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JavaScript: Get a part of string after a specified character

JavaScript String: Exercise-22 with Solution

Write a JavaScript function to get a part of string after a specified character.

Test Data:
console.log(subStrAfterChars('w3resource: JavaScript Exercises', ':','a'));
console.log(subStrAfterChars('w3resource: JavaScript Exercises', 'E','b'));
Output:
"w3resource"
"xercises"

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Write a JavaScript function to get a part of string after a specified character.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function subStrAfterChars(str, char, pos)
{
  if(pos=='b')
   return str.substring(str.indexOf(char) + 1);
  else if(pos=='a') 
   return str.substring(0, str.indexOf(char));
  else
  return str;  
}

console.log(subStrAfterChars('w3resource: JavaScript Exercises', ':','a'));

console.log(subStrAfterChars('w3resource: JavaScript Exercises', 'E','b'));

Sample Output:

w3resource
xercises

Flowchart:

Flowchart: JavaScript- Get a part of string after a specified character

Live Demo:

See the Pen JavaScript Get a part of string after a specified character - string-ex-22 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript function to repeat a string a specified times.
Next: Write a JavaScript function to strip leading and trailing spaces from a string.

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JavaScript: Tips of the Day

How to check whether a string contains a substring in JavaScript?

ECMAScript 6 introduced String.prototype.includes:

const string = "foo";
const substring = "oo";

console.log(string.includes(substring));

includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found: 

var string = "foo";
var substring = "oo";

console.log(string.indexOf(substring) !== -1);

Ref: https://bit.ly/3fFFgZv