23 lines
624 B
HTML
23 lines
624 B
HTML
<html>
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<body>
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<body>
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<div id="wrapper">JavaScript is fun!</div>
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<input type="text" name="myNum1" onkeypress="numCheck()">
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<input type="text" name="myNum2" onkeypress="numCheck2()">
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<script>
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function numCheck() {
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message("Number: " + !isNaN(event.key));
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return !isNaN(event.key);
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}
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function numCheck2() {
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message("Not a number: " + isNaN(event.key));
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return isNaN(event.key);
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}
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function message(m) {
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document.getElementById('wrapper').innerHTML = m;
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}
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</script>
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</body>
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</html> |