>[danger]**get & post 封裝：** ~~~ //DOM節點捕獲封裝 function $(selector){ return document.querySelector(selector); } //ajax 兼容性封裝 function createXhr(){ try{ return new XMLHttpRequest(); }catch(e){} try{ return new ActiveXObject('Microsoft.XMLHTTP'); }catch(e){} alert('該瀏覽器不支持Ajax！！'); } //ajax get方式封裝 Function.prototype.get = function(url,data,func,async=true){ //創建ajax對象 var ajax = createXhr(); //設置回調函數 ajax.onreadystatechange = function(){ if(ajax.readyState == 4 && ajax.status==200){ var res = ajax.responseText; func(res); } } //初始化ajax請求 ajax.open('get',url+'?'+data,async); //發送ajax請求 ajax.send(); } //ajax post方式封裝 Function.prototype.post = function(url,data,func,async=true){ //創建ajax對象 var ajax = createXhr(); //設置回調函數 ajax.onreadystatechange = function(){ if(ajax.readyState == 4 && ajax.status==200){ var res = ajax.responseText; func(res); } } //初始化ajax請求 ajax.open('post',url,async); //設置請求頭部 ajax.setRequestHeader('Content-type','application/x-www-form-urlencoded'); //發送ajax請求 ajax.send(data); } ~~~ >[danger]調用： ~~~ //func 為函數，調用整個函數的時候，在參數列表里面寫函數體 $.get('./GET/do_reg_get.php','name=admin',function(res){ var res = eval('('+res+')'); console.log(res); }); ~~~ >[info] `eval('('+json數據+')')` //將json數據轉化為對象