时间:2020-10-08 13:25:35 | 栏目:JavaScript代码 | 点击:次
get和post方法最大的不同在于:
1.get方法传值参数在url里面,而post参数放send里面
2.post方法必须加上
xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
下面实例可以看get方法
xmlHttp.open("GET","for.php?text="+url,true);
在post里面表现为:
xmlHttp.open("POST","for.php",true); xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
POST和GET方法共用文件
index.php
<script src="a.js" type="text/javascript"></script> <a href="#" onClick="funphp100('o')">o</a> <a href="#" onClick="funphp100('t')">t</a> <a href="#" onClick="funphp100('x')">x</a> <div id="php100"></div>
POST方法文件:
a.js
var xmlHttp; function S_xmlhttprequest(){ if(window.ActiveXObject){ xmlHttp=new ActiveXObject('Microsoft.XMLHTTP'); }else if(window.XMLHttpRequest){ xmlHttp=new XMLHttpRequest(); } } function funphp100(n){ var data = "text=" +n; //多个参数的,往后加 S_xmlhttprequest(); xmlHttp.open("POST","for.php",true); xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xmlHttp.onreadystatechange=byphp; xmlHttp.send(data); } function byphp(){ var byphp100=xmlHttp.responseText; document.getElementById("php100").innerHTML=byphp100; }
for.php:
<? echo $_POST['text']; ?>
GET方法文件:
a.js:
var xmlHttp; function S_xmlhttprequest(){ if(window.ActiveXObject){ xmlHttp=new ActiveXObject('Microsoft.XMLHTTP'); }else if(window.XMLHttpRequest){ xmlHttp=new XMLHttpRequest(); } } function funphp100(url){ S_xmlhttprequest(); xmlHttp.open("GET","for.php?text="+url,true); xmlHttp.onreadystatechange=byphp; xmlHttp.send(null); } function byphp(){ var byphp100=xmlHttp.responseText; document.getElementById("php100").innerHTML=byphp100; }
for.php:
<? echo $_GET['text']; ?>