我正在尝试这个JQuery代码：
val = $(this).val();
var data = {
"action": "test"
};
data = $(this).serialize() + "&" + $.param(data);
$.ajax({
type: "POST",
dataType: "json",
url: "?getCustomer=1&sequence="+val+"",
data: data,
success: function(data) {
alert(data["sequence"]);
}
});
但是CCD_ 1正在返回CCD_ 2
如果我检查URL（?getCustomer=1&sequence=4），我会返回以下信息：
[{"sequence":"53"}]
因此序列值定义为
这就是控制台中显示的内容：
[Object]0: Objectsequence: "112"__proto__: Objectlength: 1__proto__: Array[0]concat: concat()constructor: Array()copyWithin: copyWithin()entries: entries()every: every()fill: fill()filter: filter()find: find()findIndex: findIndex()forEach: forEach()indexOf: indexOf()join: join()keys: keys()lastIndexOf: lastIndexOf()length: 0map: map()pop: pop()push: push()reduce: reduce()reduceRight: reduceRight()reverse: reverse()shift: shift()slice: slice()some: some()sort: sort()splice: splice()toLocaleString: toLocaleString()toString: toString()unshift: unshift()Symbol(Symbol.iterator): values()Symbol(Symbol.unscopables): Object__proto__: Object
您误解了json。更改
alert(data["sequence"]);
带
alert(data[0]["sequence"]);
或更好的
alert(data[0].sequence );
[{"sequence":"53"}]是一个数组，其第一个元素是具有序列成员的对象。你需要alert(data[0]['sequence'])。