Web Reference: Learn how to find the length of a string in JavaScript. The length property returns the length of a string: Read more about strings in our JavaScript Strings Tutorial. Read more about the length property in our JavaScript String length Reference. W3Schools is optimized for learning and training. You can find the length of a String value by writing .length after the string variable or string literal. The value 10 would be displayed in the console. Note that the space character between "Alan" and "Peter" is also counted. Jul 23, 2025 · Another approach to determine the length of a given string in JavaScript is by utilizing the spread operator (...) along with the reduce () method. This method is less conventional but demonstrates the flexibility of JavaScript in processing strings and arrays.
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