type numeric value only in textbox javascript

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showing results for - "type numeric value only in textbox javascript"
Angelo
30 May 2016
1function isNumber(evt) {
2    evt = (evt) ? evt : window.event;
3    var charCode = (evt.which) ? evt.which : evt.keyCode;
4    if (charCode > 31 && (charCode < 48 || charCode > 57)) {
5        return false;
6    }
7    return true;
8}
9
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Aidan
01 Mar 2019
1<input type="text" class="textfield" value="" id="extra7" name="extra7" onkeypress="return isNumber(event)" />
2
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