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JavaScript - Index Of Hard Return Struggles
So I am working on a function that counts the number of lines a user input takes up. I'm accounting for a line being 114 characters long, and I am trying to account for returns which in some cases are used for a blank line, and in others simply to proceed to a new line for new text. But thats not important really. I am having problems identifying the returns from my form submit. The code below isnt identifying them, I get that. But when I google this issue, it tells me to do something like
hard = biotext.indexOf("\r"); Instead of the <br /> which I also understand. Unfortunately, as soon as I do that, my javascript completely breaks and stops working, as though I had a major syntax error. I dont understand as this syntax is suggested in many sites on the net. Code: function count_bio(ctl, ev)
{
var biotext = ctl.value;
var counter = 0;
hard = biotext.indexOf("<br />");
hardx = hard;
while(hard > 0)
{
hard=hardx-y;
if(hard > 114){counter+=Math.ceil(hard/114);}
else{counter+=1;}
y=hardx;
hardx=biotext.indexOf("<br />", hardx+1);
}
if(counter==0)
{
counter=Math.ceil(biotext.length / 114);
}
else
{
if(hardx > 114){counter+=Math.ceil(hardx/114);}
else{counter+=1;}
}
alert(counter);
return true;
}
Similar TutorialsI don't understand the logic of Break, Return False, Return True. It was never really covered in our college class, and I see everyone using it. I got an A in the class, if that 'proves' that I really tried to apply myself. NOTE: I understand what the function is doing. I just don't understand WHEN to use break, return false or return true if the the translator can determine the conditional statements. PHP Code: function submitForm(){ var ageSelected = false; for (var i=0; i<5; ++1){ if (document.forms[0].ageGroup[i].checked == true) { ageSelected = true; break; } } if (ageSelected == false){ window.alert("You must select your age group"); return false; } else return false; } if the the translator can determine the conditional statements, why not write it like this: PHP Code: function submitForm(){ var ageSelected = false; for (var i=0; i<5; ++1){ if (document.forms[0].ageGroup[i].checked == true) { ageSelected = true; break; // what's the point for the 'break'? Won't the rest of the code be ignored since it passed the first condition? } } if (ageSelected == false){ window.alert("You must select your age group"); return false; } // why not leave the last else out? is it just a 'safety' catch, in case something other than true or false is inputted? else return false; // what's the point? } Questions: Why use return true, if the translator knows it's ture? Why use "return false" if the translator knows it's false and the alert window has already gone up? why not use "break" to stop the code? Why use the "return false" at the end "else" statement? Hi room, Hey, I opened up the source code for this page in google chrome and since i'm learning javascript, i wanted see if i could "read" it and figure out what was going on. I'm am having the hardest time understanding "return false" and "return true". Could someone step me through this via interpreting this code (in bold typeface): Code: var DefaultValue = 'Search';
function clearSearch() {
if (document.searchForm.q.value == DefaultValue) {
document.searchForm.q.value = '';
}
}
function validateSearchHeader() {
if ( document.searchForm.q.value == '' || document.searchForm.q.value.toLocaleLowerCase() == DefaultValue.toLocaleLowerCase() ) {
alert('Please enter at least one keyword in the Search box.');
document.searchForm.q.focus();
return false;
}
return true;
}
Thanks! Hello, How hard is it to make a "mixer" like this one here? http://mixville.ru/choco/create Having only html and css knowledge and minimal javascript(learning it, very interesting language) I can suppose it's like a table filled with buttons which once clicked move to another table on the left side? Which is made like an array or something. Im a newbye i know. Hope you can guide me in the right direction or atleast tell me the subjects that I need to learn to make this myself. P.S. this is in no way a commercial or spam since the website is russian I have been on loads of websites, and they all say the same thing. But the below script will just not change the opacity of the element - which is a DIV - in IE... I do not see why not, W3C says that obj.filters.alpha.opacity = 50; will do it, but it produces an error saying that filers.alpha is null or not defined... Code: function setOpacity(obj) {
obj.style.opacity = "0.5";
obj.filters.alpha.opacity = 50;
obj.style.filter = 'alpha(opacity=50)';
}
Okey so im making gladiatus project coping 'www.gladiatus.com' yet i maked a lot fixes and not bad progress, but still it needs a lot of work. Still i got a problem don't really know how to get working, make the items on server whit stats, and how to make inventory and account equi to work, for now they are only images it's hard to explain, so i show you some images... ;] from original gladiatus image account.php file: "http://img715.imageshack.us/f/logorkv.jpg/" on my server there are only img of inventory, character, wearing img there isn't items or stats on items, so im asking some help, and i don't even know if here to search, somebody can make some scripts don't really care if it's not full script i finish them myself so i need a script when char reach (10;15;20;25 levels) char avatar whill change, I got all images... items on server reading from db stats, wearing img can move items on it and give stats,and moving from mini inventory somewhere... i know it's really hard funkcions but still i don't got so big brain to make the scripts... Need help maybe somebody can help me... sorry if somethings wrong im new here. :P Hello All, I'm about to pull my hair out dealing with this pixel. This is the information CJ has given me. The OID (order ID) is a unique alphanumeric ID that needs to be generated on your end, and will be assigned to each unique transaction that occurs. If the OID is not unique, meaning if our system detects a duplicate OID for another transaction, the second transaction will be ignored, which is why it is important that unique OIDs are generated for each transaction (in your case, for each lead form that is completed and submitted) and What I would suggest doing for your OID, is hardcoding a time and date stamp into the pixel to act as the OID. When you do this, you must exclude any symbols (colons, slashes, periods, etc) from the time/date stamp, and have the time be recorded all the way down to the millisecond. Since it will be extremely rare (if it happens at all) that two transactions will occur within the same millisecond, it will create a unique number to act as the OID for each lead that is submitted. I have no idea what this means or how to do it. Here's an example of a pixel. http://cj.com/u?CID=1520654&OID=Invo...TYPE=344815&IT EM1=lead&AMT1=0&QTY1=1&CURRENCY=USD& METHOD=IMG" height="1" width="20"> Someone please help, I am at my wits end. Hello, I'm taking Computer Logic in college. I only am truly familiar with HTML and CSS and minimal web hosting stuff. I REALLY want to learn how to program, however. Anyway, we are doing classes/objects and functions. I am trying to figure out how to do this exercise. She starts with having us make this page that has a form that lets you select one of three radio buttons that will change the background color of the web page, along with that there is two text boxes to put a first name and last name. Then there is a button to click which puts your full name concatenated in another box below. All of this, is done, and I pretty much THINK I understand what is going on. Here is the code that we did to get this to happen: Code: <html>
<head>
<title>Computer Logic in class</title>
<script type="text/javascript">
var nextColor = "";
var BR = "<br />";
function setColor(newColor)
{
nextColor = newColor;
}
function changeColor()
{
document.body.bgColor = nextColor;
}
function displayName()
{
var firstName = document.ColorAndText.firstName.value;
var lastName = document.ColorAndText.lastName.value;
document.ColorAndText.fullName.value = firstName + " " + lastName;
}
</script>
</head>
<body bgcolor="red">
<form name="ColorAndText" action = "">
<input type="radio" name="colors" value="Blue" onclick="setColor(this.value)"/> Blue <br />
<input type="radio" name="colors" value="LightYellow" onclick="setColor(this.value)"/> Light Yellow <br />
<input type="radio" name="colors" value="Yellow" onclick="setColor(this.value)"/> Yellow <br />
<input type="button" name="changeButton" value="changeColor" onclick="changeColor()" /> <br />
<input type="text" name="firstName" value="First Name" size="40" /><br />
<input type="text" name="lastName" value="Last Name" size="40" /><br />
<input type="text" name="fullName" readonly="true" size="40" /><br />
<input type="button" name="displayButton" value="Display name" onclick="displayName()" /> <br />
</form>
</body>
</html>
Okay, now, I have and can do that. Seems to make sense. Now, then, the actual program I need to make is from the following exercises: Activity 3-4 The owner of a flower shop wants you to develop a form for use on the shop's web site. The form should have a single text box for the user to enter his or her name. Under the text box should be a group of radio buttons for three different kinds of flowers: Roses, Carnations, and Daisies. Below the radio buttons should be a button labeled Request Info, with a read-only text box under it for thanking the user for requesting information. This program doesn't need any functions or onclick attributes for the graphical elements. Okay, here is the code that does that, very simple HTML. Code: <html>
<head>
<title>Computer Logic in class</title>
<script type="text/javascript">
var nextFlower = "";
var BR = "<br />";
function setFlower(newFlower)
{
nextFlower = newFlower;
}
function displayMessage()
{
var firstName = document.Flowers.nameBox.value;
document.Flowers.fullName.value = firstName + "," + nextFlower;
}
</script>
</head>
<body bgcolor="white">
<form name="Flowers" action = "">
<input type="text" name="nameBox" value="Namebox" size="60"><br />
<input type="radio" name="flowers" value="Roses" onclick="setFlower(this.value)"/> Roses <br />
<input type="radio" name="flowers" value="Carnations" onclick="setFlower(this.value)"/> Carnations <br />
<input type="radio" name="flowers" value="Daisies" onclick="setFlower(this.value)"/> Daisies <br />
<input type="button" name="displayButton" value="Request Info" onclick="displayMessage(this.value)" /> <br /><br />
<input type="text" name="thankyou" readonly="true" size="100" value="Thanks for using this program" />
</form>
</body>
</html>
Okay, now is where I'm stuck. The following exercise is as follows: The flower shop owner in the previous activity wants to see where you can make the form interactive and asks you to have the form display a message in the bottom text box that includes the user's name, a comma, and the words "thank you for your inquiry about" followed by the flower name the user selected. Write a function named displayMessage() that accesses the user's name from the first text box and displays the message in the read-only text box. You also need to make the Request Info button call the displayMessage() function when it's clicked. Using Javascript, make this form active by including event triggers and functions. My teacher has said that I should be able to do this by just referencing these two previous pages of code that I have already pasted. I feel like I am missing something, that I need to be doing something and it's just not working for me. I'm actually really really stuck on this. I haven't even gotten to the second half of the exercise (where I have to have it display about what flower you select) because I cant get this function to work. What am I missing? Also, the exercise we did before these two had us make a very basic account class and object. We don't have to do that at all in this anywhere, but I do know how to do it, in case I need to make a class or something. ANY AND ALL HELP GREATLY APPRECIATED!!! I just don't know what I'm supposed to do, I can't get it to work. Short version at bottom Need to add an array before an array to init thousands of arrays. Mostly worked out, just need to add an array before an array. ........Please check it out. Really want to finish this tonight or tomorrow. Alright, so two days later I finally have this portion working but its only because of the awesome people of this forum and unforunately these people thought I had some half decent grasp of javascript (which I don't) and so their answers were meant to solve my problem but each time I was left with no idea how to repeat what they did. So, I've learned a lot of extra stuff that I really could have done without in the effort to try and understand what they did. This is all well and good because I'm much farther than I am had I gone it alone (so thank you!) but please, anyone that posts an answer, could you try and explain a bit of how I might use your solution again. For example, today I was confused for about an hour because I didn't understand how [CODE]var newArray=[], a, i=0;CODE] worked but only after staring at it long enough and not finding anything on google related to "values inputed after array initialization" did I finally realized that these were not params of a new array but just new variables. Code:
var alphabetArray =['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7','8','9','all1'];
var a;
var i=0;
while(a=alphabetArray[i++]){
eval('var _img_'+a+' = []');
eval('var _h_'+a+' = []');
eval('var _r_'+a+' = []');
eval('var _m_'+a+' = []');
eval('var _yt_'+a+' = []');
}
alert(_h_all1)
and its working perfectly but I somehow I need to add Code: var pageNum = ['','p2_','p3_','p4_','p5_','p6_','p7_','p8_','p9_','p10_'] need to add pageNum to every alphabetArray so... _img_a = [],_img_p2_a = [], img_p3_a = [].... _img_p10_a = [] repeated for every variable in alphabetArray. _yt_p10_all1=[] Super short version Code: var alphabetArray =[letters/numbers];
var a;
var i=0;
while(a=alphabetArray[i++]){
eval('var _img_'+a+' = []');
}
// works now I need to add 10 page prefixes before each var in alphabetArray
Code: var pageNum = ['','p2_','p3_','p4_','p5_','p6_','p7_','p8_','p9_','p10_'] need to add pageNum to every alphabetArray so... _img_a = [],_img_p2_a = [], img_p3_a = [].... _img_p10_a = [] repeated for every variable in alphabetArray. _yt_p10_all1=[] Please explain how this might be possible in a way that your dog might understand. i'm trying to get some information with this code from my database: Code: function getTableSize(tableName){
db.transaction
(
function(tx)
{
tx.executeSql
('SELECT * FROM '+ tableName,[] , function(tx, r)
{
return r.rows.length;
}
);
}
);
}
but it doesnt work and i cant figure why what i want is that this function return the table size to one variable in another function...something like: Code: var groupTableSize = getTableSize('groups');
i have this in my javascript code but have no idea on how a returned value works/where does it return to???? what do i do/or can i do with a value that gets returned??? i am asking this so i can learn on how to use it cos i am new to all this and dont know how it works...please show/explain to me please? thanks here my full code: PHP Code: <?php use_stylesheets_for_form($form) ?> <?php use_javascripts_for_form($form) ?> <html> <head> <script type="text/JavaScript"> function refreshPage(s) { window.location.reload(); if((s.options[s.selectedIndex].value) = "zed-catcher") { var $index = s.selectedIndex; var $value = s.options[$index].value; alert (s.selectedIndex); alert ($value); window.location.reload(); [COLOR="Red"]return &value; //where does it return to ???? how/what to do with a return value???[/COLOR] } } </script> </head> </html> <body> <form action="<?php echo url_for('adminservice/'.($form->getObject()->isNew() ? 'create' : 'update').(!$form->getObject()->isNew() ? '?id='.$form->getObject()->getId() : '')) ?>" method="post" <?php $form->isMultipart() and print 'enctype="multipart/form-data" '?>> <?php if (!$form->getObject()->isNew()): ?> <input type="hidden" name="sf_method" value="put" /> <?php endif; ?> <table > <tfoot> <tr> <td colspan="2"> <?php echo $form->renderHiddenFields(false) ?> <a href="<?php echo url_for('adminservice/index') ?>">Back to list</a> <?php if (!$form->getObject()->isNew()): ?> <?php echo link_to('Delete', 'adminservice/delete?id='.$form->getObject()->getId(), array('method' => 'delete', 'confirm' => 'Are you sure?')) ?> <?php endif; ?> <input type="submit" value="Save" /> </td> </tr> </tfoot> <tbody> <?php echo $form->renderGlobalErrors() ?> <tr> <th><?php echo $form['name']->renderLabel() ?></th> <td> <?php echo $form['name']->renderError() ?> <?php echo $form['name']?> </td> </tr> <tr> <th><?php echo $form['logo_url']->renderLabel() ?></th> <td> <?php echo $form['logo_url']->renderError() ?> <?php echo $form['logo_url'] ?> </td> </tr> <tr> <th><?php echo $form['call_center_number']->renderLabel() ?></th> <td> <?php echo $form['call_center_number']->renderError() ?> <?php echo $form['call_center_number'] ?> </td> </tr> <tr> <th><?php echo $form['catcher_id']->renderLabel(); $catcher_id = $form->getObject()->getCatcherId(); $catcher = LpmCatcherPeer::getByCatcherId($catcher_id); $catcher_name = $catcher->getName(); ?></th> <td> <?php echo $form['catcher_id']->renderError() ?> [COLOR="Red"]<select name="services" onchange="refreshPage(this.form.services)">[/COLOR] <?php $catcher_names = LpmCatcherPeer::getByAllNames(); foreach($catcher_names as $row) { ?> <option value="<?php echo $row->getName()."/".$row->getId();?>" <?php if($row->getName() == $catcher_name) echo ' selected="selected"'; ?> ><?php echo $row->getName();?></option> <?php } [COLOR="Red"]if ($row->getName() == "zed-catcher") //just thought with the return in my java script i can pass the newley selected value back to here and if it meets the if i echo these lines?? { echo $form['service_code']->renderLabel(); echo $form['service_code']->renderError(); echo $form['service_code']; } [/COLOR] ?> </select> </td> </tr> <tr> <th><?php echo $form['price_description']->renderLabel() ?></th> <td> <?php echo $form['price_description']->renderError() ?> <?php echo $form['price_description'] ?> </td> </tr> </tbody> </table> </form> </body> thanks! I have a javascript that takes information from a form and recompiles that information into a readable shift report. The problem I am having is with returns in the textareas. I tried: Code: theReport = theReport.replace("
","<br>"
but that space puts the rest of the var on a different line and screws with the results. How can I replace a return with <br>? Have a jsp page with 10 editable fields and in last Add Button.Now when user edit a field from value 10 to 20(example)and click on Add .Value will be changed and focus will return to the same field.similarly for other fields.how to to .any code sample?
Hello, How can this be made to return confirmation? <form id="score_form" method="post" action="addscore.php"><input id="score" name="score" value="" type="hidden"><img id="collect" style="cursorointer;height: 37px; width: 100px; margin-top: 13px;" src="./collectlive.gif" onclick="collect_points();"></form> Letsay the confirmation window would say"ARE YOU SURE" I want the output to be this way Student: Doe, John eMail: jd@email.com Course ID: COIN-O70A.01 ----------------------- Can any one pls help me with the display. If I use alert instead of return then I works. But I need to display it in the document. Code: <html>
<head>
<title>Variable - Examples 1</title>
<script type="text/javascript">
function Student(firstName, lastName, email,courseID){
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
this.courseID = courseID;
}
Student.prototype = {
constructor : Student,
toString : studentInfo
};
function studentInfo(){
return this.firstName + "," + this.lastName + '\n'+ this.email + '\n' + this.courseID;
}
var student = new Student("Doe", "John", "Doeohn@gmail.com","COIN 70A.01");
</script>
</head>
<body>
<script type="text/javascript">
document.writeln(student.toString());
</script>
</body>
</html>
hi,i don't understand about the jquery basic example the code is below PHP Code: <html> <head> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("button").click(function(){ $('p').addClass(function(n){ return 'par_' + n; }); }); }); </script> <style type="text/css"> .par_0 { color:blue; } .par_1 { color:red; } </style> </head> <body> <h1>This is a heading</h1> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <button>Add classes to p elements</button> </body> </html> i want to understand about the how is work function(n){ in the function a and how work return function return 'par_' + n; thanks mate Im working on a function where i need to return the active elements ID. the element will have class="main" id="1" onmouseover="showSub()"> Would someone be able to write me a simple function which simply puts the elements ID number in an alert box? I can figure out the rest i need from that . Thanks, Tom i achieved to make a chain: Code: function getId(id) {
id_elem = document.getElementById(id);
return {
color:function(e){
id_elem.style.color = e;
}
};
}
so this can be getId("test").color("red"); but what happens if i want to do that? Code: function getId(id) {
id_elem = document.getElementById(id);
return id_elem;
return { ????......
how can i chain if i use return in the first place? hi, i wanna get the value from javascript to php variable. here is my code, <html> <body> <select name="drop" size="10" onchange="drp_selectd_value(this)"> <option>One</option> <option>Two</option> <option>Three</option> <option>Four</option> <option>Five</option> </select> <?php echo "The PHP value".'<script>value_return();</script>'; $p='<script>y;</script>'; ?> </body> </html? <script> var x; var y=100; function drp_selectd_value(sdf) { x=sdf.value; alert("Value is : " +x); value_return(x); } function value_return(val) { alert("Second Function calling : "+val ); return val; } </script> This code does not working!!! How can i fix tis problem???I m expecting for the reply.. Thanks in advance Its a ads rotation code: Don know why it doesnt work... Code: <body>
<div align="center">
<script>
var brw=navigator.appName;
var id;
if(brw == "Netscape") id=1;
if(brw =="Microsoft Internet Explorer") id=2;
if(brw == "Opera") id=3;
var delay=10000;
var k=0;
var fcontent=new Array();
var b=new Array();
function go(k) {
b[0]=''
b[1]='<iframe src="http://........." width="460" height="60" scrolling="no" name="cpm" frameborder="0"></iframe>'
b[2]='<iframe width="468" height="60" allowtransparency="false" frameborder="0" hspace="0" vspace="0" marginheight="0" marginwidth="0" scrolling="no" src="http://............"></iframe>'
b[3]='<iframe width="468" height="120" allowtransparency="false" frameborder="0" hspace="0" vspace="0" marginheight="0" marginwidth="0" scrolling="no" src="http://............"></iframe>'
if(id != 3)
b[4]='<iframe width="1" height="1" allowtransparency="false" frameborder="0" hspace="0" vspace="0" marginheight="0" marginwidth="0" scrolling="no" src="http://......."></iframe>'
else b[4]=''
b[5]='..'
.....
.....
b[36]='.... '
return;
}
begintag='<div style="font: normal 14px Arial; padding: 5px;">'; //set opening tag, such as font
declarations
fcontent[0]=b[0]+b[1]+b[2]+b[3]+b[4]+b[5];
fcontent[1]=b[6]+b[7]+b[8]+b[9]+b[10];
fcontent[2]=b[11]+b[12]+b[13]+b[14]+b[15];
fcontent[3]=b[16]+b[17]+b[18]+b[19]+b[20];
fcontent[4]=b[21]+b[22]+b[23]+b[24]+b[25];
fcontent[5]=b[26]+b[27]+b[28]+b[29]+b[30];
fcontent[6]=b[31]+b[32]+b[33]+b[34]+b[35];
fcontent[7]=b[0]+b[36];
closetag='</div>';
var ie4=document.all&&!document.getElementById;
var DOM2=document.getElementById;
var index=0;
//function to change content
function changecontent(){
if (index>=fcontent.length )
{ index=0; ++k;delay=delay+5000; }
go(k);
if(delay>15000){return;}
if (DOM2){
document.getElementById("fscroller").innerHTML=begintag+fcontent[index]+closetag
}
else if (ie4)
{
document.all.fscroller.innerHTML=begintag+fcontent[index]+closetag;
}
++index;
setTimeout("changecontent()", delay);
}
if (ie4||DOM2)
document.write('<div id="fscroller" style="width:700px;"></div>');
if (window.addEventListener)
window.addEventListener("load", changecontent, false)
else if (window.attachEvent)
window.attachEvent("onload", changecontent)
else if (document.getElementById)
window.onload=changecontent
</script>
</div>
</body>
here go(k); function might do this mass (output-->NaN). plz b a help... All, I have searched and experimented for quite some time to figure out how to read the return value from a function and have some sort of simple error that I suspect all of you will see immediately. I have tried to return a boolean, a string and a number to use a decision variable... Can one of you look at the code below and tell me what I am missing? (I am running this code a a workstation without any web server due to employer restrictions but I am having the same trouble on my development server ...) (I am trying to make a reusable function that will read the URL and let me know if it has a word in it so I can perform some logic.) Any help would be greatly appreciated... Thanks... <html> <head> <title> JS Test 1</title> <script type="text/javascript"> function OnBodyLoadLogic(){ // UrlHandler(); a test peice of code... UrlHandlerBoolean(); if (UrlHandlerBoolean() == true) { alert("This has the value some URL in the URL"); } else { alert("some is not in the URL"); } } function UrlHandler(){ var urlValue = (window.location.host); var urlValueLowerCase = urlValue.toLowerCase(); if (urlValueLowerCase.indexOf("some URL") != -1) { alert("This has the value some URL in the URL"); } else{ alert("some is not in the URL"); } } function UrlHandlerBoolean(){ var urlValue = (window.location.host); var urlValueLowerCase = urlValue.toLowerCase(); if (urlValueLowerCase.indexOf("some URL") != -1) { return true; } else{ return false; } } function load() { alert("Page is loaded"); } </script> </head> <body onload="OnBodyLoadLogic()"> <h3> JS Return Value</h3> <p> This the beginning of the Page. </p> <div> A Test Div <span id="ReturnValueDisplay" >Initial Value</span> </div> </body> </html> |
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