angularjs - Trim string to a certain word count -

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i have description in template

<p>{{data.description}}</p>

i want trim description word number, first 20 words. have seen many filters trim characters. causes last word break in cases.

you need split description string words, using spaces, count it:

app.filter('words', function () {   return function (input, words) {     if (isnan(words)) {       return input;     }     if (words <= 0) {       return '';     }     if (input) {       var inputwords = input.split(/\s+/);       if (inputwords.length > words) {         input = inputwords.slice(0, words).join(' ') + '\u2026';       }     }     return input;   }; });


first check if parameter number, i'm checking if description longer what trim at, , trim rest. , in view:

{{data.description | words:250}}

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