I want to truncate a text or line with ellipsis using JavaScript [closed]

Question

I'm looking for a simple script which can truncate a string with ellipsis (...)

I want to truncate something like 'this is a very long string' to 'this is a ve...'

I don't want to use CSS or PHP.

Answer 1

function truncate(input) {    if (input.length > 5) {       return input.substring(0, 5) + '...';    }    return input; }; 

or in ES6

const truncate = (input) => input.length > 5 ? `${input.substring(0, 5)}...` : input; 

Answer 2

KooiInc has a good answer to this. To summarise:

String.prototype.trunc =        function(n){           return this.substr(0,n-1)+(this.length>n?'…':'');       }; 

Now you can do:

var s = 'not very long'; s.trunc(25); //=> not very long s.trunc(5); //=> not... 

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And if you prefer it as a function, as per @AlienLifeForm's comment:

function truncateWithEllipses(text, max)  {     return text.substr(0,max-1)+(text.length>max?'…':'');  } 

Full credit goes to KooiInc for this.