標籤：name jquer var orm tle method return pos length
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head> <meta charset="UTF-8"/> <title>Title</title> <style> .error{ color: red; } </style></head><body><form id="ff" method="post"> <div><input type="text"/></div> <div><input type="password"/></div> <div><input type="text"/></div> <div><input type="text"/></div> <div><input type="text"/></div> <div><input type="submit" value="提交"/></div></form><script src="jquery-1.12.4.js"></script><script> $(‘:submit‘).click(function () { $(‘.error‘).remove() var flag = true; $(‘#ff‘).find(‘input[type="text"],input[type="password"]‘).each(function () { var tag = $(this).val(); if (tag.length <= 0) { flag = false; var v= document.createElement(‘span‘); v.innerHTML = ‘必填‘; v.className=‘error‘; $(this).after(v) return false// 只提示第一個 return false } }) return flag; })</script></body></html>提交表單驗證
python :表單驗證--對每一個輸入框進行驗證
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