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JavaScript - detect if text overflows element (horizontally or vertically)
3 points
In this article, we would like to show you how to detect if text overflows element horizontally or vertically in JavaScript.
Quick solution:
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function isTextOverflowing(element) {2
return (element.clientWidth < element.scrollWidth || element.clientHeight < element.scrollHeight);3
}4
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// Usage example:7
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const element = document.querySelector('#element');9
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if (isTextOverflowing(element)) {11
// ...12
}
In this example, we check if the element's clientWidth or clientHeight values are less than its scrollWidth or clientHeight values to determine if the text is overflowing the element horizontally or vertically.
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<html>3
<head>4
<style>5
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div.text {7
padding: 5px;8
border: 1px solid red;9
width: 200px; /* <------ limits element width */10
height: 23px; /* <------ limits element height */11
white-space: nowrap; /* <------ prevents text from wrapping */12
overflow: hidden; /* <------ hides content overflowing */13
}14
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</style>16
</head>17
<body>18
<div id="text-1" class="text">19
Short text20
</div>21
<div id="text-2" class="text">22
"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."23
</div>24
<div id="text-3" class="text">25
1<br />26
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3<br />28
</div>29
<script>30
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function isTextOverflowing(element) {32
return (element.clientWidth < element.scrollWidth || element.clientHeight < element.scrollHeight);33
}34
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// Usage example:37
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const text1 = document.querySelector('#text-1');39
const text2 = document.querySelector('#text-2');40
const text3 = document.querySelector('#text-2');41
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console.log(isTextOverflowing(text1)); // false43
console.log(isTextOverflowing(text2)); // true44
console.log(isTextOverflowing(text3)); // true45
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</script>47
</body>48
</html>
