ajax解析json字符串

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1、  json.forEach((item) => {
            for (var key in item) {
                if (item[key] instanceof Array) {
                    console.log(key + "是Array类型,数据为：" + JSON.stringify(item[key]))
                } else {
                    if (typeof (item[key]) == "object") {
                        console.log(key + "是Object类型,数据为：" + JSON.stringify(item[key]))
                    }
                    if (typeof (item[key]) == "number") {
                        console.log(key + "是Number类型,数据为：" + item[key])
                    }
                }
            }

        })

2、例：[{"pagestate":"0"}]

要单独获取pagestate，则：pagestate=data[1]["pagestate"];