How to Remove First 7 Characters from String in Javascript
In this tutorial, you will learn how to remove first 7 characters from string in javascript. In any sentence, the first 7 characters play an important role because there is a possibility that it might contain letters, numbers, or special characters. Figuring out the location of first 7 characters does not require much effort.
There are numerous ways to remove the first 7 characters from a string. A string consists of multiple characters and these characters in a string have a 0-based index. To get the rest of the string after the removal of the first 7 characters, we can make use of the substring()
method.
In the following example, we have one global variable that holds a string. Upon click of a button, we will remove the first 7 characters from the string and display the result on the screen. Please have a look over the code example and the steps given below.
HTML & CSS
- We have 3 elements in the HTML file (
div
,button
, andh1
). Thediv
element is just a wrapper for the rest of the elements. - The
innerText
for thebutton
element is“Get”
and for theh1
element, it is“Result”
. - We have done some basic styling using CSS and added the link to our
style.css
stylesheet inside thehead
element. - We have also included our javascript file
script.js
with ascript
tag at the bottom.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <link rel="stylesheet" href="style.css"> <title>Document</title> </head> <body> <div class="container"> <button>Get</button> <h1>Result</h1> </div> <script src="script.js"></script> </body> </html>
.container { text-align: center; } button { margin-top: 10px; padding: 10px 20px; }
Javascript
- We have selected the
button
element andh1
element using thedocument.querySelector()
method and stored them inbtnGet
andoutput
variables respectively. - We have attached a
click
event listener to thebutton
element. - We have a global variable
myString
which holds a string as its value. - In the event handler function, we are calling the
substring()
method and passing 7 as a parameter which is the index number of the eighth character"o"
. As a result, we will get a new string except for the first 7 characters. The new string is stored in theresult
variable. - We are displaying the
result
in theh1
element using theinnerText
property.
let btnGet = document.querySelector("button"); let output = document.querySelector("h1"); let myString = "Hello world"; btnGet.addEventListener("click", () => { let result = myString.substring(7); output.innerText = result; });