JavaScript: Truncate a string up to a specified length
JavaScript fundamental (ES6 Syntax): Exercise-117 with Solution
Write a JavaScript program to truncate a string up to a specified length.
Note: Determine if the string's length is greater than num. Return the string truncated to the desired length, with '...' appended to the end or the original string.
- Determine if String.prototype.length is greater than num.
- Return the string truncated to the desired length, with '...' appended to the end or the original string.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const truncateString = (str, num) =>
str.length > num ? str.slice(0, num > 3 ? num - 3 : num) + '...' : str;
console.log(truncateString('boomerang', 7));
Sample Output:
boom...
Pictorial Presentation:
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-117-1 by w3resource (@w3resource) on CodePen.
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Previous: Write a JavaScript program to check if the predicate (second argument) is truthy on all elements of a collection (first argument).
Next: Write a JavaScript program to apply a function against an accumulator and each key in the object (from left to right).
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