Question

这是我第一次尝试向API发出跨域Ajax请求。我正在使用jQuery进行调用，并尝试将某些项目从返回页面放置。

以下是请求：

$.ajax({
    type: 'POST',
    url: 'http://magicseaweed.com/api/APIKEY/forecast/?spot_id=665',
    contentType: "text/plain",
    dataType: "json",
    xhrFields: {
            withCredentials: false
    },
    success: function(data) {
            timestamp = data.localTimestamp;
            alert(timestamp);
    },
    error: function() {
            alert("aw crap");
    }
});

以下是回复：

[{
    timestamp: 1366902000,
    localTimestamp: 1366902000,
    issueTimestamp: 1366848000,
    fadedRating: 0,
    solidRating: 0,
    swell: {
        minBreakingHeight: 1,
        absMinBreakingHeight: 1.06,
        maxBreakingHeight: 2,
        absMaxBreakingHeight: 1.66,
        unit: "ft",
        components: {
             combined: {
             height: 1.1,
             period: 14,
             direction: 93.25,
             compassDirection: "W"
        },
        primary: {
            height: 1,
            period: 7,
            direction: 83.37,
            compassDirection: "W"
        },
        secondary: {
            height: 0.4,
            period: 9,
            direction: 92.32,
            compassDirection: "W"
        },
        tertiary: {
            height: 0.3,
            period: 13,
            direction: 94.47,
            compassDirection: "W"
        }
    }
}]

目前，我只想让时间戳字符串显示在警告框中。

alert(timestamp);以未定义的形式返回。我的错误在哪里？

Answer 1

        timestamp = data[0].localTimestamp;

不是

        timestamp = data.localTimestamp;

因为响应是包含一个项目[{...}]

的数组

jQuery Ajax请求（CORS）返回undefined

1 个答案: