In the example above, the word ‘ web’ is the pattern to be replaced. Expected output: Hello my name is Don and I am a software developer The first example below demonstrates the most basic usage of the method: const str = 'Hello my name is Don and I am a web developer' Ĭonst res = str.replace('web', 'software') () Examplesīelow are a few examples that demonstrate the functionality of the () method. When newValue is a function, it will be invoked for each match in the string (see the relevant section below). This can be either a String or a function. newValue: The value to replace the specified pattern with.If the pattern is a String, only the first matching portion of the string is replaced – other instances of the pattern in the string will not be affected. This can be either a String or a regular expression. SyntaxĬonst newStr = str.replace( pattern, newValue) This means that a new string is created in memory for the return value of replace().

Home > Tutorials > JavaScript > How to Use the String.prototype replace Method in JavaScript JavaScript - How to Use the String.prototype replace Method in JavaScript The replace() method operates on a String, returning a new string with the specified changes.

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