Question

I have this code:

replaceAny('this','that',string);
if(val!="")

the replaceAny function looks like this:

function replaceAny(first,second,ele) {
  var val = ele.replace(first,second);
  alert(val);
  return val;
}

But then after running the replaceAny function (and the alert shows the right value, the if condition tells me that the variable val is not set, why?!

Answer 1

You are not using the return value from the function correctly. This is something like what you want

function replaceAny(first,second,ele) {
  return ele.replace(first,second);
}

var val = replaceAny('this','that',string);
if(val!=""){
  //something, something darkside
}