Question

I know this question looks like previous questions, but it is slightly different.

I want to write a function in my javascript like

this.imagePopup = function() {
    window.open("images/index.php","imageSelect");
    //some code I don't know....
    return imgUrl;
};

What code do I need to have the url of the selected image from the popup set in the variable imgUrl without setting the value in a text-input-field?

Answer 1

You can write a javascript handler in the popup to call a method in the opener. For instance a handler method as follows can help you:

function onSelectedIndexChange(ddl) {
    if(opener && ddl) opener.selectImageInPopup = ddl.options[ddl.selectedIndex].value;
}

..

<select onchange="onSelectedIndexChange(this)">...

Where selectImageInPopup is a global variable in the opener window.