regex - javascript split and match not working (Parse scalable search) -

i trying implement scaleable search per parse docs.

below code using pretty lifted post.

var _ = require("underscore");  parse.cloud.beforesave("exercises", function (request, response) {     var exercise = request.object;      console.log("log1" + exercise.get("exercisename"));      var tolowercase = function (w) {         return w.tolowercase();     };      var words = exercise.get("exercisename").split(/b/);     words = _.map(words, tolowercase);      console.log("log 2" + words);      var stopwords = ["the", "in", "and", "with", "on"]     words = _.filter(words, function (w) {         return w.match(/^w+$/) && !_.contains(stopwords, w);     });      console.log("log 3" + words);      var hashtags = exercise.get("exercisename").match(/#.+?b/g);     hashtags = _.map(hashtags, tolowercase);      exercise.set("words", words);     exercise.set("hashtags", hashtags);     response.success(); }); 

here output @ each log.

log 1: squats dumbells

log 2: squats dumbells

log 3:

it seems following line:

words = _.filter(words, function(w) { return w.match(/^w+$/) && ! _.contains(stopwords, w); });

nothing returned. in log 2 expected given ["squats", "with","dumbells"]

my hashtags variable empty, there issue match in code?

here workding jsfiddle log statements

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you don't need regex inside filter function. if want check w word, missing \ right before w in regex. works expected:

var stopwords = ["the", "in", "and", "with", "on"];  words = _.filter(words, function(w) {     return w.match(/^\w+$/) && ! _.contains(stopwords, w);     //               ^ 1 }); console.log(words);    // [ "squats", "dumbells" ] 

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the reason hashtags empty because have no hashtags in exercise.get("exercisename"). also, have words in words array. hashtags checking if first character #:

var hashtags = _.filter(words, function(word) {     return word.indexof("#") === 0; });