knockout.js(js)代码在IE中出现“意外地调用了方法或属性”的错误

浏览数：19 / 时间：2015年06月09日

var 
CartListViewModel = function 
() {
    var 
self = this;
 
    self.payment = [
                { name: "", value: 1 },
                { name: "", value: 2 },
            ];
 
    self.items = ko.observableArray([]);    // {‘id‘:1,‘data‘:[‘aa‘,‘bb‘]}
 
    self.load = function 
() {
       
 
         var 
data = <%=cartListMap %>;
         
 
        var 
items = new 
Array();
        for 
(var 
i in 
data) {
            var 
dataItem = data[i];
 
            var 
cartItem = new 
CartItemViewModel()
            。。。
 
            items.push(cartItem);
        }
        self.items(items);
    };
 
    self.TotalSum = function(){
        var 
totalsum = 0;
        var 
ilength = this.items().length;
        for(var 
idx = 0; idx < ilength; idx++)
        {
            var 
iItem = this.items()[idx];
            if 
(iItem.selected())
            {
                totalsum = totalsum + iItem.goodsPrice();
            }
        }    
 
        return 
totalsum.toFixed(2);            
    }
 
 
}