How do I declare and use dynamic variables in JavaScript?

Question

Suppose I need to declare a JavaScript variable based on a counter, how do I do so?

var pageNumber = 1;
var \"text\"+pageNumber;

The above

Answer 1

You could also wrap your counter in an object:

var PageNumber = (function() {
  var value = 0;
  return {
   getVal: function(){return value;},
   incr: function(val){
            value += val || 1;
            this['text'+value]=true /*or some value*/;
            return this;
         }
   };
})();

alert(PageNumber.incr().incr().text2); //=>true
alert(PageNumber['text'+PageNumber.getVal()]) /==> true