SCRIPT5039: Redeclaration of const property using IE9

问题

I am optimizing my website across IE browsers. Everything works fine except for IE9.

I have a function similar to this one:

 var history = new Array();


 function loadPage(page, parameters) {

    $(".dynamic_load").fadeOut(400, function(){

    $(this).fadeIn(400).html("loading").load(page, parameters,
    function(response){
    $(".dynamic_load").html(response).show();  });

                if (history.length > 5) {
                    history.shift();
                } 
                history.push(page); 

                                          });

 }

and I am getting an error SCRIPT5039: Redeclaration of const property , which indicates on line

 var history = new Array();

What does it mean? I haven't declared it anywhere else. It is just a global array.

回答1:

It is probably conflicting with window.history. Rename it to something else and see if the error goes away.

回答2:

Btw: Using screen as variable name in IE9 causes the same issue.

来源：https://stackoverflow.com/questions/9676882/script5039-redeclaration-of-const-property-using-ie9