blocks|key|390119|text|我在过去使用了两种不同的方法，包括查询Declan提到的DOM的page.evaluate()方法。我从网页传递信息的另一种方式是将信息从那里传递给console.log()，并在phantomjs脚本中使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|390120|page.onConsoleMessage+=+function+(msg,+line,+source)+{
++console.log('console+['+%2Bsource+%2B':'+%2Bline+%2B']>+'+%2Bmsg);
}|code-block|syntax|javascript|390121|我可能还会在onConsoleMessage中捕获变量msg并搜索一些封装的数据。取决于您希望如何使用输出。|390122|然后在Nodejs脚本中，您必须扫描Phantomjs脚本的输出：|390123|var+yourfunc+=+function(...params...)+{
++var+phantom+=+spawn('phantomjs',+[...args]);
++phantom.stdout.setEncoding('utf8');
++phantom.stdout.on('data',+function(data)+{
++++//parse+or+echo+data
++++var+str_phantom_output+=+data.toString();
++++//+The+above+will+get+triggered+one+or+more+times,+so+you'll+need+to
++++//+add+code+to+parse+for+whatever+info+you're+expecting+from+the+browser
++});
++phantom.stderr.on('data',+function(data)+{
++++//+do+something+with+error+data
++});
++phantom.on('exit',+function(code)+{
++++if+(code+!==+0)+{
++++++//+console.log('phantomjs+exited+with+code+'+%2Bcode);
++++}+else+{
++++++//+clean+exit:+do+something+else+such+as+a+passed-in+callback
++++}
++});
}|390124|希望这能对你有所帮助。|390125|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I've used two different ways in the past, including the page.evaluate() method that queries the DOM that Declan mentioned. The other way I've passed info from the web page is to spit it out to console.log() from there, and in the phantomjs script use:

<pre><code>page.onConsoleMessage = function (msg, line, source) {
 console.log('console [' +source +':' +line +']&gt; ' +msg);
}
</code></pre>

I might also trap the variable msg in the onConsoleMessage and search for some encapsulate data. Depends on how you want to use the output.

Then in the Nodejs script, you would have to scan the output of the Phantomjs script:

<pre><code>var yourfunc = function(...params...) {
 var phantom = spawn('phantomjs', [...args]);
 phantom.stdout.setEncoding('utf8');
 phantom.stdout.on('data', function(data) {
 //parse or echo data
 var str_phantom_output = data.toString();
 // The above will get triggered one or more times, so you'll need to
 // add code to parse for whatever info you're expecting from the browser
 });
 phantom.stderr.on('data', function(data) {
 // do something with error data
 });
 phantom.on('exit', function(code) {
 if (code !== 0) {
 // console.log('phantomjs exited with code ' +code);
 } else {
 // clean exit: do something else such as a passed-in callback
 }
 });
}
</code></pre>

Hope that helps some.

blocks|key|606244|text|如果有人在这个问题上遇到问题，请及时更新：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|606245|我的一个同事开发的一个关于GitHub的项目就是为了帮助你做到这一点：https://github.com/vmeurisse/phantomCrawl。|offset|length|606246|它还有点年轻，当然还缺少一些文档，但提供的示例应该有助于进行基本的爬行。|606247|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/vmeurisse/phantomCrawl^0|0|Z|15|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Late update in case anyone stumbles on this question:

A project on GitHub developed by a colleague of mine exactly aims at helping you do that: <a href="https://github.com/vmeurisse/phantomCrawl" rel="nofollow">https://github.com/vmeurisse/phantomCrawl</a>.

It still a bit young, it certainly is missing some documentation, but the example provided should help doing basic crawling.

blocks|key|606285|text|为什么不直接用这个呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|606286|var+page+=+require('webpage').create();
page.open("http://example.com",+function+(status)
{
++++if+(status+!==+'success')+
++++{
++++++++console.log('FAIL+to+load+the+address');++++++++++++
++++}+
++++else+
++++{
++++++++console.log('Success+in+fetching+the+page');
++++++++console.log(page.content);
++++}
++++phantom.exit();
});|code-block|syntax|javascript|606287|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Why not just use this ? 

<pre><code>var page = require('webpage').create();
page.open("http://example.com", function (status)
{
 if (status !== 'success') 
 {
 console.log('FAIL to load the address'); 
 } 
 else 
 {
 console.log('Success in fetching the page');
 console.log(page.content);
 }
 phantom.exit();
});
</code></pre>

blocks|key|606341|text|这是一个旧版本，我使用了运行节点，express和phantomjs，它将页面保存为.png。您可以相当快地调整它以获得html。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|606342|https://github.com/wehrhaus/sitescrape.git|offset|length|606343|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|16|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

Here's an old version that I use running node, express and phantomjs which saves out the page as a .png. You could tweak it fairly quickly to get the html.

<a href="https://github.com/wehrhaus/sitescrape.git" rel="nofollow">https://github.com/wehrhaus/sitescrape.git</a>

blocks|key|390307|text|使用phantomjs-node的v2，可以很容易地在处理后打印HTML。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|390308|var+phantom+=+require('phantom');

phantom.create().then(function(ph)+{
++ph.createPage().then(function(page)+{
++++page.open('https://stackoverflow.com/').then(function(status)+{
++++++console.log(status);
++++++page.property('content').then(function(content)+{
++++++++console.log(content);
++++++++page.close();
++++++++ph.exit();
++++++});
++++});
++});
});|code-block|syntax|javascript|390309|这将显示与使用浏览器呈现的输出相同的输出。|390310|编辑2019：|390311|您可以使用async/await|390312|const+phantom+=+require('phantom');

(async+function()+{
++const+instance+=+await+phantom.create();
++const+page+=+await+instance.createPage();
++await+page.on('onResourceRequested',+function(requestData)+{
++++console.info('Requesting',+requestData.url);
++});

++const+status+=+await+page.open('https://stackoverflow.com/');
++const+content+=+await+page.property('content');
++console.log(content);

++await+instance.exit();
})();|390313|或者，如果你只是想测试，你可以使用npx|390314|npx+phantom@latest+https://stackoverflow.com/|390315|entityMap^0|2|E|0|0|0|0|5|B|0|0|H|3|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|U|3|V|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|W|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|X|$]]

With v2 of <code>phantomjs-node</code> it's pretty easy to print the HTML after it has been processed. 

<pre><code>var phantom = require('phantom');

phantom.create().then(function(ph) {
 ph.createPage().then(function(page) {
 page.open('https://stackoverflow.com/').then(function(status) {
 console.log(status);
 page.property('content').then(function(content) {
 console.log(content);
 page.close();
 ph.exit();
 });
 });
 });
});
</code></pre>

This will show the output as it would have been rendered with the browser. 

Edit 2019: 

You can use <code>async/await</code>:

<pre><code>const phantom = require('phantom');

(async function() {
 const instance = await phantom.create();
 const page = await instance.createPage();
 await page.on('onResourceRequested', function(requestData) {
 console.info('Requesting', requestData.url);
 });

 const status = await page.open('https://stackoverflow.com/');
 const content = await page.property('content');
 console.log(content);

 await instance.exit();
})();
</code></pre>

Or if you just want to test, you can use <code>npx</code>

<pre><code>npx phantom@latest https://stackoverflow.com/
</code></pre>

I'm looking for an example of requesting a webpage, waiting for the JavaScript to render (JavaScript modifies the DOM), and then grabbing the HTML of the page.

This should be a simple example with an obvious use-case for PhantomJS. I can't find a decent example, the documentation seems to be all about command line use.

Save and render a webpage with PhantomJS and node.js

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在寻找一个请求网页的示例，等待JavaScript呈现(JavaScript修改DOM)，然后获取页面的超文本标记语言。这应该是一个简单的例子，有一个明显的PhantomJS用例。我找不到一个像样的例子，文档似乎都是关于命令行的使用。

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