Escape text for safe use in JavaScript string literals

Escape text so it can appear safely inside a JavaScript string literal.

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ToolJavaScript Escape
Input
Output
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How it works

Characters with syntactic meaning in JavaScript string literals are replaced with escape sequences such as backslash, quote, newline, or Unicode code-unit escapes. The result is source text, not a JavaScript value with executable behavior.

  • Escapes preserve delimiters and control characters under ECMAScript lexical grammar.

Worked example

Escape Quotes
Escape special characters for use in a JavaScript string literal
Input
											He said "hello"
New line
Output
												He said \"hello\"\nNew line

When to use this

Templates, inline-script fixtures, and serializers escape JavaScript string values.

Edge cases

  • A backslash must be escaped before a quote is considered safe.
  • U+2028 and U+2029 need care in older script embedding contexts.
  • JavaScript escaping is not the same as HTML-attribute escaping.

References