You can use the substring or slice method to Get the first n characters of a string in JavaScript. Where n could be any number 1,2,3… so on.
Get first n characters of string JavaScript Examples
HTML examples code: Let’s get the first 4 char from a string in JS.
Using substring() Method:
<!DOCTYPE HTML>
<html>
<body>
<script>
var str = "HELLO WORLD";
var res = str.substring(0, 4);
alert(res);
</script>
</body>
</html> Using slice() Method:
<!DOCTYPE HTML>
<html>
<body>
<script>
var str = "HELLO WORLD";
var res = str.slice(0,4);
alert(res);
</script>
</body>
</html> Output: Result will be the same because the given string and get number char length is the same.
Do comment if you have any doubts and suggestions on this JS topic.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version