时间:2021-07-01 10:21:17 帮助过:7人阅读
本篇文章给大家带来的内容是关于原生javascript实现AJAX的代码示例,有一定的参考价值,有需要的朋友可以参考一下,希望对你有所帮助。
原生JS使用AJAX使用代码,代码如下
var xhr1 = new XMLHttpRequest; xhr1.open("POST", 'http://47.92.121.171:17788', true); xhr1.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); xhr1.onreadystatechange = function () { if (xhr1.readyState == 4 && xhr1.status == 200) { console.log("打印用户信息1" + xhr1.responseText); } } xhr1.send("code=p_001&name=aaaaaa&pas=123456&belong=aabbccdd");
如果需要ajax运行方法完成后调用结果的话 需要使用回调函数 或者 promise
回调函数
private loadXMLDoc(url, sendcode, cfunc) { this.xmlhttp = new XMLHttpRequest; this.xmlhttp.open("POST", url, true); this.xmlhttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); this.xmlhttp.onreadystatechange = cfunc; this.xmlhttp.send(sendcode); } private myFunction() { this.loadXMLDoc("http://47.92.121.171:17788", "code=p_001&name=aaaaaa&pas=123456&belong=aabbccdd",()=>{ if (this.xmlhttp.readyState == 4 && this.xmlhttp.status == 200) { console.log("3") console.log("打印用户信息1" + this.xmlhttp.responseText) } }); }
使用promise
this.getGameServer().then(function (res) { console.log("res" + res); }).catch(function (rej) { console.log("rej" + rej); });private getGameServer() { return new Promise(function (resolve, reject) { var xhr = new XMLHttpRequest; xhr.open("POST", 'http://47.92.121.171:9002/rout/get_game_servers', true); xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); xhr.onreadystatechange = function () { if (xhr.readyState == 4 && xhr.status == 200) { resolve(xhr.responseText); } } xhr.send("game=1&shang=common"); }); }
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