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Avoid posting back when user clicks html button

I want to avoid posting back when user clicks an html button. because i want show one pop up using javascript. I dont want postback when the button is clicked.
function ShowEditChoicesPopup() {
// I want to show some pop up here.
$("popupdiv").show();
return false;
}
And the markup am using is:
<button onclick="javascript:ShowEditChoicesPopup();"> Edit Choices </button>
Please suggest some idea.

Apply event.preventDefault();
function ShowEditChoicesPopup(event) {
event.preventDefault();
$("popupdiv").show();
}

Try with the below code snippet.
<button onclick="javascript:return ShowEditChoicesPopup();">
OR
<button onclick="javascript:return ShowEditChoicesPopup(); return false;">
OR
<button onclick="javascript:ShowEditChoicesPopup(); return false;">

Try:
function ShowEditChoicesPopup() {
// I want to show some pop up here
$("popupdiv").show();
return false;
}
return false;
}
You need a second return false for ShowEditChoicesPopup() which should cancel form submission. This assumes the code is in a <form> block.

Use event.preventDefault(); which will prevent default behaviour of the element and performs specified function

Follow the example:
http://jsfiddle.net/guinatal/ct8uS/1/
HTML
<form>
<button onclick="return ShowEditChoicesPopup();"> Edit Choices </button>
<div id="popupdiv" style="display:none">popupdiv</div>
</form>
JS
function ShowEditChoicesPopup() {
// I want to show some pop up here
$("#popupdiv").show();
return false;
}

Disable image link on click

I have a image that links to a page. This is a process button which can take up to 20 seconds to run.
I want to prevent the user from pushing it more than once.
How would I write a Javascript that when the button is pushed, it would follow the hyperlink, but the link for the button would disable, and the image would change?

<script>
function buttonClicked()
{
document.getElementById('buttonImage').src = 'new-image.jpg';
document.getElementById('buttonId').disabled = true;
}
</script>
<a id="buttonId" href="next-page.html" onclick="return buttonClicked()"><img id="buttonImage" src="image1.jpg"></a>

From your question, it sounds like your "button" is the image that you click on...if that's true then you can use the following:
<a id="my_link" href="/page_to_vist_onclick"><img id="my_image"></a>
Then your javascript would be:
document.getElementById('my_link').onclick = function() {
document.getElementById('my_link').disabled = true;
document.getElementById("my_image").src='the_path_to_another_image';
};

On click, remove the href attribute from the a element.

I ended up going with the following:
$(document).ready(function() {
var isSubmitted = false;
$("#submit").click(function(e) {
if ( ! isSubmitted ) {
isSubmitted = true;
var src = $(this).attr("src").replace("gold","red");
$(this).attr("src", src);
} else {
e.preventDefault();
}
});
});

Here is a really simple one for you
in your JS
function Create(){
document.write('<INPUT disabled TYPE="button" value="Click Me!">');
}
in your HTML
<INPUT TYPE="button" value="Click Me!" onclick="Create()">
If you are ready to use jQuery, then here is another solution.
$("selectorbyclassorbyIDorbyName").click(function () {
$("selectorbyclassorbyIDorbyName").attr("disabled", true).delay(2000).attr("disabled", false);
});
select the button and by its id or text or class ... it just disables after 1st click and enables after 20 Milli sec
Works very well for post backs n place it in Master page, applies to all buttons without calling implicitly like onclientClick

you can use this.
<script>
function hideme()
{
$("#buttonImage").hide();
}
</script>
<a id="buttonId" href="next-page.html" onclick="return hideme()"><img id="buttonImage" src="image1.jpg"></a>
if you don't want to hide image please use this..
$('#buttonImage').click(function(e) {
e.preventDefault();
//do other stuff when a click happens
});
That will prevent the default behaviour of a hyperlink, which is to visit the specified href.

Let's make a jquery plugin :
$.fn.onlyoneclick=function(o){
var options=$.extend({src:"#"},o);
$(this).click(function(evt){
var $elf=$(this);
if( $elf.data("submitted") ){
evt.preventDefault();
return false;
}
$elf.attr("src", typeof(options.src) == 'function' ?
options.src($elf.attr("src"))
: options.src
).data("submitted",true);
});
}
$(".onlyoneclick").onlyoneclick({
src : function( src ){
return src.replace("gold","red");
}
})
on any button that should trigger only once :
<button ... class="onlyoneclick">tatatata... </button>

its simple...just one line of code :)
Onclick return false.

JavaScript button function swap

What I am trying to do is following:
I have an input type button and I want to replace it's function on first click.
<input type="submit" class="submit-button" value="Submit" name="boom" />
So a [button] that serves for submit, I wanna show alert with some jquery plugins but lets do it here with normal javascript alert (default window).
So on first click it will be
alert('Something');
And on second click it will be default function (submit).
How can I achieve something like this?
Of course if button is clicked once, and then page reloaded, it will show same alert again on first button click.

Use one().
Attach a handler to an event for the elements. The handler is executed at most once per element.
Example:
$(".submit-button").one("click", function(e) {
// will only run on first click of element
e.preventDefault();
alert("Something");
});

Try this:
<script type="text/javascript">
var clicked = false;
function btnClick(e) {
if(clicked === false) {
alert('Something');
clicked = true;
e.preventDefault();
return true;
} else {
return false;
}
}
</script>
<input type="submit" onclick="btnClick(event)" class="submit-button" value="Submit" name="boom" />

Hiding a button in Javascript

In my latest program, there is a button that displays some input popup boxes when clicked. After these boxes go away, how do I hide the button?

You can set its visibility property to hidden.
Here is a little demonstration, where one button is used to toggle the other one:
<input type="button" id="toggler" value="Toggler" onClick="action();" />
<input type="button" id="togglee" value="Togglee" />
<script>
var hidden = false;
function action() {
hidden = !hidden;
if(hidden) {
document.getElementById('togglee').style.visibility = 'hidden';
} else {
document.getElementById('togglee').style.visibility = 'visible';
}
}
</script>

visibility="hidden"
is very useful, but it will still take up space on the page. You can also use
display="none"
because that will not only hide the object, but make it so that it doesn't take up space until it is displayed. (Also keep in mind that display's opposite is "block," not "visible")

Something like this should remove it
document.getElementById('x').style.visibility='hidden';
If you are going to do alot of this dom manipulation might be worth looking at jquery

document.getElementById('btnID').style.visibility='hidden';

//Your code to make the box goes here... call it box
box.id="foo";
//Your code to remove the box goes here
document.getElementById("foo").style.display="none";
of course if you are doing a lot of stuff like this, use jQuery

If the space on that page is not disabled then put your button inside a div.
<div id="a1">
<button>Click here</button>
</div>
Using Jquery:
<script language="javascript">
$("#a1").hide();
</script>
Using JS:
<script language="javascript">
document.getElementById("a1").style.visibility = "hidden";
document.getElementById("a1").style.display = "none";
</script>

when you press the button so it should call function that will alert message. so after alert put style visible property .
you can achieve it using
function OpenAlert(){
alert("Getting the message");
document.getElementById("getMessage").style.visibility="hidden";
}
<input type="button" id="getMessage" name="GetMessage" value="GetMessage" onclick="OpenAlert()"/>
Hope this will help . Happy to help

function popAlert(){
alert("Button will be hidden on click");
document.getElementById("getMessage").style.visibility="hidden";
}
h1 {
color: #0000ff;
}
<h1>KIAAT</h1>
<b>Hiding a button in Javascript after click</b>
<br><br>
<input type="button" id="getMessage" value="Hide Button OnClick" onclick="popAlert()"/>

If you are not using jQuery I would suggest using it. If you do, you would want to do something like:
$( 'button' ).on(
'click'
function ( )
{
$( this ).hide( );
}
);

<script>
$('#btn_hide').click( function () {
$('#btn_hide').hide();
});
</script>
<input type="button" id="btn_hide"/>
this will be enough

You can use this code:
btnID.hidden = true;

var start = new Date().getTime();
while ((new Date().getTime() - start) < 1000){
} //for 1 sec delay

use button to write text to the page

I can do this with a alert but I want to print the results of a function directly to the web page.
When the user clicks the car button I want the results from the car() function to write into my id="mainContent" div.
if the user clicks the Ice Cream button I want the results from the ice cream button to replace what ever is in the mainContent div with the results from the iceCream() function

var mainContent = document.getElementById('mainContent');
carButton.onclick = function() {
mainContent.appendChild(document.createTextNode(car()));
}

Assuming you have some code like this:
<form id="ice_cream_form" action="fake" method="post">
<input type="submit" value="Ice Cream" />
</form>
You could use some JavaScript code like this:
var form=document.getElementById("ice_cream_form");
var mainContent=document.getElementById("mainContent");
if(form.addEventListener) {
form.addEventListener("submit", submitted, false);
}else if(form.attachEvent) {
form.attachEvent("onsubmit", function() {
return submitted(window.event);
});
}
function submitted(event) {
if("textContent" in mainContent) {
mainContent.textContent=iceCream();
}else{
mainContent.innerText=iceCream();
}
event.preventDefault();
event.stopPropagation();
return false;
}
If iceCream returns HTML you want to display rather than plain text you want to display, you'll probably want to replace the part that changes textContent to just set innerHTML.
Alternatively, you could use inline event handlers (although I don't really like this method because it mixes content and behavior):
<input type="button" value="Ice Cream" onclick="document.getElementById('mainContent').textContent=iceCream(); return false;" />

When, for example, the car button is clicked, this code should be run:
document.getElementById("mainContent").appendChild(
document.createTextNode(car())); /* ← there is the magic */
If you don’t know how to register this function to be launched in case of clicking the button.
Then do it like this:
var button = document.getElementById("idOfTheButton");
button.addEventListener("click",
function()
{
document.getElementById("mainContent").appendChild(
document.createTextNode(car()));
}, 1);
Adapt this code appropriately for the other button and it will work too.