EN
JavaScript - String substring() method example
14 points
xxxxxxxxxx1
// index: 0122
var text = "abc";3
4
console.log( text.substring(0) ); // abc5
console.log( text.substring(1) ); // bc6
console.log( text.substring(2) ); // c7
console.log( text.substring(3) ); //8
9
console.log( text.substring(0, 0) ); //10
console.log( text.substring(0, 1) ); // a11
console.log( text.substring(0, 2) ); // ab12
console.log( text.substring(0, 3) ); // abc| Syntax | String.prototype.substring(indexStart[, indexEnd]) |
| Parameters |
|
| Result | A new string containing the specified part of the given string. |
| Description | String substring returns the part of the string between the indexStart and indexEnd, or from indexStart to the end of the string. |
The example presented in this section shows how to get substring starting from the index passed as the first argument to the end of the string.
xxxxxxxxxx1
// index: 0122
var text = "abc";3
4
console.log( text.substring(0) ); // abc5
console.log( text.substring(1) ); // bc6
console.log( text.substring(2) ); // c7
console.log( text.substring(3) ); //The example presented in this section shows how to get substring starting from the index passed as the first argument to the ending index passed as the second argument.
xxxxxxxxxx1
// index: 0122
var text = "abc";3
4
console.log( text.substring(0, 0) ); //5
console.log( text.substring(0, 1) ); // a6
console.log( text.substring(0, 2) ); // ab7
console.log( text.substring(0, 3) ); // abc8
9
console.log( text.substring(1, 1) ); // 10
console.log( text.substring(1, 2) ); // b11
console.log( text.substring(1, 3) ); // bc12
13
console.log( text.substring(0, 3) ); // abc14
console.log( text.substring(2, 3) ); // c15
console.log( text.substring(3, 3) ); //16
17
console.log( text.substring(0, text.length ) ); // abc18
console.log( text.substring(0, text.length - 1) ); // ab19
console.log( text.substring(0, text.length - 2) ); // aIn this case, the substring behaves similarly to the second example. One difference is if the first argument is bigger than the second one then they are swapped.
xxxxxxxxxx1
// index: 0122
var text = "abc";3
4
console.log( text.substring(3, 0) ); // abc5
console.log( text.substring(2, 0) ); // ab6
console.log( text.substring(1, 0) ); // aWhen arguments are negative then they are converted to 0.
xxxxxxxxxx1
// index: 0122
var text = "abc";3
4
console.log( text.substring(-1, 3) ); // abc5
console.log( text.substring(-2, 3) ); // abc6
console.log( text.substring(-3, 3) ); // abc7
8
console.log( text.substring(-1, -3) ); // 