String.prototype.padEnd(targetLength, padString?) returns a new string padded at the end until it reaches targetLength. Default filler is a space. It never mutates the original.
Pass the required arguments shown below. Check return values and browser support before you rely on the result.
Call string.padEnd. Start with this line.
str.padEnd(targetLength, padString?)| Call | What it does |
|---|---|
str.padEnd(targetLength, padString?) | Primary signature. |
string.padEnd(...) | Call with the arguments your case needs. |
Built into JavaScript. Call padEnd(...) on a string (or String instance) — no import required.
str.padEnd(targetLength, padString?)| Parameter | Description |
|---|---|
| targetLength | Required. Desired final .length (UTF-16 units) |
| padString | Optional. Filler; default " "; truncated if too long |
| Return Value | Description |
|---|---|
| * | The value returned by string.padEnd(). |
Pad with dots or the default space until a target length.
console.log("hi".padEnd(5, ".")); // "hi..."
console.log("200".padEnd(5)); // "200 ""hi" has length 2; target is 5 → need 3 chars."." characters make "hi...".padString pads "200" with two spaces to length 5.A short filler repeats; a long filler is cut to fit exactly.
console.log("abc".padEnd(10, "foo")); // "abcfoofoof"
console.log("abc".padEnd(6, "123456")); // "abc123"
console.log("abc".padEnd(2, ".")); // "abc""foo" is tiled until seven chars are needed → "foofoof"."123456" are used → "abc123".2 is already less than length 3 → "abc".result.length === targetLength.padEnd() vs padStart()Right pad for labels; left pad for leading zeros.
console.log("Name".padEnd(8, " ") + "Ada"); // "Name Ada"
console.log("5".padStart(3, "0")); // "005"
console.log("5".padEnd(3, "0")); // "500""Name" grows to width 8 so values line up on the right."005".padEnd with "0" yields "500" — not zero-padding.padEnd; leading zeros → padStart.String.prototype.padEnd() is part of ES2017 and is Baseline Widely available across modern browsers.
Supported in Chrome 57+, Firefox 48+, Safari 10+, Edge 15+, and Node.js 8+. Not available in Internet Explorer without a polyfill.
Bottom line: Safe for modern web apps and current Node LTS releases. Feature-detect with if ("padEnd" in String.prototype) or use a small polyfill for very old targets.
Learn how to pad a string on the left — perfect for leading zeros.
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