循环遍历 json 数组 jquery
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loop through json array jquery
提问by dzm
I'm trying to loop through this to get the 'name' values. This is what I currently have, but it doesn't seem to be working, tried a few others from what was posted here but nothing seemed to work.
我正在尝试遍历它以获取“名称”值。这是我目前拥有的，但它似乎不起作用，从这里发布的内容中尝试了其他一些，但似乎没有任何效果。
$.get("/get_names", {campaign_id: $('select[name="id"]').val()},
function(data){
$.each(data, function(i, item) {
alert(item);
});
}
);
Json being returned:
返回 Json：
[
{
"name":"age"
},
{
"name":"asdf"
},
{
"name":"drivername"
},
{
"name":"drivers"
},
{
"name":"firstname"
},
{
"name":"gender"
},
{
"name":"lastname"
},
{
"name":"make"
},
{
"name":"model"
},
{
"name":"vehicles"
},
{
"name":"year"
}
]
I've tried using:
我试过使用：
item.name
item[i].name
Any suggestions?
有什么建议？
Thank you!
谢谢！
回答by Rob W
You have to parse the string as JSON (data[0] == "["is an indication that datais actually a string, not an object):
您必须将字符串解析为 JSON（data[0] == "["表示data实际上是字符串，而不是对象）：
data = $.parseJSON(data);
$.each(data, function(i, item) {
alert(item);
});
回答by Kevin B
you could also change from the .get()method to the .getJSON()method, jQuery will then parse the string returned as datato a javascript object and/or array that you can then reference like any other javascript object/array.
您也可以从.get()方法更改为.getJSON()方法，然后 jQuery 会将返回的字符串解析为datajavascript 对象和/或数组，然后您可以像任何其他 javascript 对象/数组一样引用它。
using your code above, if you changed .getto .getJSON, you should get an alert of [object Object]for each element in the array. If you changed the alert to alert(item.name)you will get the names.
使用上面的代码，如果您更改.get为.getJSON，您应该会收到[object Object]数组中每个元素的警报。如果您将警报更改为alert(item.name)您将获得名称。
回答by Royi Namir
I dont think youre returning json object from server. just a string.
我不认为你是从服务器返回 json 对象。只是一个字符串。
you need the dataType of the return object to be json
您需要返回对象的数据类型为 json
