How to use jsreplace function

The usage of jsreplace function is: 1. Use string to replace string; 2. Use regular expression to replace; 3. Use global matching to perform multiple replacements.

In JavaScript, the replace() function is used to replace one or more matches in a string with a new substring or a regular expression. substring. The basic syntax is as follows:

string.replace(searchValue, newValue);

where string is the original string to be replaced, searchValue can be a string or a regular expression, Used to match the substring to be replaced, newValue is the new value to replace.

Example 1: Replace string using string

let str = "Hello, World!";
let newStr = str.replace("World", "John");
console.log(newStr); // 输出: Hello, John!

Example 2: Replace using regular expression

let str = "Hello, World!";
let newStr = str.replace(/Hello/, "Hi");
console.log(newStr); // 输出: Hi, World!

Example 3: Use global match to perform multiple replacement

let str = "Apple, Orange, Banana, Apple";
let newStr = str.replace(/Apple/g, "Mango");
console.log(newStr); // 输出: Mango, Orange, Banana, Mango

It should be noted that the replace() function does not change the original string, but returns a new string. If you want to change the original string, you can assign the replaced value to the original string variable.

let str = "Hello, World!";
str = str.replace("World", "John");
console.log(str); // 输出: Hello, John!

In general, the replace() function is a commonly used function in JavaScript to replace the content in a string. You can use strings or regular expressions to perform replacement operations.

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