如何在IE7/IE8中优化这个JSON/JQuery/Javascript函数?
我使用这个函数来解析这个json数据,但是我发现这个函数在IE7中非常慢,在IE8中稍微慢一点 基本上,第一个列表框生成主产品列表,选择主列表后,它将填充第二个列表 这是我的数据:如何在IE7/IE8中优化这个JSON/JQuery/Javascript函数?,jquery,json,optimization,internet-explorer-7,Jquery,Json,Optimization,Internet Explorer 7,我使用这个函数来解析这个json数据,但是我发现这个函数在IE7中非常慢,在IE8中稍微慢一点 基本上,第一个列表框生成主产品列表,选择主列表后,它将填充第二个列表 这是我的数据: [{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":15913,"ProductName"
[{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":15913,"ProductName":"Creative Xmod","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":15913,"ProductName":"Creative Xmod","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":18094,"ProductName":"Sound Blaster Wireless Receiver","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":16185,"ProductName":"Xdock Wireless","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":16186,"ProductName":"Xmod Wireless","ProductServiceLifeId":1}]
这些是我正在使用的函数:
//Three Product Panes function
function populateMainPane() {
$.getJSON('/Home/ThreePaneProductData/', function(data) {
products = data;
alert(JSON.stringify(products));
var prodCategory = {};
for (i = 0; i < products.length; i++) {
prodCategory[products[i].ProductCategoryId] = products[i].ProductCategoryName;
} //end for
//take only unique product category to be used
var id = 0;
for (id in prodCategory) {
if (prodCategory.hasOwnProperty(id)) {
$(".LBox1").append("<option value='" + id + "'>" + prodCategory[id] + "</option>");
//alert(prodCategory[id]);
}
}
var url = document.location.href;
var parms = url.substring(url.indexOf("?") + 1).split("&");
for (var i = 0; i < parms.length; i++) {
var parm = parms[i].split("=");
if (parm[0].toLowerCase() == "pid") {
$(".PanelProductReg").show();
var nProductIds = parm[1].split(",");
for (var k = 0; k < nProductIds.length; k++) {
var nProductId = parseInt(nProductIds[k], 10);
for (var j = 0; j < products.length; j++) {
if (nProductId == parseInt(products[j].ProductId, 10)) {
addProductRow(nProductId, products[j].ProductName);
j = products.length;
}
} //end for
}
}
}
});
} //end function
function populateSubCategoryPane() {
var subCategory = {};
for (var i = 0; i < products.length; i++) {
if (products[i].ProductCategoryId == $('.LBox1').val())
subCategory[products[i].ProductSubCategoryId] = products[i].ProductSubCategoryName;
} //end for
//clear off the list box first
$(".LBox2").html("");
var id = 0;
for (id in subCategory) {
if (subCategory.hasOwnProperty(id)) {
$(".LBox2").append("<option value='" + id + "'>" + subCategory[id] + "</option>");
//alert(prodCategory[id]);
}
}
} //end function
//三个产品窗格函数
函数populateMainPane(){
$.getJSON('/Home/ThreePaneProductData/',函数(数据){
产品=数据;
警报(JSON.stringify(产品));
var prodCategory={};
对于(i=0;i
我能做些什么来优化它吗?或者这是一个已知的浏览器问题吗?我唯一建议您的是,在之前将DOM元素拉出(缓存它们) 你在附加任何东西。比如:
var LBox = $(".LBox1"),
LBox_parent = LBox.parent();
LBox.detach();
for (id in prodCategory) {
if (prodCategory.hasOwnProperty(id)) {
LBox.append("<option value='" + id + "'>" + prodCategory[id] + "</option>");
//alert(prodCategory[id]);
}
}
LBox_parent.append(LBox);
var LBox=$(“.LBox1”),
LBox_parent=LBox.parent();
LBox.detach();
用于(prodCategory中的id){
if(prodCategory.hasOwnProperty(id)){
LBox.append(“+prodCategory[id]+”);
//警报(prodCategory[id]);
}
}
LBox\u父项追加(LBox);
无论您在哪里进行DOM操作,这都会极大地提高性能。我唯一建议您的是,在操作之前将DOM元素拉出(缓存) 你在附加任何东西。比如:
var LBox = $(".LBox1"),
LBox_parent = LBox.parent();
LBox.detach();
for (id in prodCategory) {
if (prodCategory.hasOwnProperty(id)) {
LBox.append("<option value='" + id + "'>" + prodCategory[id] + "</option>");
//alert(prodCategory[id]);
}
}
LBox_parent.append(LBox);
var LBox=$(“.LBox1”),
LBox_parent=LBox.parent();
LBox.detach();
用于(prodCategory中的id){
if(prodCategory.hasOwnProperty(id)){
LBox.append(“+prodCategory[id]+”);
//警报(prodCategory[id]);
}
}
LBox\u父项追加(LBox);
无论您在哪里进行DOM操作,这都会极大地提高性能。@jandy,基准测试的结果证明了这一点。缓存元素(但不分离它)是最快的
@jandy,基准测试的结果证明了这一点。缓存元素(但不分离它)是最快的
Alrity兄弟。但是如何将json转换为xml呢?我想把所有的东西都转换成一大块。。。然后将它们保存在html中的div中,然后稍后再将它们缝合在一起,有点像旧的asp方式?alritey bro。但是如何将json转换为xml呢?我想把所有的东西都转换成一大块。。。将它们保存在html中的div中,然后稍后将它们缝合在一起,有点像旧的asp方式?