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Editorial Team
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Asked: 2026-06-18T10:38:43+00:00

I’m trying to make the short Javascript code throw an alert and show 93

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I’m trying to make the short Javascript code throw an alert and show 93 instead of 0-93 but it’s not working ?

<html>
    <head>
    <script type="text/javascript">
    function numberFromInput(value) {
  return  alert(Number(value.match(/[-]?(\d*)$/).pop()));
}
</script>
</head>
<body>

numberFromInput(0-93);

</body>
</html>
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1 Answer

  1. Editorial Team

    You have to call the function (you’re just displaying its call code as content). And you have to pass the value as a string (you need quotes around 0-93):

    <script type="text/javascript">
function numberFromInput(value) {
    return alert(Number(value.match(/[-]?(\d*)$/).pop()));
}
numberFromInput("0-93");
</script>
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