php文件与HTML页面的数据交互

HTML发送(使用POST发送)

searchArray = document.getElementsByTagName('li');//获取名字为’li’的所有标签项并存入数组

var writeArray = [];

for(var i = 0;i

writeArray[i] = searchArray[i].innerText;//获取标签内容writeArray = ['dog','cat'];

}

//使用POST将数组writeArray发送到php文件servertest.php

var request = new XMLHttpRequest();

request.open("POST", "servertest.php");

var q = "data=" + writeArray;// q="name"+ value；

//发送内容体由name+value组成，此处name为data，value为writeArray

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

request.send(q);

request.onreadystatechange = function() {

if (request.readyState===4) {

if (request.status===200) {

} else {

alert("发生错误：" + request.status);

}

}

}

注：关键操作var request = new XMLHttpRequest();

request.open("POST", "servertest.php");

var q = "data=" + writeArray;// 生成信息体q = “name “+ value

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

request.send(q);

//HTML页面POST发送内容后，php通过超全局变量 $_GET 和 $_POST收集

php接收(使用超全局变量$_GET 和 $_POST收集)