The solution for the layer pop-up layer is not centered, the layer prompts the solution for not centering the screen,
Solution for layer popup not centered, layer popup not displayed
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Sweet Potato Yao December 9, 2016 09:07:16 Friday
http://fanshuyao.iteye.com/
1. Problem description
When using the layer to prompt the operation result, it is found that if the page exceeds the height of the screen, the prompt that pops up is not centered on the screen, but in the middle of the height of the page. If the height of a page is relatively large, the prompt cannot be seen.
There is also a situation where the Layer pop-up window only displays the mask layer and does not display the window (IFrame)
2. Solutions
Solution one:
When the following statement is missing from the page, adding the statement at the top of the page will solve the problem.
My page is missing this, plus it is normal. The reason is that this declaration is missing, resulting in incorrect parsing of the page.
<!doctype html>
Popular science:
Definition and Usage
The <!DOCTYPE> declaration must be the first line of the HTML document, before the <html> tag.
The <!DOCTYPE> declaration is not an HTML tag; it is an instruction to the web browser as to which version of HTML the page was written with.
In HTML 4.01, the <!DOCTYPE> declaration refers to a DTD because HTML 4.01 is based on SGML. The DTD specifies the rules of the markup language so that the browser can render the content correctly.
HTML5 is not based on SGML, so there is no need to refer to the DTD.
提示：请始终向 HTML 文档添加 <!DOCTYPE> 声明，这样浏览器才能获知文档类型。
解决方法二：
给Body增加一个样式，设置Body的高度为100%
<body style="height:100%;"> ...... ....... </body>
建议使用第一种，因为比较标准。
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蕃薯耀 2016年12月9日 09:07:16 星期五
http://fanshuyao.iteye.com/