String manipulation in Javascript - issue with whitespace -

anybody have advice on following problem? below code. don't know how make program account spaces. thanks!

have function abcheck(str) take str parameter being passed , return string true if characters , b separated 3 places anywhere in string @ least once (ie. "lane borrowed" result in true because there 3 characters between , b). otherwise return string false.

function abcheck(str){    (var = 0; < str.length; i++) {       if (str.charat(i) === "a"){         if (str.charat(i+3) === "b") {           return true;         }       }    }    return false; } 

you might have @ regular expressions. here's same function regular expression (it should work, haven't tested yet):

function abcheck(str) {    return str.replace(" ","").match(/a([\w\w]{2}b)/g) != null; } 

jsfiddle

does work you?

also have at: regular expressions - w3c , replace()