String.prototype.slice()
The JavaScript string method .slice()
extracts a portion of a string and returns a new string.
Syntax
str.slice(beginSliceIndex[, endSliceIndex]);
Parameters
beginSliceIndex
The zero-based index where the slice should begin. If beginSliceIndex is a negative number, .slice()
counts
backwards from the end of the string to determine where to begin the slice.
endSliceIndex
Optional. The zero-based index where the slice should end. If omitted, .slice()
extracts to the end of the string.
Description
.slice()
slices the text out of one string and returns a new string.
Examples
Using .slice()
to create a new string
var string1 = "Hello World!";
var string2 = string1.slice(3);
console.log(string2); // Will log "lo World!"
var string3 = string1.slice(3, 7);
console.log(string3); // Will log "lo W"
Using .slice()
with negative indices
var string = "Hello World!"
str.slice(-3); // Returns "ld!"
str.slice(-3, -1); // Returns "ld"
str.slice(0, -1); // Returns "Hello World"
Source MDN