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$ curl repovive.com/roadmaps/javascript/strings-numbers/the-trim-methods

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$ curl repovive.com/roadmaps/javascript/strings-numbers/the-trim-methods

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The trim Methods - Strings & Numbers | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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The trim Methods

Removing whitespace

Remove whitespace from strings:

let input = "  hello  "
console.log(input.trim())       // "hello"
console.log(input.trimStart())  // "hello  "
console.log(input.trimEnd())    // "  hello"

This is useful for cleaning user input:

let username = userInput.trim()
if (username.length > 0) {
  // Process valid input
}

Whitespace includes spaces, tabs, and newlines.