Question

163

Searching for words in string

rated 0 times [ 170] [ 7] / answers: 1 / hits: 15493 / 7 Years ago, sat, june 17, 2017, 12:00:00

I'm trying to make a function that finds the string that contains all words from an array.

I have tried this:

function multiSearchOr(text, searchWords){

    var searchExp = new RegExp(searchWords.join(|),gi);

    return (searchExp.test(text))?Found!:Not found!;

}



alert(multiSearchOr(Hello my name sam, [Hello, is]))

But this only alert Found when one of the words have been found.

I need it to alert me when all the words are in the string.

An example:

var sentence = I love cake    

var words = [I, cake];

I want the application to alert me when it finds all of the words from the array in the string sentence. Not when it only found one of the words.

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arielle

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1 Year ago

answered 7 Years ago mira · Accepted Answer

If you're interested in using only a single regular expression, then you need to use a positive lookahead when constructing your expression. It will look something like that:

'(?=\b' + word + '\b)'

Given this construction, you can then create your regular expression and test for the match:

function multiSearchOr(text, searchWords){

    var regex = searchWords

        .map(word => (?=.*\b + word + \b))

        .join('');

    var searchExp = new RegExp(regex, gi);

    return (searchExp.test(text))? Found! : Not found!;

}