check if hidden field exist

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I have hidden field like

<input id="mainage[1]" type="hidden" name="mainage[1]" value="1"></input>

and want to check from jquery or javascript if it exist

how to do it

Posted 26-Nov-13 20:08pm

maulikshah1990

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3 solutions

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Peter Leow · Answer 1 · 2013-11-26T20:28:00

JavaScript has a document.contains function that returns either true or false, try this,

XML

<!DOCTYPE html>
<html>
<body>

<p>A demo page.</p>

<button onclick="myFunction()">Try it</button>

<input id="mainage[1]" type="hidden" name="mainage[1]" value="1"></input>

<script>
function myFunction()
{

var element=document.getElementById("mainage[1]");
document.write(document.contains(element));
}
</script>

</body>
</html>

sankarsan parida · Answer 2 · 2013-11-26T20:40:00

Solution 2

SQL

You can use length to see if your selector matched anything.

if ($('#MyId').length > 0) {
    // dostuff
}

Posted 26-Nov-13 20:40pm

sankarsan parida

Jenno Richi · Answer 3 · 2013-11-26T21:01:00

What you can do is you can have a common class name for all those hidden fields

say like this

<input id="mainage[1]" type="hidden" name="mainage[1]" value="1" class="hidden_field"></input>
<input id="mainage[2]" type="hidden" name="mainage[2]" value="2" class="hidden_field"></input>
.
.
.Goes on

so I can write

if($(".hidden_field").length &gt;1){
         // Do what you wanna make
}

check if hidden field exist

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check if hidden field exist

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