Владислав Воронцов

function checkString(str1, str2) {
var string1 = str1.replace(/ /g,''),
string2 = str2.replace(/ /g,''); // remove whitespaces

var sort1 = string1.split('').sort().join(''), // sort
sort2 = string2.split('').sort().join('');

return sort1 === sort2; // check strings
}

console.log(checkString('clockwise', 'owe clicks'));
console.log(checkString('clockwise', 'clockwork'));