Check if string contain an array of keyword

Question

I don't find what I need on internet, or may be I don't use correct words, but here is my problem.

I have a string for exemple: Ok bot, show me the doc of the Foo program.

And there is my keywords: ["bot","doc", "show", "Foo"]

I want that if the string contains 3 keyword or more, my function will return a message for exemple

I have think about

var message = "Ok bot, show me the doc of the Foo program.";
var keywords = ["bot","doc","show","foo"];
if(keywords.indexOf(message) >=3 ){
  console.log('ok I understand');
}

But it not works

Can someone help me please ?

Thank you

Suren Srapyan · Accepted Answer · 2017-12-12 16:57:15Z

2

You are calling the indexOf function, which returns the items index in the array. In your case you are checking message in the array keywords which is logically wrong condition

You can filter the found keywords via Array#filter and String#includes and then check their length.

var message = "Ok bot, show me the doc of the Foo program.";
var keywords = ["bot","doc","show","foo"];

var keywordsFound = keywords.filter(item => message.includes(item));

if(keywordsFound.length >= 3 ) {
  console.log('ok I understand');
}

edited Dec 12, 2017 at 16:57

answered Dec 12, 2017 at 16:45

Suren Srapyan

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2 Comments

Mike Cheel Over a year ago

you should edit your includes link to be this one: developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…

Suren Srapyan Over a year ago

@MikeCheel Thanks

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