Extract substring from string in JavaScript; Through this tutorial, i am going to show how to extract substring from string in javascript using slice()
method and without regex.
JavaScript slice() String: Extract Substring from String
The js stringslice()
method extracts a part of a string (substring) and returns a new string.
Syntax of JavaScript slice method
See the following syntax of javaScript slice()
method; as shown below:
let substr = str.slice(begin [, end ]);
Explanation of above given slice method syntax; as follow:
- The
begin
is a position where to start the extraction. - The
end
is a position where to end the extraction.
Example 1 -javascript extract substring from string with start index
Take an example using javaScriptslice()
method to extract part of string from a given string with beingIndex:
let str = 'Hello JavaScript' let newStr = str.slice(5); console.log(newStr); // JavaScript
Example 2 -javascript extract substring from string with start index and end Index
The following example shows uses of slice()
method, to extract part of string from a given string with beingIndex and endIndex:
let str = 'Hello JavaScript' let newStr = str.slice(0, 5); console.log(newStr); // Hello
Conclusion
In this tuorial, you have learned all about the JavaScript String slice()
method and using this method extract a substring from a given string.