我认为 onLoadStarted 和 onLoadFinished 函数是您需要的一切。以下面的脚本为例：

I think the onLoadStarted and onLoadFinished functions are everything you need. Take for example the following script:

var page = require('webpage').create();

page.onResourceReceived = function(response) {
    if (response.stage !== "end") return;
    console.log('Response (#' + response.id + ', stage "' + response.stage + '"): ' + response.url);
};
page.onResourceRequested = function(requestData, networkRequest) {
    console.log('Request (#' + requestData.id + '): ' + requestData.url);
};
page.onUrlChanged = function(targetUrl) {
    console.log('New URL: ' + targetUrl);
};
page.onLoadFinished = function(status) {
    console.log('Load Finished: ' + status);
};
page.onLoadStarted = function() {
    console.log('Load Started');
};
page.onNavigationRequested = function(url, type, willNavigate, main) {
    console.log('Trying to navigate to: ' + url);
};

page.open("http://example.com", function(status){
    page.evaluate(function(){
        // click
        var e = document.createEvent('MouseEvents');
        e.initMouseEvent('click', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
        document.querySelector("a").dispatchEvent(e);
    });
    setTimeout(function(){
        phantom.exit();
    }, 10000);
});

打印

Trying to navigate to: http://example.com/
Request (#1): http://example.com/
Load Started
New URL: http://example.com/
Response (#1, stage "end"): http://example.com/
Load Finished: success
Trying to navigate to: http://www.iana.org/domains/example
Request (#2): http://www.iana.org/domains/example
Load Started
Trying to navigate to: http://www.iana.org/domains/reserved
Request (#3): http://www.iana.org/domains/reserved
Response (#2, stage "end"): http://www.iana.org/domains/example
New URL: http://www.iana.org/domains/reserved
Request (#4): http://www.iana.org/_css/2013.1/screen.css
Request (#5): http://www.iana.org/_js/2013.1/jquery.js
Request (#6): http://www.iana.org/_js/2013.1/iana.js
Response (#3, stage "end"): http://www.iana.org/domains/reserved
Response (#6, stage "end"): http://www.iana.org/_js/2013.1/iana.js
Response (#4, stage "end"): http://www.iana.org/_css/2013.1/screen.css
Response (#5, stage "end"): http://www.iana.org/_js/2013.1/jquery.js
Request (#7): http://www.iana.org/_img/2013.1/iana-logo-header.svg
Request (#8): http://www.iana.org/_img/2013.1/icann-logo.svg
Response (#8, stage "end"): http://www.iana.org/_img/2013.1/icann-logo.svg
Response (#7, stage "end"): http://www.iana.org/_img/2013.1/iana-logo-header.svg
Request (#9): http://www.iana.org/_css/2013.1/print.css
Response (#9, stage "end"): http://www.iana.org/_css/2013.1/print.css
Load Finished: success

$ b b

它表明，单击链接会发出一次LoadStarted事件和NavigationRequested事件两次，因为有一个重定向。诀窍是在执行动作之前添加事件处理程序：

It shows that clicking a link emits the LoadStarted event once and NavigationRequested event twice, because there is a redirect. The trick is to add the event handlers before doing the action:

var page = require('webpage').create();

page.open("http://example.com", function(status){
    page.onLoadFinished = function(status) {
        console.log('Load Finished: ' + status);
        page.render("test37_next_page.png");
        phantom.exit();
    };
    page.onLoadStarted = function() {
        console.log('Load Started');
    };

    page.evaluate(function(){
        var e = document.createEvent('MouseEvents');
        e.initMouseEvent('click', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
        document.querySelector("a").dispatchEvent(e);
    });
});

如果你需要做这些事情，也许现在是时候尝试 CasperJS 。它运行在PhantomJS的顶部，但有一个更好的API用于导航网页。

If you need to do those things, maybe it is time to try something else like CasperJS. It runs on top of PhantomJS, but has a much better API for navigating web pages.