Limiting string up to a specified length in JavaScript

JavascriptWeb DevelopmentFront End Technology

Problem

We are required to write a JavaScript function that takes in a string and a number. Our function should return the truncated version of the given string up to the given limit followed by "..." if the result is shorter than the original string otherwise our function should return the same string if nothing was truncated.

Example

Following is the code −

 Live Demo

const str = 'Testing String';
const num = 8;
const limitString = (str = '', num = 1) => {
   const { length: len } = str;
   if(num < len){
      return str.slice(0, num) + '...';
   }else{
      return str;
   };
};
console.log(limitString(str, num));

Output

Following is the console output −

Testing ...
raja
AmitDiwan
Published on 20-Apr-2021 08:17:01
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