How to delete an element from a comma separated string using Javascript

var value = 1,2,3,4,5;

var remove_val = '3';

var separator = ",";

var new_value = value.split(separator);

for(var i = 0 ; i < new_value.length ; i++) {

if(new_value[i] == remove_val) {

new_value.splice(i, 1);

return new_value.join(separator);

}

}