allowing tab key when we are allowing only numbers in textbox using java script

Question

i written a java script which allows only numbers,comma,dot. i applied it on four text boxes. my issue is i have 10 text boxes which takes different types of data on which four of them i applied java script. i can use tab key on other text boxes but i am not able to use on java script applied text boxes to move courser. is there any change that i have to do in my script... Thanks.

Java Script:-

function isNumberCommaDot(evt) { var theEvent = evt || window.event; var key = theEvent.keyCode || theEvent.which; key = String.fromCharCode(key); if (key.length == 0) return; var regex = /^[0-9,\9\b]*\.?[0-9]*$/; if (!regex.test(key)) { theEvent.returnValue = false; if (theEvent.preventDefault) theEvent.preventDefault(); } }

i used \9 in regex but still its not accepting tab key.(9 is ASCII char. for TAB Key)

Community · Accepted Answer · 2017-05-23 11:44:16Z

You can check whether it was a tab press earlier, and just skip processing

function isNumberCommaDot(evt) { var theEvent = evt || window.event; var key = theEvent.keyCode || theEvent.which; if (key === 9 ) { //TAB was pressed return; } key = String.fromCharCode(key); if (key.length == 0) return; var regex = /^[0-9,\9\b]*\.?[0-9]*$/; if (!regex.test(key)) { theEvent.returnValue = false; if (theEvent.preventDefault) theEvent.preventDefault(); } }

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