How to protect user to clear checkbox using javascript ?
I want to protect clear checkbox from user using javascript
(not use disabled tag) How can i do that ?
<input type="checkbox" id="c1" checked> Do not uncheck
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as long as you know if it was checked (or) not, set that value again in the clickhandler – lboshuizen Sep 12 '14 at 16:57
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4why display a checkbox at all, then? – Marc B Sep 12 '14 at 16:59
1 Answers
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Not sure why you'd want a checkbox that can't be unchecked but you can simply do this:
$(".dontUncheck").click(function(e){
e.preventDefault();
$(this).prop("checked", "checked");
});
<input type='checkbox' checked class="dontUncheck" />
Here's the fiddle: http://jsfiddle.net/0x9vp6ca/
Birgit Martinelle
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you can just change the click handler to this: $("#c1).click(... and it will listen to the checkbox with id c1 – Birgit Martinelle Sep 12 '14 at 17:14
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When checkbox `id="c1"` not check , i don't checked checkbox ? – การกรกรกร กกกนรกี Sep 12 '14 at 17:16
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when checkbox `id="c1"` checked , user not clear #######but when checkbox `id="c1"` clear , user can checked – การกรกรกร กกกนรกี Sep 12 '14 at 17:27
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if you want the user to be able to click on the (unchecked) checkbox first, and then be unable to uncheck it again you can remove the line e.preventDefault(); and you'll accomplish what you need. – Birgit Martinelle Sep 12 '14 at 17:31