javascript 如何忽略phantomjs中的错误
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how to ignore errors in phantomjs
提问by user2661048
I have a web crawler and I use phantomjs to parse pages, I want to get the html, but I always get this type of errors in the output before the html code
我有一个网络爬虫，我使用 phantomjs 来解析页面，我想获取 html，但是我总是在 html 代码之前的输出中收到此类错误
ReferenceError: Can't find variable: collapse_content_selector
http://staticloads.com/js/toggle.js?v=2013.10.04:135
TypeError: 'undefined' is not a function (evaluating '$('[placeholder]').placeholderLabel()')
how can I stop that
我怎么能阻止
回答by Cybermaxs
The easiest way is to add an error handler to phantom.onerroror webpage.onerror. These callbacks are invoked when there is a JavaScript execution error (in the page or in your script).
最简单的方法是向phantom.onerror或pages.onerror添加错误处理程序。当出现 JavaScript 执行错误（在页面或脚本中）时会调用这些回调。
page.onError = function(msg, trace) {
var msgStack = ['ERROR: ' + msg];
if (trace && trace.length) {
msgStack.push('TRACE:');
trace.forEach(function(t) {
msgStack.push(' -> ' + t.file + ': ' + t.line + (t.function ? ' (in function "' + t.function + '")' : ''));
});
}
// uncomment to log into the console
// console.error(msgStack.join('\n'));
};
