The replace() method in JavaScript is used to search a string for a value or any expression and replace it with the new value provided in the parameters. The original string is not changed by this method.
Syntax:
string.replace(searchVal,newVal)
Parameter: This method accepts two parameters.
- searchVal: It is the value that we want to replace in the existing string
- newVal: It is the new value that is to be put in the place of searchVal.
Return Value: This method returns a new string where the desired values have been replaced.
Example 1: In this example, we will use the replace() method to replace a character from the original string but the replace method here does not replace the characters which are in lowercase.
Javascript
let stringReplace = "Geeks for geeks is a great platform to learn Javascript";
let result = stringReplace.replace(/Geeks/, "GFG");
console.log('New string: ' + result);
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Output
New string: GFG for geeks is a great platform to learn Javascript
Example 2: In this example, the replace() method replaces the words completely irrespective of their case.
Javascript
let stringReplace = "Geeks for Geeks is a great platform to learn Javascript";
let result = stringReplace.replace(/Geeks/gi, "GFG");
console.log('New string: ' + result);
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Output
New string: GFG for GFG is a great platform to learn Javascript