js原生的ajax

//下面是原生的js实现的ajax

function myajax(){

var xmlhttp;

if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari

xmlhttp = new XMLHttpRequest();

}

else {// code for IE6, IE5

xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

}

xmlhttp.onreadystatechange = function () {

if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {

var result = JSON.parse(xmlhttp.responseText);

console.log(result);

}

}

xmlhttp.open("POST", "/--------", true);//如果不跨域的话填个相对路径的接口地址就好，省略了域名

xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

xmlhttp.send();//send()里面可以加ajax提交的数据

}