Windows之间使用JavaScript的通信

Question

I've been looking for how to communicate two differents windows with Javascript, but I haven't found anything usefull...

The thing is:

Imagine that I have a Web Page which have some data and another web page is required to do something, I want to send information from the first one to the second one, process that data in the second one and get back a result to the original web page.

I don't know if I do make myself clear, first of all because I'm English learner, but if you can help I really appreciate that.

Thx.

Answer 1

If one window is opening up the other window then you can have them pass data via function calls. The calling window can save the window variable and then call methods on that window. The called window can also make function calls on the parent window that opened it.

//the parent window must open the child window for this to work
<script>
var childWindow = null;  //page level variable for the child window

function OpenChildWindow() {
    childWindow = window.open(URL);  //create the child window and save the window to our variable
}

function SendChildData(data) {
    childWindow.XferData(data);  //this calls the function on the child window
}

function ReceiveChildData(data) {
    //do something with the data from the child window
}
</script>

//from the child window you can send or receive data as well
//the parent window is accessable via the opener property.
<script>
function SendParentData(data) {
  opener.ReceiveChildData(data)  //this calls the javascript function on the parent window and send it the data
}

function XferData(data) {
    //this receives data from the parent window
}
</script>