JQuery .isNumeric

Question

I have a text box with an id of EmpNum. I cannot figure out how to use jQuery's isNumeric to check to see if the value is numeric or not.

I tried:

    ('#.EmpNum').IsNumeric

but that did not work.

The documentation is here: http://api.jquery.com/jQuery.isNumeric/ You have to understand the difference between methods and static functions... — Šime Vidas, Dec 01 '11 at 15:02

score 49 · Accepted Answer · answered Dec 01 '11 at 15:00

49

according to http://api.jquery.com/jQuery.isNumeric/

it's :jQuery.isNumeric(value)

so, it should be $.isNumeric($("#EmpNum").val())

answered Dec 01 '11 at 15:00

Ya Zhuang

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score 15 · Answer 2 · edited May 18 '16 at 10:56

15

Shouldn't it be more like...

if($.isNumeric($('#EmpNum').val()))

edited May 18 '16 at 10:56

w5m

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46

answered Dec 01 '11 at 14:59

Laurence Burke

2,348
14
26

1

This answer is correct; here's the [documentation](http://api.jquery.com/jQuery.isNumeric/) to compliment his answer. – jabclab Dec 01 '11 at 15:02

score 5 · Answer 3 · answered Dec 01 '11 at 15:01

5

Pass in the value as an argument to isNumeric. Also make sure you are using jQuery version 1.7 as this was added in 1.7.

$.isNumeric( $('#EmpNum').val() )

answered Dec 01 '11 at 15:01

aziz punjani

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score 4 · Answer 4 · edited Sep 17 '18 at 11:19

4

it should be like this

$.isNumeric($('#EmpNum').val());

edited Sep 17 '18 at 11:19

Ullas

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50

answered Feb 10 '16 at 06:04

homi

201
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5

score 2 · Answer 5 · answered Feb 26 '20 at 06:35

Depending on what version of jQuery you are using, but as "$.isNumeric()" function is deprecated (https://jquery.com/upgrade-guide/3.0/#breaking-change-jquery-isnumeric-and-custom-tostring) since jQuery Core 3.0 Update, I found a custom solution for this problem (originally posted here: https://stackoverflow.com/a/9716488/3323790):

function isNumeric(n) {
    return !isNaN(parseFloat(n)) && isFinite(n);
}

score 1 · Answer 6 · answered Aug 30 '17 at 06:26

1

You Should use simple and easy way like:

var value=$('#txtNumber').val();

if($.isNumeric(value))

{

//write your code here

}

answered Aug 30 '17 at 06:26

gaurav gupta

31
2

score 0 · Answer 7 · edited May 27 '16 at 14:37

0

For me $.isNumeric($('#EmpNum').val()); did not work.

I had to use this:

var temp = $('#EmpNum').val();

$.isNumeric(temp);

edited May 27 '16 at 14:37

Paul Roub

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answered May 27 '16 at 14:29

Justin Lachapelle

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10

score 0 · Answer 8 · answered Dec 01 '11 at 15:00

0

Try the following:

$.isNumeric($('#EmpNum').text())

Also the isNumeric method was only added in version 1.7, which version are you using?

See here for jsFiddle.

answered Dec 01 '11 at 15:00

Rich O'Kelly

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JQuery .isNumeric

8 Answers8