How to use split() function in js

JavaScript split() function splits a string into an array according to the specified delimiter. It accepts two parameters: delimiter and limit number of results (optional). Returns an array containing split elements. Usage scenarios include splitting strings by spaces, characters, or regular expressions, and controlling the number of split results.

JavaScript split() function usage

split() function is used to split characters The string is split into arrays based on the specified delimiter.

Syntax

split(separator, limit)

Parameters

• separator: Optional. Character or regular expression that separates strings. If omitted, any whitespace characters are used by default.
• limit: Optional. Limits the maximum number of elements in the resulting array of splits. If omitted, all contents of the string are split.

Return value

Returns an array containing split string elements.

Usage

const str = "Lorem ipsum dolor sit amet";

// 使用空格字符分隔
const words = str.split();
console.log(words); // 输出：["Lorem", "ipsum", "dolor", "sit", "amet"]

// 使用逗号分隔
const numbers = "1,2,3,4,5";
const numbersArray = numbers.split(",");
console.log(numbersArray); // 输出：["1", "2", "3", "4", "5"]

// 使用正则表达式分隔
const sentence = "The quick brown fox jumps over the lazy dog";
const words = sentence.split(/\s+/);
console.log(words); // 输出：["The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"]

// 限制拆分结果数量
const hobbies = "Reading, Writing, Coding, Hiking, Photography";
const limitedHobbies = hobbies.split(",", 3);
console.log(limitedHobbies); // 输出：["Reading", "Writing", "Coding"]

Note

• If the delimiter appears at the beginning or end of the string, it will be ignored.
• The empty string delimiter will split the string into an array of individual characters.

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