document-body | 易学教程

why does body.scrollHeight automatically increase but not decrease

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问题 My iframe.body has a scrollHeight property which I believe is read only I don't understand how it gets set. When I modify the iframe.body.innerHTML with some larger HTML, I notice the iframe.body.scrollHeight increases . Great! When we set $('#previewWindow').height(iframeDocument.body.scrollHeight) this means that the scrollbar is the right height for the new larger content However.... When I modify the iframe.body.innerHTML with some smaller HTML, I notice the iframe.body.scrollHeight

Body color appearing over header

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问题 I'm trying to design google play like webpage design (Mobile version). I'm using CUSTOM GRID SYSTEM (12 col 0.5% margin). The problem is that body color is appearing over header section (I think so, maybe its a different problem). I want to make it look/scroll like this: Example image of google play mobile Here is the code: ** You may need to zoom to 250% or landscape max width:640px to view the design. ** body { margin: 0px; padding: 0px; font-family: Roboto; background: #eeeeee; } html {

Webkit moves head content to body, and adds extra space?

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问题 It seems Webkit moves all my head tags to the body, and adds a lot of whitespace before the body. When I look at the source, the tags are in the right place. When I inspect the elements using the Chrome browser, the tags have been moved. I suspect it's Webkit because the same happened in Safari, but not in Opera or Firefox. I use the latest of all browsers. Here is my source code start, as appears when I press "Show Source": <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www

Why doesn't the z-index style apply to the <body> element?

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问题 The z-index style allows you to control what order boxes are painted in. For example, you can make a child element be painted below its parent element: #parent { background: rgba(33, 33, 33, 0.7); } #child { width: 100px; height: 100px; background: yellow; position: relative; z-index: -1; } <div id="parent"><div id="child"></div></div> However, when the parent element is the <body> tag, this no longer behaves as expected: body { background: rgba(33, 33, 33, 0.7); } #child { width: 100px;

Why doesn't HTML body background-color obey margin?

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问题 According to w3, the margin of an element is transparent: I've built a very basic HTML page: <!DOCTYPE html> <html lang="en"> <head> <title>Document</title> <style> body { background-color: red; } </style> </head> <body></body> </html> In Chrome, the inspector reports that "body" has an 8px margin: But on the page, the margin is full of the background color! (Notice that there's no space between my bookmarks bar and the red background - I promise I haven't scrolled. What's up with that? 回答1:

Why does liquid {%SEO%} tag not get integrated into head? instead it shows in body

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问题 For some unknown reason any LIQUID syntax used inside <head> ends up in the <body> What I have done? 1) I cloned a template and build my own layout with JEKYLL static site generator. 2) I installed all gems (check gemlist: 'jekyll-seo-tag' 'liquid 4.0' ) 3) I configured config.yml 4) I added {%SEO%} to <head> Minimal <head> <meta charset="utf-8"> <meta name="author" content="Gino Ludikhuyze"> <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines

Get only body of letters, emails from text files

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问题 I want to remove all from, to, cc, subject sent tags from this text document and only keep the body of the mail so that I can use this to summarize content of the document. What is the best way to do this in python. I think it's better to first do the extraction and then use preprocessing for this case. Also attaching code here. So if anyone can suggest how to do this, would be really helpful. The payload and ismultipart part of the file is not done properly and there is where my doubt is and

Is `position: fixed` on `<body>` problematic?

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问题 On a SPA for mobile devices and desktop browsers I need to set position: fixed on <body> to avoid iOS' overflow/rubberband scrolling. position: fixed and modifications on the <body> are always somewhat hacky and risky to cause problems. This is why I wanted to clarify: Are there any known problems / caveats / things to watch out for (i.e. stacking context, z-indexing context, static/relative/absolute/fixed positioning on children) / ... when adding position: fixed to <body> 回答1: The "position

How can I intercept the HTTP request of a PHP Soap Client?

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问题 I have implemented a SoapClient in PHP and I need to debug calls made to the Soap server. I would like to intercept the HTTP calls when I run my PHP code in order to retrieve the body content. Is this possible? How can I achieve this? I am under Linux. 回答1: Extend the SoapClient class and redefine the method __doRequest(). This is where the HTTP request is sent to the server. If you are happy with the default implementation, all you have to do is to log the values it receives as arguments,

CSS: Blur and invert colors for entire page

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问题 When using both webkit filters "blur" and "invert", only blur works. And if "blur" is removed "invert" works. Also only Chrome and Opera are responding to the code. Is there a way to make this work for recent IE and Firefox versions? body { -webkit-filter: invert(100%); -webkit-filter: blur(5px); -moz-filter: blur(5px); -o-filter: blur(5px); -ms-filter: blur(5px); filter: blur(5px); } 回答1: You could use svg 's foreignObject element to import the entire body 's content into an svg element and