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css：page-break-before:always和page-break-after:always的区别
- 黄舟Original
- 2018-05-15 09:48:405013browse
page- break-before and page-break-after CSSproperties will not modify the display of the web page on the screen. These two properties are used to control the printing of the file. Way. Each printing attribute can be set to 4 setting values: auto, always, left and right. Among them, Auto is the default value. Only when necessary, you need to set the Page break symbol (Page breaks). If page-break-before is set to always, the printer will restart a new printing page when encountering a specific component. If page-break-before is set to left, page break symbols will be inserted until the specified component appears on a left blank page. If page-break-before is set to right, page break symbols will be inserted until the specified component appears on a blank page on the right. The page-break-after attribute will add the page break symbol after the specified component, not before. In the following procedure you will be able to see the settings of these properties.
The above is the result from Baidu
The red paragraph, when encountering a specific component, the printer will restart a new printing page
What does this specific component refer to?
What is the other difference between the two, I don’t understand much
<HTML> <HEAD> <TITLE>Listing 14-4</TITLE> </HEAD> <BODY> <DIV>This is the first DIV.</DIV> <DIV STYLE="page-break-before:always">This is the second DIV.</DIV> <DIV STYLE="page-break-after:always">This is the third DIV.</DIV> <DIV>This is the fourth DIV.</DIV> <DIV STYLE="page-break-before:right">This is the fifth DIV.</DIV> <DIV STYLE="page-break-after:right">This is the sixth DIV.</DIV> <DIV>This is the last DIV.</DIV> </BODY> </HTML>
The following code has also been passed, using IE7, the effect in the print preview is the same
before is Insert a page feed character in front of the box model and
after.
You can use 1.html
<style>
h2{page-break-after: always;}
</style>
1
<h2>---这个在前1页---</h2>
2
<h2>---这个在前2页---</h2>and 2.html
<style>
h2{page-break-before: always;}
</style>
1
<h2>---这个在前2页---</h2>
2
<h2>---这个在前3页---</h2>to test and you will see that the printing effect is different
The most intuitive thing is Use examples to understand.
Note that the css defines whether the line break is inserted before h2 or after h2
CSS Or try it yourself and see the effect.
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