JQuery :: Detect Change In Textbox And Send Typing/not Typing 4 Ajax?

Aug 4, 2010

I've already developed a system for doing this which isn't perfect i'm wondering if there is a better solution. Here is the code I got atm.

[Code]...

I don't like the use of key == 8 and length == 1 to detect that chatmsg box is empty, but the event triggers before the val() of the chatmsg actually changes. So is there nothing better I can do?

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[Code]...

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I need to perform an Ajax request as someone is typing into a text field. But I don't want to trigger a request on every key press. What I need is to perform the request if a key has not be pressed for x number of milliseconds.I seen an answer here - Time Restraint - but I'm having difficulty applying it to my situation.I'm using jquery and this is a trimmed down version of my current code:

javascript Code:
Original
- javascript Code

I don't know how to change this function to use setTimeout in a way that lets me execute a trigger function on a control relative to the current field. Ideally I need to pass $(this) as a parameter for the function setTimeout calls, but I don't know how to do that when the function call is passed as a string.

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I'm creating an AJAX user validation so that when a user types in a username, it checks it in the database to see if it exists. I want it to execute after the user finishes typing. I've tried using:
$("#username_field").keyup(function(){
which works, but I don't want a query executed every time the users presses a key. I was wondering if there was a better way to do it. Meaning I what the check to be preformed after the user finishes typing.

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I've made javascript tutorial for those who want to learn more

Here's the tutorial on my front page : [url] or direct link : [url]

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Nov 25, 2011

I have a textarea where i want the user to just enter the values: $x $y $z $a $b $c (,),+,-,*,/ ^ Here what i have so far Formula <textarea name="formula" onkeyup="check(this.value)" >

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<form action="index.php?" method="post">
search string: <input type="text" search="" />
<input type="submit" />
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Convert LowerCase To UpperCase While Typing

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I post a little function which will help you to convert lowerCase to UpperCase while you are typing.


Code:

<script language="javascript" type="text/javascript">
function pulsar(e,obj) {
tecla = (document.all) ? e.keyCode : e.which;
//alert(tecla);
if (tecla!="8" && tecla!="0"){
obj.value += String.fromCharCode(tecla).toUpperCase();
return false;
}else{
return true;
}
}
</script>

<input type="text" onkeypress="return pulsar(event,this)" />

If you could help me to improve this function your advice is very welcome.....

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The only way I know of doing this at present with javascript is so that the page only checks this after the page was submitted, and then notify the user either through an alert window or by highlighting the questioned area/text box.

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[Code]....

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Code:
function showHide (header,name) {
var table = document.getElementById('RackResults');//Get a handle to the tablE

[code]....

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[CODE]
<html>
<head>
<script type='text/javascript'>
function player()
{
document.getElementById("Player2").value= document.getElementById("Player1").value;
[Code]...

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[Code]..

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Live OnChange - Run The Script Every Time A Character Changes Even If The User Is Still Typing?

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I have a registration page with a username field and every time a character is type I would like to call a javascript function to test for a unique username. My function is working fine but I'm currently using onChange to call it and I noticed that onChange is less of an actual onChange and more of a onChange if onBlur. Is it possible to run the script every time a character changes even if the user is still typing? Note, I'm using ASP.NET in VB to write this page but I'd like to do this with javascript and not post back if at all possible.

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