Javascript Array 的 Foreach 循环，通过 AJAX 查询获得
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Foreach-loop for Array, which got via AJAX-query
提问by Eugene Shmorgun
I have the JS-code:
我有JS代码：
$("#select_bank").change(function () {
selected_bank = $("#select_bank option:selected").text();
$.ajax({
type: 'POST',
dataType: 'html',
data: {
selectedBank: selected_bank
},
url: '<?= base_url() . 'atm/select_region'; ?>',
success: function (list_regions) {
foreach(keyVar in list_regions) {
alert(list_regions[keyVar]);
}
}
});
});
On callback "succes"s I get the array from server's script - in alert I see the "Array" - so I want to iterate via this array on client-side like I coded above, but when doing I get the error in console - "var keyVar is not defined". As I understand I need to typecast the list_regionsparam as array or some another way to fix it. Please, how to make it better?
Thanks!
在回调“成功”中，我从服务器的脚本中获取数组 - 在警报中我看到“数组” - 所以我想像上面编码的那样在客户端通过这个数组进行迭代，但是当我在控制台中得到错误时 - “未定义 var keyVar”。据我了解，我需要将list_regionsparam类型转换为数组或其他一些方法来修复它。请问怎么做比较好？谢谢！
upd: 
更新：
回答by Florian Bauer
回答by Daniil Ryzhkov
Javascript doesn't have foreachconstruction. Use $.eachmethod of jQuery
Javascript 没有foreach构造。$.eachjQuery的使用方法
回答by Lucas Green
Try this:
尝试这个：
$("#select_bank").change(function(){
// The following line was missing a var declaration,
// Making it an implicit global
var selected_bank = $("#select_bank option:selected").text();
$.ajax({
type:'POST',
dataType:'html',
data: { selectedBank: selected_bank },
url:'<?=base_url().'atm/select_region'; ?>',
success:function(list_regions){
var keyVar;
for(keyVar in list_regions) {
if (list_regions.hasOwnProperty(keyVar)) {
alert(list_regions[keyVar]);
}
}
}
});
});
