|
JavaScript - 3 Ajax Calls From An 'each' Iterator & Not Working.. Why?
** sorry for posting this here. Kinda rushed on time, hoping for some clues.
Hello, I am using this code: using prototype too. Code: Code: var haveData = false;
[xmllink1, xmllink2, xmllink3].each(function(xmlURL){
if(haveData == false){
new Ajax.Request( xmlURL, {
method: 'get',
contentType: "application/xml",
onSuccess: function( transport ) {
var titles = transport.responseXML.getElementsByTagName( 'titles' );
DO SOME WORK HERE
haveData = true;
throw $break;
}
},
onFailu function() {
return;
},
onException: function(request,error) {
return;
}
}
What I am trying to do is if my first item "xmllink1" has some data, we break out and end it and now we can 'build some structures' ie.. onSuccess If xmllink1 doesn't have any valid data, we go to xmllink2 etc.. and so forth. Basically, when I get some valid returns.. I want to then exit out of the loop and then act on my data. But I need it in order so I know that my xmllink1 is not being in a race conditiona with xmllink2 etc.. But what is happening is I have simulataneous things going on and I get an onException (because one of the links doesn't resolve or has bad data) and that ends up killing my javascript. How can I test in order.. if link1 is good, great.. exit the "each method" and act on that data.. if xmllink1 is bad (onfairlure or onexception) lets go to xmllink2 etc.... any ideas? Similar TutorialsBelow I have a facebook login/logout script for my website. The login works fine. The AJAX requests the php file, waits for the "Success" response, and then reloads the page. The logout doesn't. Instead the browser goes to the PHP file with just the word "Success" printed on it. I've separated the xml request as a separate function but that doesn't appear to solve it either. Code: <script type="text/javascript">
//Ajax XML Loaders
var xmlhttp;
function loadXMLDoc(url,cfunc)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=cfunc;
xmlhttp.open("GET",url,true);
xmlhttp.send();
}
window.fbAsyncInit = function() {
FB.init({appId: '215993265079207', status: true, cookie: true, xfbml: true});
/* All the events registered */
FB.Event.subscribe('auth.login', function(response) {
// do something with response
login();
});
FB.Event.subscribe('auth.logout', function(response) {
// do something with response
logout();
});
FB.getLoginStatus(function(response) {
if (response.session) {
// logged in and connected user, someone you know
}
});
};
(function() {
var e = document.createElement('script');
e.type = 'text/javascript';
e.src = document.location.protocol +
'//connect.facebook.net/en_US/all.js';
e.async = true;
document.getElementById('fb-root').appendChild(e);
}());
function fbloginClick(){
FB.login(function(response) {
if (response.session) {
if (response.perms) {
// user is logged in and granted some permissions.
// perms is a comma separated list of granted permissions
} else {
// user is logged in, but did not grant any permissions
}
} else {
// user is not logged in
}
},
{perms:'email,user_birthday'}
);
}
function login(){
//Fire the PHP Facebook Auth Script
loadXMLDoc('facebook_auth.php',function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
if (xmlhttp.responseText == "Success"){
window.location = "template.php";
}else{
window.location = "login_failed.php";
}
}
});
}
function fblogoutClick(){
FB.logout(function(response) {
});
}
function logout(){
//Fire the PHP Logout Script
loadXMLDoc('logout.php',function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
if (xmlhttp.responseText == "Success"){
window.location = "template.php";
}else{
window.location = "login_failed.php";
}
}
});
}
</script>
I am trying to display some images in, say, 500ms intervals, but I want to loop through images, so I use a for loop and setTimeouts and function calls... Code: for (i=0;i<=5;i++)
{
setTimeout(DisplayTheImage, 500);
}
(a var that increments the image like image[x] is somewhere else) but I think all I accomplish is that while the above code calls the function 5 times alright, all five function calls occur simultaneously. Right? Eh, I want the function to be called 5 times, but at five different times, namely in 500ms intervals. I thought the function would wait to finish (500 ms) then another call and so on. How can I do that? I have a page that has a simple AJAX call that works fine in firefox and chrome but not in ie. In IE my loading image shows up but the actual sourceURL never loads or shows. Below is my html and javascript code. Can anyone help me with this? <div id="design_strap" style="display:none"> <a href="javascript:loadContent('#content', 'strap.html');">Link</a> <div id="content"></div> </div> <script type="text/javascript"> $.ajaxSetup ({ // Disable caching of AJAX responses cache: false }); function loadContent(elementSelector, sourceUrl) { $(""+elementSelector+"").html('<p><img src="images/loading.gif" width="150" height="150" /></p>'); $(""+elementSelector+"").load(""+sourceUrl+""); //$("content").height(350); } </script> i have made one page this is page link http://pickthefights.com/fantansy-fi...482&page=fight the code of this page is this <script type="text/javascript"> //////////////////////////////// // // Refreshing the DIV FANBOO2 // //////////////////////////////// function refreshdiv_fanboo2(){ // Customise those settings var seconds = 1; var divid = "fanboo2"; var url = "http://pickthefights.com/fanboo2/?id=<?php echo $idvar ?>"; // Create xmlHttp var xmlHttp_two = AJAX(); // No cache var timestamp = fetch_unix_timestamp(); var nocacheurl = url+"?t="+timestamp; // The code... xmlHttp_two.onreadystatechange=function(){ if(xmlHttp_two.readyState==4){ document.getElementById(divid).innerHTML=xmlHttp_two.responseText; setTimeout('refreshdiv_fanboo2()',seconds*1000); } } xmlHttp_two.open("GET",nocacheurl,true); xmlHttp_two.send(null); } // Start the refreshing process window.onload = function startrefresh(){ setTimeout('refreshdiv_fanboo2()',seconds*1000); } </script> <script type="text/javascript"> refreshdiv_fanboo2(); </script> <div name="fanboo2" id="fanboo2"></div> now what ever i put in fanboo2 page it works fine but javascript or jquery is not working here is code of fanboo2 page, you can check page here http://pickthefights.com/fanboo2/?id=482# here is it is working but not here http://pickthefights.com/fantansy-fi...482&page=fight </script> <script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"></script> <script src="http://bxslider.com/sites/default/files/jquery.bxSlider.min.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function(){ $('#slider1').bxSlider(); }); </script> <ul id="slider1"> <li>Slide one content</li> <li>Slide two content</li> <li>Slide three content</li> <li>And so on...</li> </ul> please help me out i want to make java script work on both of this page In IE online.php script was executed once, In Firefox didn't worked at all... Where is the problem? Here is my AJAX script: PHP Code: <script language="javascript" type="text/javascript"> <!-- // Get the HTTP Object function gethttpObject2(){ if (window.ActiveXObject) return new ActiveXObject("Microsoft.XMLHTTP"); else if (window.XMLHttpRequest) return new XMLHttpRequest(); else { alert("Your browser does not support AJAX."); return null; } } // Change the value of the outputText field function setOutput(){ if(httpObject2.readyState == 4){ document.getElementById('online').innerHTML = httpObject2.responseText; } } // Implement business logic function doWork(){ httpObject2 = gethttpObject2(); if (httpObject2 != null) { httpObject2.open("GET", "../content/tables/tb_online.php", true); httpObject2.send(null); httpObject2.onreadystatechange = setOutput; } } setInterval(doWork, 10); var httpObject2 = null; //--> </script> <div id='online' ></div> Code: function addEvent(elem,type,func) {
var obj = document.getElementById(elem);
if(window.addEventListener) {
obj.addEventListener(type,func,false);
}
if(window.attachEvent) {
obj.attachEvent('on'+type,func);
}
}
function $e(obj) {
if(obj) obj = document.getElementById(obj);
if(!obj) return;
return obj;
}
function homeFunc() {
$e('home-wrapper').innerHTML = "<div id=\"choose-container\"><span class=\"choose-buttons\" onclick=\"loginFunc()\">Login Exisiting Account</span><span class=\"choose-buttons\" id=\"createAcct\">Create An New Account</span><span class=\"choose-buttons-highscores\" id=\"createAcct\">Highscores Table</span>";
}
function loginFunc() {
$e('home-wrapper').innerHTML = "<div id=\"login-container\"><div id=\"error-field\"></div><form method=\"post\" onsubmit=\"return validate_login()\" action=\"./index.php\"><label for=\"username\">Username</label><input name=\"username\" id=\"username\" class=\"input\" type=\"text\" /> <label for=\"password\">Password</label><input name=\"password\" id=\"password\" class=\"input\" type=\"password\" /><input name=\"login\" type=\"submit\" value=\"Login\" class=\"loginButtonClass\" /><div id=\"loginQuickLinks\"><span class=\"loginQuickLinks\" onclick=\"homeFunc()\">Register</span> - <span class=\"loginQuickLinks\">Forgot password?</span></form></div></div>";
}
function createAcct() {
alert("Create An Account");
}
function validate_usr() {
var usr = $e('username');
var pwd = $e('password');
if(usr.value.length <= 0 && pwd.value.length <= 0) {
loginErrorMsg('Please supply a username and password.');
return false;
}
if(usr.value.length >= 1 && pwd.value.length <= 0) {
loginErrorMsg('Please supply a password.');
return false;
}
if(pwd.value.length >= 5 && usr.value.length <= 0) {
loginErrorMsg('Please supply a username.');
return false;
}
if(pwd.value.length < 5) {
loginErrorMsg('Invalid username or password.');
return false;
}
if(usr.value.length >= 1 && pwd.value.length >= 5) {
$e('error-field').style.cssText='display:block;';
$e('error-field').innerHTML = "<img src=\"/images/ajax-loader.gif\" /> <span style=\"color:#ffffff\">Loading...</span>";
var req;
var params = 'user='+encodeURIComponent(usr.value.toLowerCase())+'&pass='+encodeURIComponent(pwd.value.toLowerCase());
if(window.XMLHttpRequest) {
req = new XMLHttpRequest();
}
if(window.ActiveXObject) {
req = new ActiveXObject("Msxml2.XMLHTTP" || "Microsoft.XMLHTTP");
}
req.open('POST','server/userChck.php',true);
req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
req.send(params);
req.onreadystatechange = req;
if(req.readyState == 4 && req.status == 200) {
if(req.responseText == 0) {
window.scrollTo(0,1);
setTimeout(function(){loginErrorMsg('Invalid username or password');},1000);
return false;
}
}
}
return true;
}
function loginErrorMsg(msg) {
window.scrollTo(0,1);
$e('error-field').innerHTML = msg;
$e('error-field').style.cssText='display:block';
}
function validate_login() {
var isTurn = (!validate_usr()) ? false : true;
return isTurn;
}
window.onload = function() {
setTimeout(function(){window.scrollTo(0,1);},100);
addEvent('loginButton','click',loginFunc);
addEvent('createAcct','click',homeFunc);
}
This code works fine when I set this line to false Code: req.open('POST','server/userChck.php',false);
but as soon as I set this to true. I doesn't work.... What am I doing wrong here? Hi, I'm trying to work through a head first book on ajax and javascript. I am also trying to emplement some of the codes in a small application I had built strictly with server side code. What it does is: two input fields for user defined values. Once the user inputs the two values, they are passed to the action page, some simple math is performed on these 2 values, and then 4 different resluts are displayed back on the action page. What I wanted was of course to make this asynchronous and display the results without a page reload. So, when I reworked the book code for my own use, and try to run the application, I get an error saying my url variable is undefined. The value of the first input seems to be passed though. One thing of note to mention is the application was written in coldfusion. The form values are passed using cf. Not sure if that matters. I mean cf works well with js and ajax, but maybe my original procedure doesnt work with my js code as it is now. Here is the javascript/ajax code: PHP Code: <script type="text/javascript" language="javascript"> var request = null; try { request = new XMLHttpRequest(); } catch (trymicrosoft) { try { request = new ActiveXObject("Msxm12.XMLHTTP"); } catch (othermicrosoft) { try { request = new ActiveXObject("Microsoft.XMLHTTP"); } catch (failed) { request = null; } } if(request == null) alert("Error creating request object!"); } function getLampVolts() { var lamp = document.getElementById("lampVoltage").value; var url = "calculatorAction.cfm?lamp = " + escape(lampVolts); request.open("GET", url, true); request.onreadystatechange = updatePage; request.send(null); } function updatePage() { if(request.readyState == 4) { if(request.status == 200) { var lumens = request.responseText; document.getElementById("lumens").value = lumens; } else alert("Error! Request Status is " + request.status); } } </script> Here is the form: Code: <form action="calculatorAction.cfm">
<table>
<tr>
<th>Lamp Voltage</th>
<td><input name="lampVoltage" id="lampVoltage" type="text" /></td>
</tr>
<tr>
<th>Socket Voltage</th>
<td><input name="socketVoltage" id="socketVoltage" type="text" /></td>
</tr>
<tr>
<td><input type="button" value="Submit" onClick="getLampVolts();" /></td>
<td><input type="reset" value="Reset" /></td>
</tr>
</table>
and here is my action page calculatorAction.cfm: Code: <cfparam name="bulbCalculator.cfm" type="any" default="0">
<!--- Set User Defined Values of Form --->
<cfset lampVolts = FORM.lampVoltage>
<cfset actualVolts = FORM.socketVoltage>
<!--- Set Constants For Calculations --->
<cfset lumens = 27500>
<cfset life = 500>
<cfset watts = 65>
<cfset colorTemp = 3500>
<!--- Perform Calculations --->
<cfset actualLumens = ((actualVolts/lampVolts)^3.4)*lumens>
<cfset lumenPercent = actualLumens/lumens*100>
<cfset hours = ((lampVolts/actualVolts)^13)*life>
<cfset hourPercent = hours/life*100>
<cfset actualWatts = ((actualVolts/lampVolts)^1.3)*watts>
<cfset wattPercent = actualWatts/watts*100>
<cfset temperature = ((actualVolts/lampVolts)^.42)*colorTemp>
<cfset tempReduction = temperature-colorTemp>
<!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>Untitled Document</title>
</head>
<body>
<cfsavecontent variable="calculations">
<table>
<cfoutput>
<tr>
<td>Lamp Rated Voltage:</td>
<td>#lampVolts#</td>
</tr>
<tr>
<td>Socket Application Voltage:</td>
<td>#actualVolts#</td>
</tr>
<tr>
<td id="lumens">Percent of Lumens Used:</td>
<td>#round(lumenPercent)#%</td>
</tr>
<tr>
<td>New Rated life in Percentages:</td>
<td>#round(hourPercent)#%</td>
</tr>
<tr>
<td>Percent of Watts Used:</td>
<td>#round(wattPercent)#%</td>
</tr>
<tr>
<td>Change in Temperatu </td>
<td>#round(tempReduction)#°</td>
</tr>
</cfoutput>
</table></cfsavecontent>
</body>
</html>
Again, the url variable says it is undefined. But the variable "lamp" contains the form field value. Thanks for any help and tips in advance! Hi. Just started fooling around with Ajax a bit back. So far, it's been fine. Today, though, I'm hitting some error I can't figure out. It *should* work, but it doesn't, and I have no idea why. Simple HTML form page with a bit of css. No big deal. Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type="text/javascript" src="livesearch.js"></script>
<style type="text/css">
#livesearch
{
margin:0px;
width:194px;
}
#txt1
{
margin:0px;
}
</style>
</head>
<body>
<form>
<input type="text" id="txt1" size="30" onkeyup="showResult(this.value)" />
<div id="livesearch"></div>
</form>type
</body>
</html>
Problem area below in bold. Code: function showResult(str){
if (str.length == 0)
{
document.getElementById("livesearch").innerHTML = "";
document.getElementById("livesearch").style.border = "0px";
}
var xmlhttp = getXMLHttpObject();
if (xmlhttp == null){
alert("Your browser does not support XML HTTP requests!");
return;
}
var url = "livesearch.php";
url = url + "?q=" + str;
url = url + "&sid="+Math.random();
xmlhttp.onreadystatechange=stateChanged ;
xmlhttp.open("GET", url, true);
xmlhttp.send(null);
}
function stateChanged(){
if (xmlhttp.readyState == 4){
alert("Never seems to hit a readystate==4");
document.getElementById("livesearch").innerhtml = xmlhttp.responseText;
document.getElementById("livesearch").style.border="1px solid #A5ACB2";
}
}
function getXMLHttpObject(){
//Current browsers
if (window.XMLHttpRequest){
return new XMLHttpRequest();
}
//For IE 5/6
if(window.ActiveXObject){
return new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
return null;
}
}
My PHP file is just a simple echo statement to see that it works to that point. It doesn't. For whatever reason, it never seems to hit readyState ==4. It enters the function (I've checked with alerts), but the if statement never comes out to be true. I have no idea why. I've combed over the code for errors for a while now and I can't find anything. Any ideas? Would be much obliged. Could somebody help me please to explain what I'm doing wrong.... a have this html file with references to some javascripts (datagrid from http://www.datatables.net) and this html file work ok..I mean javascripts a css styling works with table... but when I call this page by ajax and callback (this html page) is forward back into another div , table doesn't work ....just data from page but now functionality from javascript and css styling... how should I force callback result to use javascript and css? Code: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html><head>
<meta http-equiv="Content-type" content="text/html; charset=UTF-8">
<link rel="shortcut icon" type="image/ico" href="http://www.datatables.net/media/images/favicon.ico">
<link rel="alternate" type="application/rss+xml" title="RSS 2.0" href="http://www.datatables.net/rss.xml">
<style type="text/css" media="screen">
@import "media/css/demo_page.css";
@import "media/css/demo_table.css";
@import "http://www.datatables.net/media/css/site_jui.ccss";
@import "media/css/demo_table_jui.css";
@import "media/css/themes/base/jquery-ui.css";
@import "media/css/themes/smoothness/jquery-ui-1.7.2.custom.css";
/*
* Override styles needed due to the mix of three different CSS sources! For proper examples
* please see the themes example in the 'Examples' section of this site
*/
.dataTables_info { padding-top: 0; }
.dataTables_paginate { padding-top: 0; }
.css_right { float: right; }
#example_wrapper .fg-toolbar { font-size: 0.8em }
#theme_links span { float: left; padding: 2px 10px; }
</style>
<script type="text/javascript" src="media/js/complete.js"></script>
<script src="media/js/jquery-1.4.4.min.js" type="text/javascript"></script>
<script src="media/js/jquery.dataTables.min.js" type="text/javascript"></script>
<script type="text/javascript" src="media/js/jquery.dataTables.editable.js"></script>
<script src="media/js/jquery.jeditable.js" type="text/javascript"></script>
<script src="media/js/jquery-ui.js" type="text/javascript"></script>
<script src="media/js/jquery.validate.js" type="text/javascript"></script>
<script type="text/javascript" charset="utf-8">
$(document).ready( function () {
$('#example').dataTable().makeEditable({
sUpdateURL: "update.php",
sDeleteURL: "delete.php"
});
} );
</script>
</head>
<body id="index" class="grid_2_3">
<table cellpadding="0" cellspacing="0" border="0" class="display" id="example">
<thead>
<tr>
<th>
ID</th>
<th>
user</th>
<th>
password</th>
<th>
first</th>
<th>
last</th>
<th>
company</th>
</tr>
</thead>
<tbody>
<tr class="even_gradeA" id="1">
<td>
1
</td>
<td>
XY
</td>
<td>
passwoed
</td>
<td>
Ja
</td>
<td>
jajovic
</td>
<td>
2
</td>
</tr>
<tr class="even_gradeA" id="2">
<td>
2
</td>
<td>
jojo
</td>
<td>
fa25af5301e2dda1fddea740200aa10ab6c70d86
</td>
<td>
jojo
</td>
<td>
jojovicko
</td>
<td>
2
</td>
</tr>
<tr class="even_gradeA" id="3">
<td>
3
</td>
<td>
kuk
</td>
<td>
d588aebb93e3adf70eac1fb479d6d53f9dc21816
</td>
<td>
kuk
</td>
<td>
kukovic
</td>
<td>
3
</td>
</tr>
<tr class="even_gradeA" id="10">
<td>
10
</td>
<td>
admin
</td>
<td>
f865b53623b121fd34ee5426c792e5c33af8c227
</td>
<td>
admin
</td>
<td>
adminovic
</td>
<td>
3
</td>
</tr>
</tbody>
</table><button id="btnDeleteRow">Delete</button>
</body>
</html>
Can somebody help me to find the problem with the below given code, its not working. $(document).on('keyup', ".add_commi", function() { typingTimer = setTimeout(doneTyping, doneTypingInterval); var pro = $(this).attr('id'); var selectvalue = $(this).html(); var id = pro.slice(-2); var amount = $('#amount'+id).html(); var rate = $('#v_rate'+id).html(); //alert('working'); var data = 'cur_amount='+cur_amount +'&cur_rate='+cur_rate+'&commision='+selectvalue; $.ajax({ type: "POST", dataType: "json", url: "http://localhost/agent/buy-currency-calculations/", data: data, success: function(output){ var cus_rate = output.cus_rate; var total = output.total; var tot_commision = output.commision; alert(cus_rate, total, tot_commision); $('#curr_rate'+id).html(cus_rate); $('#tot'+id).html(total); $('#tot_commi'+id).html(tot_commision); } }); return false; }); Reply With Quote 01-09-2015, 02:53 PM #2 Dormilich View Profile View Forum Posts Senior Coder Join Date Jan 2010 Location Behind the Wall Posts 3,532 Thanks 13 Thanked 372 Times in 368 Posts cur_amount, cur_rate and selectvalue are supposedly primitive values (like numbers) but you fetch them as HTML code which the interpreting server script certainly can’t process. (if it should be indeed primitives, you should rather consider using form elements for that). despite that jQuery has a method to fetch values off a form, which might be easier to implement, but that depends on the used HTML code. additionally, in your browser’s dev tools you can check the network pane for what values are sent/received in the AJAX call. hi, When I navigate to a page with Ajax on my iphone or ipad, it doesn't show up, page is just blank, I have checked for errors and there is no errors?! here is my Ajax code Code: function datecheckFunction(){
var datecheckRequest; // The variable that makes Ajax possible!
try{
// Opera 8.0+, Firefox, Safari
datecheckRequest = new XMLHttpRequest();
} catch (e){
// Internet Explorer Browsers
try{
datecheckRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try{
datecheckRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e){
// Something went wrong
alert("Your browser broke!");
return false;
}
}
}
// Create a function that will receive data sent from the server
datecheckRequest.onreadystatechange = function(){
if(datecheckRequest.readyState == 4){
var ajaxDisplay = document.getElementById('ajaxDiv');
ajaxDisplay.innerHTML = datecheckRequest.responseText;
}
}
var datepicker = document.getElementById('datepicker').value;
var queryString = "?datepicker=" + datepicker;
//Add the following line
datecheckRequest.open("GET", "http://www.affordableappliancerepairs.co.uk/admin/checkdate.php" + queryString, true);
datecheckRequest.send(null);
}
It works in Google Chrome but not Firefox and Internet Explorer. My computer has blocked Opera and I don't know how to change that. Too much energy to investigate now, I'll do so later. Are there any pros that can tell me why this is happening? I'm assuming GoogleChrome is fixing a syntax error that FF and IE don't. Code: var request;
request=false;
try {
request = new XMLHttpRequest();
} catch (trymicrosoft) {
try {
request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (othermicrosoft) {
try {
request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (failed) {
request = false;
}
}
}
function isAlNum(str){
return /^[a-z0-9]+$/i.test(str);
}
var preUsername;
var same;
function updatePage() {
if (username.value.length>0){
if ( request.responseText.indexOf("0") == -1 )
{userNameErrorBox.innerHTML=username.value + " has already been taken";
usernameSuccessBox.innerHTML="";}
else
{userNameErrorBox.innerHTML="";
usernameSuccessBox.innerHTML=username.value + " is available";}}
}
function nameTest()
{
if (username.value==preUsername)
{same=1;}
else
{same=0;}
if (!isAlNum(username.value))
{if (username.value.length>0)
{username.value=preUsername;}}
else
{preUsername=username.value;}
if (username.value.length>0 && username.focus && same===0)
{
userNameErrorBox.innerHTML="";usernameSuccessBox.innerHTML="";
request.abort();
var url = "/unseen/checkIfUserNameExist.php?name=" + username.value;
request.open("GET", url, true);
request.onreadystatechange = updatePage;
request.send(null);
}
if (username.value.length===0)
{ userNameErrorBox.innerHTML="";usernameSuccessBox.innerHTML="";preUsername=""; }
}
I back tracked what i did and it appears that this code Code: var url = "/unseen/checkIfUserNameExist.php?name=" + username.value;
request.open("GET", url, true);
request.onreadystatechange = updatePage;
request.send(null);
has the problem. When I set up alerts to see what works and what doesn't, this code seems to be causing the FF and IE to not work, but I can't tell what it is that's causing them to fail. This is javascript that is suppose to check if a name has been taken by another user. I'm working on a fairly large project that I wish to be the new formspring, (size wise) I procrastinated for 2 weeks of my 12 week break and now that I'm just getting started on it I'm running into an ishness load of problems... Very de-motivating here is my issue... i have an object and i need to call two functions. i need the onclick="something" to call a server side function and then i need another onclick="something" to call a javascript funtion... the problem is you can only have one "onclick" (similar to having one "class")... how can I set up an onclick that will call both my serverside function and my javascript function... I realize this is not specifically serverside section of forum, so pretend I am asking how to call two separate javascript functions with different names the item in question is here Code: <asp:Button ID="btn_gen1" runat="server" Text="InterventionCentral" class="show"
onclick="btn_gen1_Click" onclick="autohide" onmouseover="details_visible(1)" onmouseout="details_hidden(1)" />
just showing this to clarify that javascript does work with the asp and my mouse functions are working fine... my asp onclick works as well.. i can remove the asp and leave the js and it will work, but then all the stuff i do server side for the onclick goes away is this able to be done? this is for dev testing and i will eventually run into the same problem of needing to call two separate javascipt functions via onmouseover and also onmouseout This is the first function. Code: <html>
<head>
</head>
<body>
<script language="javascript" type="text/javascript">
function getthat****(){
num_a=Number(document.addition.entry_1.value);
num_b=Number(document.addition.entry_2.value);
num_c=Number(document.addition.entry_3.value);
num_d=Number(document.addition.entry_4.value);
num_e=Number(document.addition.entry_5.value);
valNum1=num_a*num_c
valNum2=num_a*num_d
valNum3=num_b*num_c
valNum4=num_b*num_d
valNum5=valNum1-valNum4
valNum6=valNum2+valNum3
valNum7=num_e/Math.sqrt(3)
valNum8=valNum7+valNum1-valNum4
document.addition.endVal1.value=valNum8;
document.addition.endVal2.value=valNum6;
}
</script>
<form name="addition">
<br>
impedance (rectangular)
<input type="text" name="entry_1"> + j
<input type="text" name="entry_2"> ohms
<br>
<br>
line current (rectangular)
<input type="text" name="entry_3"> + j
<input type="text" name="entry_4"> amperes<br><br>
<br>
<br>
line value of receiving voltage
<input type="text" name="entry_5"> volts (angle is zero degrees) (reference)
<br>
<br>
(<input type="text" name="endVal1"> + j
<input type="text" name="endVal2">) Volts
<br>
<input type="button" value="Product" onclick="getthat****()">
<input type="reset" value="Clear">
</form>
</body>
</html>
And this is the second one. Code: <html>
<head>
</head>
<body>
<script language="javascript" type="text/javascript">
function PolarConvert(){
num_1=Number(document.addition.entry_1.value);
num_2=Number(document.addition.entry_2.value);
valNum1=Math.pow(num_1,2);
valNum2=Math.pow(num_2,2);
valNum3=Math.sqrt(valNum1 + valNum2);
valNum4=Math.atan(num_2/num_1);
valNum5=(valNum4*180)/Math.PI;
document.addition.endVal.value=valNum3;
document.addition.endVal2.value=valNum5;
}
</script>
<form name="addition">
<input type="text" name="entry_1">+ j
<input type="text" name="entry_2"> =
<input type="text" name="endVal"> angle
<input type="text" name="endVal2"><br>
<input type="button" value="Convert to polar" onclick="PolarConvert()">
<input type="reset" value="Clear">
</form>
</body>
</html>
The question is how do I combine these given that the value that would be computed in function 2 is already computed in function 1 ? Thanks a lot !!! Is it possible to capture function calls? for example: alert('hello world'); is there a way to capture this function call. Why do i want to do this: 1. i need a way to test if a function exist before it is called, so i dont get undefined errors etc. 2. try/catch only works on sections of code, i need a global solutions.(can i capture functions calls on remotely loaded scripts, like google analytics etc ) Hi, I have a search function which works when I only want to have only one search per page, but as it involves a string call I'm not sure how to modify it to multiple search requests on a page. The below works fine for one call: Code: <script type="text/javascript">
function showHint(str){
if (str.length==0){
document.getElementById("txtHint").innerHTML="";
return;
}
if (window.XMLHttpRequest){
xmlhttp=new XMLHttpRequest();
}
else{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200){
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","getName.php?q="+str,true);
xmlhttp.send();
}
</script>
</head>
<body>
<label>Search by name: </label>
<input type="text" id="txt1" class="input" onkeyup="showHint(this.value)" />
<br />
<p>Suggestions: <span id="txtHint"></span></p>
<br />
But if I want to do mulitple I have tried changing it to: Code: <script type="text/javascript">
function showHint(File,ID){
if (str.length==0){
document.getElementById(ID).innerHTML="";
return;
}
if (window.XMLHttpRequest){
xmlhttp=new XMLHttpRequest();
}
else{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200){
document.getElementById(ID).innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET",File,true);
xmlhttp.send();
}
</script>
</head>
<body>
<label>Search by firstname: </label>
<input type="text" id="txt1" class="input" onkeyup="showHint('GetFirstName.php?q='+str,'txtHint')" />
<br />
<p>Suggestions: <span id="txtHint"></span></p>
<br /> <label>Search by surname: </label>
<input type="text" id="txt1" class="input" onkeyup="showHint('getLastName.php?q='+str,'txtHintSn')" />
<br />
<p>Suggestions: <span id="txtHintSn"></span></p>
<br />
The above doesn't work and I am not sure what do about the showHint(str) as clearly I am not representing it properly in my attempt to modify the script. I want to have a button in a form that only calls a Javascript function, but not refresh the page, how do I do this?
Hi, I've been playing around trying to recreate the way in which jQuery chains it's functions for it's "select" then "do" behaviour. Note: I don't want to chain functions with jQuery, I want to chain them like jQuery. So based on the jQuery code what I have so far is (doesn't work in IE): Code: var x = function(string) {
return new x.fn.init(string);
};
x.fn = x.prototype = {
message: '',
init: function(string) {
x.fn.message = string;
},
log: function() {
console.log(x.fn.message);
}
};
x.fn.init.prototype = x.fn;
var start = function() {
x('hello world').log();
};
document.addEventListener('DOMContentLoaded', start, false);
The code works but when I watch '$' in jQuery "fn" & "prototype" show up as being "jQuery()" but in my code when I watch "x": "fn" and "prototype" are both shown as objects containing "message", "init" and "log" and in both cases "init" contains "prototype" which contains my three functions again and the nesting continues seemingly infinitely... I'm clearly missing something here. What are they doing in differently in jQuery to prevent this endless nesting loop? Hi all, I would like to have an HTML button which, when clicked by the user, contacts the server and runs a Python script on the server. When the Python script finishes running, the current HTML page automatically reloads a file from the server. Is that possible? YJ I have the following javascript function: [ function addNewWindowEvent(evType, fn) { if (window.addEventListener) { this.addEventListener("load", fn, false); return true; } else if (window.attachEvent) { var onload = "onload" this.attachEvent(onload, fn); return true; } else { return false; } } ] which is giving me a an exception every time a page on our site loads. The actual exception in firefox is this: uncaught exception: [Exception... "Could not convert JavaScript argument" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)" location: "JS frame :: https://cms-dev.stchas.edu/global/js/hdvscripts.js :: addNewWindowEvent :: line 5" data: no] and I'm not sure exactly what it's complaining about. I'm relatively new to javascript so diagnosing and fixing this problem has me quite puzzled, and so far I have been unable to find anything helpful when I try and google for information on this. I would appreciate any help or suggestions. Thanks. henryv |
|||||||