<!DOCTYPE html><html><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><script type="text/javascript" src="jquery.js"></script><script type="text/javascript"> $(function () { $('input').bind('input propertychange', function() { $len = $(this).val().length; if ($len == 0) { $('span').html(''); } else if ($len >= 6) { $('span').html($(this).val().length).css('color', 'black'); } else { $('span').html($(this).val().length).css('color', 'red'); } }) })</script></head><body> <form> <input maxlength="12" type="password" placeholder="password"> <span></span> </form></body></html>通过右键菜单菜单中的剪切和删除命令删除内容的时候不会触发, 怎么能触发呢?
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