Delete first character of a string in JavaScript
There are many ways to delete the first character of a string in JavaScript, some of them are discussed below:
Method 1: Using slice() Method: The slice() method extracts the part of a string and returns the extracted part in a new string. If we want to remove the first character of a string then it can be done by specifying the start index from which the string needs to be extracted. We can also slice the last element.
Syntax:
string.slice(startingindex, endingindex)
Example:
<!DOCTYPE html><html> <head> <title> Delete first character of a string </title></head> <body> <p> Click on button to display the extracted part of the string </p> <button onclick="myGeeks()"> Click Here! </button> <p id="GFG"></p> <script> function myGeeks() { var str = "GeeksforGeeks"; var result = str.slice(1); document.getElementById("GFG").innerHTML = result; } </script></body> </html> |
Output:
Before Clicking the button:
After Clicking the button:
Method 2: Using substr() Method: The string.substring() is an inbuilt function in JavaScript which is used to return the part of the given string from start index to end index. Indexing starts from zero (0).
Syntax:
string.substring(Startindex, Endindex)
Example:
<!DOCTYPE html><html> <head> <title> Delete first character of a string </title></head> <body> <p> Click on button to display the extracted part of the string </p> <button onclick="myGeeks()"> Click Here! </button> <p id="GFG"></p> <script> function myGeeks() { var str = "GeeksforGeeks"; var result = str.substr(1); document.getElementById("GFG").innerHTML = result; } </script></body> </html> |
Output:
Before Clicking the button:
After Clicking the button:
Method 3: Using replace() method: The string.replace() function is an inbuilt function in JavaScript which is used to replace a part of the given string with some other string or a regular expression. The original string will remain unchanged.
Syntax:
string.replace(searchvalue, newvalue)
Example:
<!DOCTYPE html><html> <head> <title> Delete first character of a string </title></head> <body> <p> Click on button to display the extracted part of the string </p> <button onclick="myGeeks()"> Click Here! </button> <p id="GFG">GeeksforGeeks</p> <script> function myGeeks() { var str = document.getElementById("GFG").innerHTML; var res = str.replace("GeeksforGeeks", "eeksforGeeks"); document.getElementById("GFG").innerHTML = res; } </script></body> </html> |
Output:
Before Clicking the button:
After Clicking the button:
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