JavaScript String length
Syntax & Examples
String.length property
The `length` property of String object in JavaScript returns the length of the string. It is read-only.
Syntax of String.length
The syntax of String.length property is:
lengthThis length property of String reflects the length of the string. Read-only.
Return Type
String.length returns value of type int.
✐ Examples
1 Length of a string with spaces
In this example,
We declare a string variable str with the value 'Hello World'. The length property is then used to get the length of the string which includes spaces.
JavaScript Program
let str = 'Hello World';
console.log(str.length);Output
11
2 Length of a string with numbers
In this example,
We declare a string variable str with the value '12345'. The length property is then used to get the length of the string.
JavaScript Program
let str = '12345';
console.log(str.length);Output
5
3 Length of an empty string
In this example,
We declare an empty string str. The length property is then used to get the length of the string, which is 0.
JavaScript Program
let str = ''; // Empty string
console.log(str.length);Output
0
Summary
In this JavaScript tutorial, we learned about length property of String: the syntax and few working examples with output and detailed explanation for each example.