Remove the First 2, 3, 4, N Characters from the string in Javascript

Remove the First 2, 3, 4, N Characters from the string in Javascript

In js, there are multiple functions to remove the first 2, 3, 4, or N characters from a string, such as substring(), replace(), slice(), etc. Here we will show you some approaches with these functions to remove 2 3 4 N characters from a string in javascript.

How to Remove the First 2, 3, 4, N Characters from the string in javaScript

To remove the first 2,3,4, N characters from a string in js, you can use the following js function:

  • Function 1: Using substring() Function
  • Function 2: Using slice() Function
  • Function 3: Remove the First 2,3,4,N Characters from string using replace() Function

Function 1: Using substring() Function

The substring method helps us to remove the first N characters from a string based on the start index and end index. And it returns the original string.

To remove the first 2,3,4, N characters from a string using the javascript substring() method, Here is an example:

// example string
let exStr = "Hello, World!";

// Remove the first 2 characters using substring
let removeFirst2CharString = exStr.substring(2);

// Remove the first 3 characters using substring
let removeFirst3CharString = exStr.substring(3);

// Remove the first 4 characters using substring
let removeFirst4CharString = exStr.substring(4);

console.log("Original String:", exStr);
console.log("Modified String (Remove first 2):", removeFirst2CharString);
console.log("Modified String (Remove first 3):", removeFirst3CharString);
console.log("Modified String (Remove first 4):", removeFirst4CharString);

Function 2: Using slice() Function

The slice method extracts a portion of the string from a given string based on start and end index without changing the original string.

Here is an example of removing the first 2,3,4, and n characters from a string using slice in javascript, you can use it like this:

// example string
let exStr = "Hello, World!";

// Remove the first 2 characters using slice
let removeFirst2CharString = exStr.slice(2);

// Remove the first 3 characters using slice
let removeFirst3CharString = exStr.slice(3);

// Remove the first 4 characters using slice
let removeFirst4CharString = exStr.slice(4);

console.log("Original String:", exStr);
console.log("Modified String (Remove first 2):", removeFirst2CharString);
console.log("Modified String (Remove first 3):", removeFirst3CharString);
console.log("Modified String (Remove first 4):", removeFirst4CharString);

Function 3: Remove the First 2,3,4,N Characters from string using replace() Function

The replace() method in JavaScript helps you replace all instances of one part of a string with another. You can use this to remove the first N characters of a string by replacing them with nothing (an empty string).

For example, if you want to remove the first 2,3,4, and n characters from string in javascript, you can use str.replace(/^.{n}/, ""). This code replaces the first n characters at the first of the string with an empty string, effectively removing them.

// example string
let givenStr = "Hello, World!";

// Remove the first 2 characters using replace
let removeFirst2 = givenStr.replace(/^.{2}/, "");

// Remove the first 3 characters using replace
let removeFirst3 = givenStr.replace(/^.{3}/, "");

// Remove the first 4 characters using replace
let removeFirst4 = givenStr.replace(/^.{4}/, "");

console.log("Original String:", givenStr);
console.log("Modified String (Remove first 2):", removeFirst2);
console.log("Modified String (Remove first 3):", removeFirst3);
console.log("Modified String (Remove first 4):", removeFirst4);

Conclusion

These methods provide different ways to achieve the same result. Choose the one that fits your use case or coding preference.

https://youtu.be/4kVr_iopmJU

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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