How to delete substring in es6

Two methods to delete substrings: 1. Use replace() to remove the first substring that appears in the string. The syntax is "string object.replace("substring value","")" ;2. Use replaceAll() to remove all substrings, the syntax is "string object.replaceAll("substring value","")".

The operating environment of this tutorial: Windows 7 system, ECMAScript version 6, Dell G3 computer.

How to delete substrings in a string in es6

1. Use the replace() function

replace() method is used to replace some characters in a string with a substring of other characters.

The specified substring can be deleted when the replacement value is a null character.

var str = "Hello world!";
var n=str.replace("Hello","");
console.log(n);

replace() function only replaces the first matching substring:

var str="Visit Microsoft! Visit Microsoft!";
var n=str.replace("Microsoft","");
console.log(n);

2 , use the replaceAll() function

replaceAll() method is used to replace some characters with other characters in a string, or replace a substring that matches a regular expression. This function will replace all The matched substring.

Similarly, when the replacement value is a null character, the specified substring can be deleted.

var str = "Hello world!";
var n=str.replaceAll("world","");
console.log(n);

The replaceAll() function will replace all matching substrings:

var str="Visit Microsoft! Visit Microsoft!";
var n=str.replaceAll("Microsoft","");
console.log(n);

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