JavaScript extract substring from a string; Through this tutorial, i am going to show you how to extract substring from string in javaScript without using regex.
And as well as, how to extract a substring from a string with using start and end index in javascript.
JavaScript Extract Substring from a String
You can use string.substring() method to extract the substring from a string in javaScript.
Note that:- The JavaScript string.substring()
method returns the new sub string from a given string, the basis of the provided index.
Syntax of JavaScript substring()
method
See the following syntax of javaScript substring() method; which is used to extract substring from a string:
str.substring(indexA [, indexB])
Parameters of javaScriptstring.substring()
This method takes two parameters: indexX
and indexY
:
- The
indexX
is a position where to start the extraction. - The
indexY
is a position where to end the extraction.
Examples 1 – Extracting a substring from the starting of the string
Take an example for extract a substring from the between two indexes of given string using substring() method; as shown below:
let string = 'Hello, Programmer'; let substring = string.substring(0,4); console.log(substring);
Output:
Hello
Example 2 – Extract a substring from the end of a string
Take an simple example for extract a substring from the end of a string in javaScript; as shown below:
let string = 'Hello, Programmer'; let substring = string.substring(6); console.log(substring);
Output:
Programmer
Conclusion
Extract a substring from a string in javascript; Through this tutorial, you have learned how to extract a substring from a string in javascript using string.substring()
method.