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Javascript:从弹出窗口中找到主页上的框架?

frames asp.net javascript

0

VoodooChild · 技术社区 · 14 年前

function sendRefreshMessage(data) {
    var myObj = null;
    myObj = document.getElementById('slPlugin');
    if (null != myObj) {
        try {
            //perform operation on myObj
        } catch (err) {
        }
    }
    else {
        if (null != top.opener.top.mainFrame) {
            myObj = top.opener.top.mainFrame.document.getElementById('slPlugin');
            if (null != myObj) {
                try {
                    //perform operation on myObj
                } catch (err) {
                }
            }
        }
        else {
            myObj = top.opener.top.opener.top.mainFrame.document.getElementById('slPlugin');
            if (null != myObj) {
                try {
                    //perform operation on myObj
                } catch (err) {
                }
            }
        }
    }
}

1 回复 | 直到 14 年前

1

Frédéric Hamidi 14 年前

更好的 )方法是,假设插件总是驻留在一个名为 mainFrame :

function findPlugin(container)
{
    var plugin = null;
    if (container.mainFrame != null) {
        plugin = container.mainFrame.document.getElementById('slPlugin');
    }
    if (plugin == null && container.opener != null) {
        plugin = findPlugin(container.opener.top);
    }
    return plugin;
}

function sendRefreshMessage(data)
{
    var plugin = findPlugin(window.top);
    if (plugin != null) {
        try {
            // Perform operation on `plugin`.
        } catch (err) {
            // Please avoid empty catch blocks, they're evil.
        }
    }
}