RegEx匹配整个单词

Question

I am trying to catch all words that contains " centimeters ", like: 10.50centimeters from this sentence " This product have 10.50centimeters length.. ".

my function:

function findMatchingWords(t, s) {
    var re = new RegExp("\\w*"+s+"\\w*", "g");
    return t.match(re);
}
findMatchingWords('This product have 10.50centimeters length..','centimeters');

but returns only " 50centimeters ". Is not getting the numbers before the dot.

Any help with this please?

Answer 1

Is not getting the numbers before the dot.

\\w doesn't match a dot, it's equivalent to [A-Za-z0-9_] . [\\w.] would (or [A-Za-z0-9_.] ).

var re = new RegExp("[\\w.]*"+s+"\\w*", "g");

Live Example:

 function findMatchingWords(t, s) { var re = new RegExp("[\\\\w.]*"+s+"\\\\w*", "g"); return t.match(re); } console.log(findMatchingWords('This product have 10.50centimeters length..','centimeters')); 

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Side note: You'll want to escape characters with special meaning in s before feeding it to the RegExp constructor. This question's answers have functions to do that.