Use the JavaScript String slice() method to extract a substring from a string.Then, use the slice() method to extract the local part of the email starting from the beginning of string up to the character before the sign.The returned value of the indexOf() is used as the second argument of the slice() method. First, use the indexOf() method to locate the sign.Output: john Code language: JavaScript ( javascript ) The following example uses the slice() method to get the local part of an email address: let email = ' ' let localPart = email.slice( 0,email.indexOf( Code language: JavaScript ( javascript ) Output: Code language: CSS ( css ) JavaScript String slice() method practical example The start parameter is a zero-based index at which the method starts the extraction. The slice() method has two optional parameters start and end. The beginIndex is inclusive, that is why the character present at. For example: 'Chaitanya'.substring (2) would return 'aitanya'. Only the beginIndex: String substring(int beginIndex) Returns the substring starting from the specified index beginIndex till the last character of the string. The following shows the syntax of the slice() method: slice(start, end) There are two variants of substring method in Java. The () method extracts a portion of a string and returns it as a substring. Now, Java will start at character two in the string FirstName, and then grab the characters from position 2 right to the end of the string. Introduction to the JavaScript String slice() method This time, we only have 1 number between the round brackets of substring. Summary: in this tutorial, you will learn how to use the JavaScript String slice() method to extract a substring from a string.
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