Html5 postmessage 子父窗口传值
2016-06-17 11:06
1011 查看
最近做一个POS机终端遇到一个问题,子父窗口传值问题,因为POS机是两个屏幕,如果将一个页面拉长投射虽然可以做到两个屏幕显示,但是因为是触摸屏,当第一个屏幕在操作的时候会影响到第二屏幕,反之也是如此,既然需求明确了,问题也知道了,则我们需要两个窗口进行不同的操作
首先是父页面:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Html5 postMessage</title>
<style>
#otherWin {
width: 600px;
height: 400px;
background-color: #cccccc;
}
#txt {
width: 500px;
height: 300px;
background-color: #cccccc;
}
</style>
</head>
<body>
<button id="btn">open</button>
<button id="send">send</button>
<input type="text" id="message" />
<br/><br/>
<div id="txt"></div>
<script>
window.onload = function() {
var btn = document.getElementById('btn');
var btn_send = document.getElementById('send');
var text = document.getElementById('txt');
var win;
btn.onclick = function() {
//通过window.open打开接收消息目标窗口
win = window.open('http://127.0.0.1:8080/mngapp/chatroom/win.html', 'popUp');
}
btn_send.onclick = function() {
// 通过 postMessage 向子窗口发送数据
win.postMessage( document.getElementById("message").value, 'http://127.0.0.1:8080/');
}
if (window.addEventListener) {
//为window注册message事件并绑定监听函数
window.addEventListener('message', receiveMsg, false);
}else {
window.attachEvent('message', receiveMsg);
}
//监听函数,接收一个参数--Event事件对象
function receiveMsg(e) {
console.log("Got a message!");
console.log("Message: " + e.data);
console.log("Origin: " + e.origin);
text.innerHTML = "Got a message!<br>" +
"Message: " + e.data +
"<br>Origin: " + e.origin;
}
};
</script>
</body>
</html>
然后再是子页面:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Html5 postMessage</title>
<style>
#txt {
width: 500px;
height: 300px;
background-color: #cccccc;
}
</style>
</head>
<body>
<h1>The New Window</h1>
<div id="txt"></div>
<input type="text" id="message" />
<button id="send">send</button>
<script>
window.onload = function() {
var text = document.getElementById('txt');
var btn_send = document.getElementById('send');
var prent = null;
btn_send.onclick = function() {
// 通过 postMessage 向父窗口发送数据
freceiveMsg(prent);
}
//监听函数,接收一个参数--Event事件对象
function receiveMsg(e) {
console.log("Got a message!");
console.log("Message: " + e.data);
console.log("Origin: " + e.origin);
text.innerHTML = "Got a message!<br>" +
"Message: " + e.data +
"<br>Origin: " + e.origin;
//获取父对象
prent = e;
}
function freceiveMsg(e) {
console.log("freceiveMsg:"+e);
e.source.postMessage(document.getElementById("message").value,
e.origin);
}
if (window.addEventListener) {
//为window注册message事件并绑定监听函数
window.addEventListener('message', receiveMsg, false);
}else {
window.attachEvent('message', receiveMsg);
}
};
</script>
</body>
</html>
首先是父页面:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Html5 postMessage</title>
<style>
#otherWin {
width: 600px;
height: 400px;
background-color: #cccccc;
}
#txt {
width: 500px;
height: 300px;
background-color: #cccccc;
}
</style>
</head>
<body>
<button id="btn">open</button>
<button id="send">send</button>
<input type="text" id="message" />
<br/><br/>
<div id="txt"></div>
<script>
window.onload = function() {
var btn = document.getElementById('btn');
var btn_send = document.getElementById('send');
var text = document.getElementById('txt');
var win;
btn.onclick = function() {
//通过window.open打开接收消息目标窗口
win = window.open('http://127.0.0.1:8080/mngapp/chatroom/win.html', 'popUp');
}
btn_send.onclick = function() {
// 通过 postMessage 向子窗口发送数据
win.postMessage( document.getElementById("message").value, 'http://127.0.0.1:8080/');
}
if (window.addEventListener) {
//为window注册message事件并绑定监听函数
window.addEventListener('message', receiveMsg, false);
}else {
window.attachEvent('message', receiveMsg);
}
//监听函数,接收一个参数--Event事件对象
function receiveMsg(e) {
console.log("Got a message!");
console.log("Message: " + e.data);
console.log("Origin: " + e.origin);
text.innerHTML = "Got a message!<br>" +
"Message: " + e.data +
"<br>Origin: " + e.origin;
}
};
</script>
</body>
</html>
然后再是子页面:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Html5 postMessage</title>
<style>
#txt {
width: 500px;
height: 300px;
background-color: #cccccc;
}
</style>
</head>
<body>
<h1>The New Window</h1>
<div id="txt"></div>
<input type="text" id="message" />
<button id="send">send</button>
<script>
window.onload = function() {
var text = document.getElementById('txt');
var btn_send = document.getElementById('send');
var prent = null;
btn_send.onclick = function() {
// 通过 postMessage 向父窗口发送数据
freceiveMsg(prent);
}
//监听函数,接收一个参数--Event事件对象
function receiveMsg(e) {
console.log("Got a message!");
console.log("Message: " + e.data);
console.log("Origin: " + e.origin);
text.innerHTML = "Got a message!<br>" +
"Message: " + e.data +
"<br>Origin: " + e.origin;
//获取父对象
prent = e;
}
function freceiveMsg(e) {
console.log("freceiveMsg:"+e);
e.source.postMessage(document.getElementById("message").value,
e.origin);
}
if (window.addEventListener) {
//为window注册message事件并绑定监听函数
window.addEventListener('message', receiveMsg, false);
}else {
window.attachEvent('message', receiveMsg);
}
};
</script>
</body>
</html>
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