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js limits the number of checkboxes and php gets multiple checkboxes in-depth analysis_PHP tutorial

WBOY
Release： 2016-07-21 14:59:38
Original
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The first is the js code that limits the number of checkboxes:

Copy the code The code is as follows:

"http://www.w3.org/TR/html4/loose.dtd">
< html>


Restrict checkbox selection Quantity
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