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<!DOCTYPE html>
<html>
<body>
​
<h1>JavaScript 字符串方法</h1>
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<p>padEnd() 方法用另一段字符串填充字符串：</p>
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<p id="demo"></p>
​
<script>
let text = "5";
document.getElementById("demo").innerHTML = text.padEnd(4,0);
</script>
​
</body>
</html>
​