function format(obj) {
???var temp = [];
???for (var key in obj) {
???????temp.push(key + "=" + obj[key]);
???}
???return temp.join("&");
}
function extend() {
???for (var i = 0; i < arguments.length; i++) {
???????for (var key in arguments[i]) {
???????????arguments[0][key] = arguments[i][key];
???????}
???}
???return arguments[0];
}
function ajax(opt) {
???var def = {
???????async: true,
???????method: ‘get‘,
???????data: null,
???????success: function() {}
???}
???var settings = extend({}, def, opt);
???var data = typeof settings.data == ‘object‘ ? format(settings.data) : settings.data;
???var xhr = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
???if (settings.method == ‘get‘) {
???????xhr.open(settings.method, settings.url + "?" + data, settings.async);
???????xhr.send();
???} else if (settings.method == ‘post‘) {
???????xhr.open(settings.method, settings.url, settings.async);
???????xhr.setRequestHeader(‘Centent-Type‘, "application/x-www-form-urlencoded,charset-utf-8");
???????xhr.send(data);
???}
???xhr.onreadystatechange = function() {
???????if (xhr.readyState == 4) {
???????????if (xhr.status == 200) {
???????????????var obj = JSON.parse(xhr.responseText);
???????????????settings.success(obj);
???????????}
???????}
???}
}
封装ajax
原文地址：https://www.cnblogs.com/mapsxy/p/9215935.html