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reywood/gist:8721917

Created January 30, 2014 22:57
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Modify checkbox state based on input value
Raw
gistfile1.html
<html>
<head>
<script>
function handleKeyUp(input) {
document.getElementById('cb').checked = input.value.length > 0;
}
</script>
</head>
<body>
<input type="checkbox" id="cb">
<input type="text" onkeyup="javascript: handleKeyUp(this);">
</body>
</html>
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