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File file control, select a file (picture, flash, video) to preview and display immediately_form special effects

WBOY
Release： 2016-05-16 18:54:20
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We usually use the file control to upload files. To preview, sometimes the page will be refreshed. As a result, the file control is cleared. Many people ask if they can not clear or reassign the value. This is impossible for security reasons. So how to preview without refreshing? Here I will write down the method I used.
Select page:

Copy code The code is as follows:



Display:
Copy code The code is as follows:

< ;div id="showimg">

Related labels：
file
source：php.cn
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