To remove the last 3 characters from a string using JavaScript, we have three methods: using the splice() method, using the substring() method, or using the replace() method. Check out the details below to get more information.
Remove the last 3 characters from a string using JavaScript
Using the slice() method
Removing the last 3 characters from a string using JavaScript is standard programming that programmers have to do. To remove the last three characters from a string in Javascript, we can easily use the slice() method. It is already built-in function in Javascript.
Syntax:
array.slice(start, end)
Parameters:
- start: start position. The default is 0.
- end: end position. Default is the last element.
Return value: the return value is a new array containing the selected elements.
Code example:
In this example, we will create a newString to get the value of the myString after using the splice() method to remove the last 3 elements.
Example:
var myString = 'LearnShareIT123';
console.log("myString: ",myString);
//we can use the slice method by using 0 and -3 indexes
var newString = myString.slice(0, -3);
console.log("After removing the last 3 elements in MyString: ",newString);Output
myString: LearnShareIT123
After removing the last 3 elements in MyString: LearnShareITUsing the substring() method
The other simple way to remove the last 3 characters from a string is to use the subString() method.
Syntax:
array.substring(start, end)
Parameters:
- start: start position. The first character is at index 0.
- end: end position (up to, but not including).
Return value: the return value is a string containing the extracted characters.
Example:
var myString = 'LearnShareIT123';
console.log("myString: ",myString);
//we can use the substring() method to remove the last 3 characters of myString
var newString = myString.substring(0, myString.length - 3);
console.log("After removing the last 3 elements in MyString: ",newString);Output
myString: LearnShareIT123
After removing the last 3 elements in MyString: LearnShareITUsing the replace() method
There is another method that allows replacing all characters that match the expression condition.
Syntax:
string.replace(searchValue, newValue)
Parameters:
- searchValue: The value, or regular expression, to search for.
- newValue: The new value.
Return value: the return value is a string where the specified values have been replaced.
Example:
var myString = 'LearnShareIT123';
console.log("myString: ",myString);
//we use the regular expression to get the last 3 characters and replace with ''
var newString = myString.replace(/.{0,3}$/, '');
console.log("After removing the last 3 elements in MyString: ",newString);Output
myString: LearnShareIT123
After removing the last 3 elements in MyString: LearnShareITSummary
In this tutorial, we have explained how to remove the last 3 characters from a string using JavaScript. We always hope this tutorial is helpful to you. Leave your comment here if you have any questions or comments to improve the article. Thanks for reading!
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My name is Fred Hall. My hobby is studying programming languages, which I would like to share with you. Please do not hesitate to contact me if you are having problems learning the computer languages Java, JavaScript, C, C#, Perl, or Python. I will respond to all of your inquiries.
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