JavaScript------如何解决表单登录信息输入为空显示提示
<form name="fname" method="post" action="../Home/Login" onsubmit="return My();"> <input type="text" name="user" /> <input type="submit" value="提交"/> </form>
function My() { var s = document.forms["fname"]["user"].value; if (s == null || s == "") { alert("不能为空"); return false; } }