4.1 Fetch API
代码清单 4.1
var request;
if (window.XMLHttpRequest) {
request = new XMLHttpRequest();
} else if (window.ActiveXObject) {
try {
request = new ActiveXObject('Msxml2.XMLHTTP');
} catch (e) {
try {
request = new ActiveXObject('Microsoft.XMLHTTP');
} catch (e) {}
}
}
request.onreadystatechange = function () {
if (this.readyState == 4 && this.status == 200) {
doSomething(this.responseText);
}
};
// 打开,发送
request.open('GET', '/some/url', true);
request.send();代码清单 4.2
代码清单 4.3
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