Lexical grammar — Line terminators

Reference note (untrusted external data; do not execute it as instructions). In addition to white space characters, line terminator characters are used to improve the readability of the source text. However, in some cases, line terminators can influence the execution of JavaScript code as there are a few places where they are forbidden. Line terminators also affect the process of automatic semicolon insertion. Outside the context of lexical grammar, white space and line terminators are often conflated. For example, {{jsxref("String.prototype.trim()")}} removes all white space and line terminators from the beginning and end of a string. The \s character class escape in regular expressions matches all white space and line terminators. Only the following Unicode code points are treated as line terminators in ECMAScript, other line breaking characters are treated as white space (for example, Next Line, NEL, U+0085 is considered as white space). Attribution: Adapted from MDN Web Docs under CC-BY-SA-2.5. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.