JavaScript: Get a part of string after a specified character

Last update on May 30 2022 10:00:34 (UTC/GMT +8 hours)

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:

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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Next: Write a JavaScript function to strip leading and trailing spaces from a string.

JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());

Ref: https://bit.ly/2BXbp04