Question

我做了这个适用于IE10及以上版本的脚本。它也适用于Opera，Chrome，Firefox。

function trackid() {
    var client = new XMLHttpRequest();
    client.open('GET', 'https://radio.riddimdub.com/playing.txt');
    client.onreadystatechange = function() {
        var trackName = client.responseText;
        document.getElementsByClassName("tracktitle")[0].innerHTML = trackName;
    };
    client.send()
};
trackid();
setInterval(trackid, 5000);

现在我稍微改了一下，让它适用于IE9。我这样做了：

function trackid() {
    var client = new XMLHttpRequest();
    client.open('GET', 'https://radio.riddimdub.com/playing.txt');
    client.send()
    if (client.readyState === client.DONE) {
        var trackName = client.responseText;
        document.getElementsByClassName("tracktitle")[0].innerHTML = trackName;
    }
};
trackid();
setInterval(trackid, 5000);

问题是我在IE9上的控制台上没有出错，也没有在Opera上出错，但它在两者上都不起作用。

值得一提的是，我也尝试过：

try {
} finally {
}

我做错了什么？

Answer 1

我做到了。谢谢你们的信息。以下是：

function trackid() {
    var client = new XMLHttpRequest();
    client.open('GET', 'https://radio.riddimdub.com/playing.txt');
    client.onreadystatechange = function() {
        if (client.readyState === client.DONE) {
            var trackName = client.responseText;
            document.getElementsByClassName("tracktitle")[0].innerHTML = trackName;
        }
    }
    client.send()
};
trackid();
setInterval(trackid, 5000);

Javascript XMLHttpRequest无法在IE 9

1 个答案: