Javascript to Prevent ASP.NET button click

Question

Without using jQuery (can't get into why NOT right now) how do I disable an ASP.NET button from being "clickable" if a certain client-side condition is not met?

why aren't you able to remove the button from asp.net ? Javascript can be disabled and any advanced user will be able to click on the button if they want to... — VirtualTroll
– VirtualTroll, Commented Jun 7, 2011 at 19:51

Bala R · Accepted Answer · 2011-06-07 19:47:23Z

2

You can do something like this with pure javascript.

if(someCondition)
    document.getElementById("buttonClientID").disable = true;
else
    document.getElementById("buttonClientID").disable = false;

answered Jun 7, 2011 at 19:47

Bala R

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FishBasketGordo · Accepted Answer · 2011-06-07 19:46:47Z

2

The button will be rendered as an <input> tag on the client side. Find the input using the standard JavaScript document.getElementById and set its disabled property to true.

answered Jun 7, 2011 at 19:46

FishBasketGordo

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noinstance · Accepted Answer · 2011-06-07 19:48:52Z

2

OnClientClick="return false;" will prevent the post back, without disabling the button. And you can add an alert('button disabled') if wanted.

answered Jun 7, 2011 at 19:48

noinstance

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JonH · Accepted Answer · 2011-06-07 19:48:32Z

1

Use javascript:

document.form1.button.disabled=true;

or try

document.getElementByID('myButton').disabled=true;

answered Jun 7, 2011 at 19:48

JonH

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