我需要在Jquery中找到可以在IE8和真实浏览器中运行的东西。我是Jquery的新手,以下是我在现代浏览器中运行的代码:
$('#FIELD_'+office_id).on('change',function(){
offices = $(this).val();
for(var i=0; i<=Object.keys(southland.address).length;i++){
if(offices == Object.keys(southland.address)[i]){
address = southland.address[offices]Object.keys(southland.address[offices])[0]];
}
}
其中southland.address来自外部数组。这在Chrome,IE10和FF中是完美的,我能为IE8做些什么吗?
答案 0 :(得分:10)
要在旧版浏览器中支持Object.keys,您可以使用以下代码段:
if (!Object.keys) {
Object.keys = (function () {
var hasOwnProperty = Object.prototype.hasOwnProperty,
hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'),
dontEnums = [
'toString',
'toLocaleString',
'valueOf',
'hasOwnProperty',
'isPrototypeOf',
'propertyIsEnumerable',
'constructor'
],
dontEnumsLength = dontEnums.length;
return function (obj) {
if (typeof obj !== 'object' && typeof obj !== 'function' || obj === null) throw new TypeError('Object.keys called on non-object');
var result = [];
for (var prop in obj) {
if (hasOwnProperty.call(obj, prop)) result.push(prop);
}
if (hasDontEnumBug) {
for (var i=0; i < dontEnumsLength; i++) {
if (hasOwnProperty.call(obj, dontEnums[i])) result.push(dontEnums[i]);
}
}
return result;
};
})();
}
或此polyfill(包括其他垫片):