Syntax:
Replace String in JavaScript with Examples
In this tutorial, we will discuss a few examples of replacing strings in Javascript. Let’s try some examples:
Here is the first example to initialize a text in a variable, then replace it with another text. let str = “Hello World!” let result = str.replace(“World”, “TecAdmin”) console.log(result)1234let str = “Hello World!“let result = str.replace(“World”, “TecAdmin”) console.log(result)Run the above example and see the results. Thanks to playcode.io that help me to run javascript online.Replace string in javascript What happens if a given string is found multiple times. In that case, the replace() function will replace the first occurrence of the given string. let str = “Mr Bean has a green Apple and a Red Apple” let result = str.replace(“Apple”, “Strawberries”) console.log(result)12345let str = “Mr Bean has a green Apple and a Red Apple” let result = str.replace(“Apple”, “Strawberries”) console.log(result)Execute the above code and see the results:Replace first matching string in javascriptThe result clearly shows that the first occurrence is replaced with a new string, but the second occurrence is not replaced. So, how can I replace all the occurrences of a given string? Let’s check the next example: We can also define the regular expression and the function will replace all occurrences matching that regular expression.See the below example, where we defined a regular expression to replace string globally. let str = “Mr Bean has a green Apple and a red Apple” const regex = “/Apple/ig” let result = str.replace(“Apple”, “Strawberries”) console.log(result)123456let str = “Mr Bean has a green Apple and a red Apple” const regex = “/Apple/ig"let result = str.replace(“Apple”, “Strawberries”) console.log(result)Run the above example and see the results.Replace string with regular expression in JavaScript Basically, the regular expression is used to match patterns. To replace all occurrences of any string, we can use replaceAll() function.The below example uses the replaceAll() function in javascript. let str = “Mr Bean has a green Apple and a red Apple” let result = str.replaceAll(“Apple”, “Strawberries”) console.log(result)12345let str = “Mr Bean has a green Apple and a red Apple” let result = str.replaceAll(“Apple”, “Strawberries”) console.log(result)Run the above code and see the results.Replace all matching strings in JavaScript
Wrap Up
In this tutorial, we have discussed a few examples to replace a string in javascript.
Run the above example and see the results. Thanks to playcode.io that help me to run javascript online.
Execute the above code and see the results: The result clearly shows that the first occurrence is replaced with a new string, but the second occurrence is not replaced. So, how can I replace all the occurrences of a given string? Let’s check the next example:
Run the above example and see the results.
Run the above code and see the results.
