The split()
method divides a string into a list of substrings and returns them as an array.
Example
const message = "JavaScript::is::fun";
// divides the message string at ::
let result = message.split("::");
console.log(result);
// Output: [ 'JavaScript', 'is', 'fun' ]
split() Syntax
The syntax of split()
is:
str.split(separator, limit)
Here, str
is a string.
split() Parameter
The split()
method takes in:
- separator (optional) - The pattern (string or regular expression) describing where each split should occur.
- limit (optional) - A non-negative integer limiting the number of pieces to split the given string into.
split() Return Value
- Returns an
Array
of strings, split at each point where the separator occurs in the given string.
Note: The split()
method does not change the original string.
Example: Using split()
console.log("ABCDEF".split("")); // [ 'A', 'B', 'C', 'D', 'E', 'F' ]
const text = "Java is awesome. Java is fun.";
let pattern = ".";
let newText = text.split(pattern);
console.log(newText); // [ 'Java is awesome', ' Java is fun', '' ]
let pattern1 = ".";
// only split string to maximum to parts
let newText1 = text.split(pattern1, 2);
console.log(newText1); // [ 'Java is awesome', ' Java is fun' ]
const text2 = "JavaScript ; Python ;C;C++";
let pattern2 = ";";
let newText2 = text2.split(pattern2);
console.log(newText2); // [ 'JavaScript ', ' Python ', 'C', 'C++' ]
// using RegEx
let pattern3 = /\s*(?:;|$)\s*/;
let newText3 = text2.split(pattern3);
console.log(newText3); // [ 'JavaScript', 'Python', 'C', 'C++' ]
Output
[ 'A', 'B', 'C', 'D', 'E', 'F' ] [ 'Java is awesome', ' Java is fun', '' ] [ 'Java is awesome', ' Java is fun' ] [ 'JavaScript ', ' Python ', 'C', 'C++' ] [ 'JavaScript', 'Python', 'C', 'C++' ]
Note: If the separator is a regular expression with capturing parentheses, then each time the separator matches, the results of the capturing parentheses are spliced into the output array.
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