[英]How to get the height of a full html page in Phantomjs (javascript)?
Hi have tried all of these: 您好过尝试过所有这些:
document.body.scrollHeight
document.body.offsetHeight
document.documentElement.clientHeight
document.documentElement.scrollHeight
document.documentElement.offsetHeight
These work in a normal browser but in Phantomjs I get the CMD (command-line window) height.. I want to get the height so that I can crop a screenshot later in the code.. and the height of the page must be as it is being viewed on a normal browser 这些工作在普通的浏览器中,但在Phantomjs中,我得到CMD(命令行窗口)高度..我想获得高度,以便我可以在代码中稍后裁剪屏幕截图..并且页面的高度必须为它正在普通浏览器上查看
I'm getting 300 pixels and I want to get the full html page height (that varies dependent on the URL).. 我有300像素,我想得到完整的html页面高度(取决于URL)。
Those values provide the expected values as with other browsers. 这些值提供与其他浏览器一样的预期值。 Full example:
完整示例:
var page = require('webpage').create();
var url = 'http://www.stackoverflow.com/';
page.open(url, function(){
console.log(page.evaluate(function(){
return JSON.stringify({
"document.body.scrollHeight": document.body.scrollHeight,
"document.body.offsetHeight": document.body.offsetHeight,
"document.documentElement.clientHeight": document.documentElement.clientHeight,
"document.documentElement.scrollHeight": document.documentElement.scrollHeight
}, undefined, 4);
}));
phantom.exit();
});
Output: 输出:
{ "document.body.scrollHeight": 8777, "document.body.offsetHeight": 8777, "document.documentElement.clientHeight": 300, "document.documentElement.scrollHeight": 8777 }
Reasons why it might not be the case for your: 您可能不是这样的原因:
page.evaluate()
. page.evaluate()
访问。 There exists a document
object outside of page.evaluate()
, but it is only a dummy. page.evaluate()
之外存在一个document
对象,但它只是一个虚拟对象。 <body>
may not be scrollable, but only some child element that has all the (scrollable) content. <body>
可能不是可滚动的,而只是一些具有所有(可滚动)内容的子元素。 In which case every value is equal to the viewport height.
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.