Regular Expression to match compound words using only the first word

Question

I am trying to create a regular expression in JS which will match the occurences of box and return the full compound word

Using the string:

the box which is contained within a box-wrap has a box-button

I would like to get:

[box, box-wrap, box-button]

Is this possible to match these words only using the string box ?

This is what I have tried so far but it does not return the results I desire.

http://jsfiddle.net/w860xdme/

var str ='the box which is contained within a box-wrap has a box-button';
var regex = new RegExp('([\w-]*box[\w-]*)', 'g');
document.getElementById('output').innerHTML=str.match(regex);

Answer 1

Try this way:

([\w-]*box[\w-]*)

Regex live here.

---

Requested by comments, here is a working example in javascript:

 function my_search(word, sentence) { var pattern = new RegExp("([\\\\w-]*" + word + "[\\\\w-]*)", "gi"); sentence.replace(pattern, function(match) { document.write(match + "<br>"); // here you can do what do you want return match; }); }; var phrase = "the box which is contained within a box-wrap " + "has a box-button. it is inbox..."; my_search("box", phrase); 

Hope it helps.

Answer 2

我将它扔在那里：

(box[\w-]*)+

Answer 3

You can use this regex in JS:

var w = "box"
var re = new RegExp("\\b" + w + "\\S*");

RegEx Demo

Answer 4

This should work, note the 'W' is upper case.

http://www.w3schools.com/jsref/jsref_obj_regexp.asp

\\Wbox\\W

Answer 5

It looks like you're wanting to use the match with a regex. Match is a string method that will take a regex as an argument and return an array containing matches.

var str = "your string that contains all of the words you're looking for";
var regex = /you(\S)*(?=\s)/g;
var returnedArray = str.match(regex);
//console.log(returnedArray) returns ['you', 'you\'re']