad,"Please select any one radio buttons"))
{
if(ischeckboxselected(cbox,"Please select at least one checkbox"))
{
return true;
}
}
}
}
}
}
}
}
}
}
}
return false;
}
function notEmpty(elem, helperMsg){
if(elem.value.length === 0){
alert(helperMsg);
elem.focus(); // set the focus to this input
return false;
}
return true;
}
function isNumeric(elem, helperMsg){
var numericExpression = /^[0-9]+$/;
if(elem.value.match(numericExpression)){
return true;
}else{
alert(helperMsg);
elem.focus();
return false;
}
}
function isAlphabet(elem, helperMsg){
var alphaExp = /^[a-zA-Z]+$/;
if(elem.value.match(alphaExp)){
return true;
}else{
alert(helperMsg);
elem.focus();
return false;
}
}
function isAlphanumeric(elem, helperMsg){
var alphaExp = /^[0-9a-zA-Z]+$/;
if(elem.value.match(alphaExp)){
return true;
}else{
alert(helperMsg);
elem.focus();
return false;
}
}
function lengthRestriction(elem, min, max)
{
var uInput = elem.value;
if(uInput.length >= min && uInput.length <= max){
return true;
}else{
alert("Please enter username between " +min+ " and " +max+ " characters");
elem.focus();
return false;
}
}
function plengthRestriction(elem, min,max)
{
var uInput = elem.value;
if(uInput.length >= min && uInput.length <= max){
return true;
}else{
alert("Please enter password between " +min+ " and " +max+ " characters");
elem.focus();
return false;
}
}
function madeSelection(elem, helperMsg){
if(elem.value == "Please Choose"){
alert(helperMsg);
elem.focus();
return false;
}else{
return true;
}
}
function emailValidator(elem, helperMsg){
var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
if(elem.value.match(emailExp)){
return true;
}else{
alert(helperMsg);
elem.focus();
return false;
}
}
function confpass(elem,helperMsg)
{
if ( confPasswd === "" )
{
alert("Please fill in the Confirm Password");
document.forms[0].elements[7].focus( );
return false;
}
else if (document.forms[0].elements[6].value != document.forms[0].elements[7].value)
{
alert( "Your passwords do not match. Please retype and try again.");
return false;
}
}
function isEmpty(s) {
return ((s === null) || (s.length === 0));
}
function istextareablank(elem,helperMsg){
var i;
<!-- Is empty? -->
if (isEmpty(s)) return true;
<!-- Search through string's' characters one by one until we find a non-whitespace character. -->
for (i=0; i < s.length; i++) {
<!-- Check that current character isn't' whitespace.-->
var currchar = s.charAt(i);
if (whitespace.indexOf(currchar) == -1)
return false;
}
<!-- All characters are whitespace. -->
return true;
}
function isradiobuttselected(elem,helperMsg){
<!-- Check to see if atleast one is checkbox checked or not-->
for (j=10; j<=11; j++) {
if(document.forms[0].elements[j].checked) {
break;
}
else if (j>=11) {
alert("Atleast Check on one of the radio buttons");
document.forms[0].elements[j].focus();
return (false);
}
}
return(true);
}
function ischeckboxselected(elem,helperMsg)
{
for (j=12; j<=13; j++) {
if(document.forms[0].elements[j].checked) {
break;
}
else if (j>=13) {
alert("Atleast Check on One of Our Services");
document.forms[0].elements[j].focus();
return (false);
}
}
return(true);
}
</script>
</head>
<body>
<form onsubmit='return formValidator()' >
<br />
First Name: <input type='text' id='firstname' /><br /><br />
Address: <input type='text' id='addr' /><br /><br />
Zip Code: <input type='text' id='zip' /><br /><br />
State: <select id='state'>
<option>Please Choose</option>
<option>AL</option>
<option>KE</option>
<option>TX</option>
<option>CH</option>
</select><br />
Username(6-8 characters): <input type='text' id='username' /><br /><br />
Password(min 4 chars):<input type="password" id='passwd' /> <br/><br />
Confirm Password: <input id="pass2" Type="password" /><br/><br />
Email: <input type='text' id='email' /><br /><br />
Something
about Yourself : <textarea name="1" cols="17" rows="4" id="ta"></textarea><br/><br />
Free Membership
<input type="radio" id="r1"/> Paid Membership <input type="radio" id="r1"/><br/><br/>
Friendship<input type="checkbox" id="box1" /> Networking <input type="checkbox" id="box1" /><br /><br />
<input type='submit' value='Submit' />
</form>
</body>
</html>
I am developing a mobile app. I have a script that will read the contents of a csv into an array. It works great, however I am not sure how to take that array and insert it into a db. The following is the script that reads the csv -- function IO(U, V) { var X = !window.XMLHttpRequest ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest; X.open(V ? "PUT" : "GET", U, false); X.setRequestHeader("Content-Type", "text/html"); X.send(V ? V : ""); return X.responseText; } var mycells = IO('data.csv').split(/\n/g).map(function(a){return a.split(/\t/g)} ) I want to insert the array 'mycells' into the db but do not know what the correct syntax would be. t.executeSql('INSERT INTO mytable (name, phone, street, city, state) VALUES (????????????... Thanks for any helps that is sent my way! Hi All, I'm working on a javascript-only application that queries an in-memory database, at times requests (all internal to the JS app) are lengthy, so I need to post a "Processing..." overlay atop the clicked UI tab to provide user feedback that something is actually happening. For the life of me I cannot figure out how to push the "Processing..." content to the screen while the DB lookup is underway. It appears that there's only one shot at updating the display, and that's when all JS processing has concluded (ie, the data has been looked up and is displayed). Any tips would be greatly appreciated, what I wish to do may not be possible? Thanks in advance for your assistance! JD Hi, I am trying to write a small web app that is used to do some plots for over-the-time-collected data (children's growth measurements). The current objective is to re-use entered data. As I do not want to store anything on the server (which would lead to all the annoying username-password-stuff), nor in cookies, I would like put measurements into a local file and reload them into the HTML entering form. I know and fully appreciate that javascript is not able to read or write files; it is on the other hand obvious that this can be bypassed if I upload the respective file to the server which returns it in an ajax fashion. My main question is now: Is it possible to do some kind of internal upload, that ends up in a read of a local file? Something like a <form method="post" action="localscriptname" ...> with an <input type="file"...> field? Another (off-topic) question: My plots are in PDF format. I accidentally appended some data to the PDF file which did not cause any problems for the pdf readers. Can I rely on the fact that any pdf reader will ignore data after the %%EOF mark, but will keep it if a file is downloaded, directly opened by acroread or whatever, and later saved from the reader program? This would allow it to keep the plot and the raw data in one file and might be helpful for the not-so-computer-affine target audience of my program. Greetings! Hi, I am creating a HTML page and mailing it to the user(client side). This html page contains a Table and a button. On button click, I would like to create another HTML page based on the detail in the table,dynamically on run time and Open the newly created HTML. I need to use javascript to achieve this functionality. I have no Server-Client Configuration. And I need to run the Javscript only on client side to process the First HTML's table data and Create a new HTML page. The output of the javascript should also be put in a table format in the newly created HTML page. Here is some background information: The details from one server would be put into this first HTML along with a button. This HTML page is then mailed to Client side. The javascript in the HTML page then processes the Table data of first HTML. This can only be run at Client Side,once the user clicks the button and moreover I dont have Server-Client Configuration. I am creating a report and mailing it, For formatting purposes and for creating hyperlink to mailid's I chose HTML, Now I am struck here. Could some one please help me out with this. Thanks for your time. Hi everyone, I have been trawling for useful info for a few hours and still have no definitive answer. There is plenty of info about creating server side javascript which can use php/asp to pull in xml etc and process but there is nothing I could find identifying how to do the same thing but with the javascript being client side only, e.g chrome plugin code. From what I currently understand, javascript client side only cannot reach or ask for any services externally. Am I missing something obvious or just trying to do something impossible? Cheers , Aro |
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