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fix #195

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qianguyihao 2021-10-08 16:57:15 +08:00
parent f2b9a2ed73
commit 0507c8fdc3
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06-JavaScript异步编程：Ajax和Promise/02-Ajax入门和发送http请求.md
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@ -217,7 +217,7 @@ function myAjax(url, success, fail) {
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState === 4 && xmlhttp.status === 200) {
var obj = JSON.parse(xmlhttp.responseText);
console.log('数据返回成功：' + Jobj);
console.log('数据返回成功：' + obj);
success && success(xmlhttp.responseText);
} else {
// 这里的 && 符号，意思是：如果传了 fail 参数，就调用后面的 fail()；如果没传 fail 参数，就不调用后面的内容。因为 fail 参数不一定会传。