如果表单上的字段为空，单击按钮以指示错误时会触发css。但是，这仅在页面不在母版页内时才有效。当页面在母版页中并且单击按钮时，出现此错误：这是css上的代码： [ Alert validate ]*/.validate-input { position: relative;}.alert-validate::before { content: attr(data-validate); position: absolute; max-width: 70%; background-color: #fff; border: 1px solid #c80000; border-radius: 3px; padding: 4px 25px 5px 10px; top: 50%; -webkit-transform: translateY(-50%); -moz-transform: translateY(-50%); -ms-transform: translateY(-50%); -o-transform: translateY(-50%); transform: translateY(-50%); right: 12px; pointer-events: none; font-family: Ubuntu-Regular; color: #c80000; font-size: 14px; line-height: 1.4; text-align: left; visibility: hidden; opacity: 0; -webkit-transition: opacity 0.4s; -o-transition: opacity 0.4s; -moz-transition: opacity 0.4s; transition: opacity 0.4s;}.alert-validate::after { content: "\f12a"; font-family: FontAwesome; display: block; position: absolute; color: #c80000; font-size: 18px; top: 50%; -webkit-transform: translateY(-50%); -moz-transform: translateY(-50%); -ms-transform: translateY(-50%); -o-transform: translateY(-50%); transform: translateY(-50%); right: 18px;}.alert-validate:hover:before { visibility: visible; opacity: 1;}@media (max-width: 992px) { .alert-validate::before { visibility: visible; opacity: 1; }}
1 回答
慕慕森
TA贡献1856条经验 获得超17个赞
母版页应如下所示：
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs"
Inherits="MasterPage" %>
<!DOCTYPE html>
<html>
<head runat="server">
<title></title>
<%--all meta tags--%>
<%--all scripts put here will be available to every page that uses this master.--%>
<asp:ContentPlaceHolder id="head" runat="server">
<%--note this content placeholder in the head. don't put anything in it yet.
it will be available to pages that use this master.--%>
</asp:ContentPlaceHolder>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
<%--add script tags and links-to-js before the closing body tag.
they will be available to every page that uses this master page.--%>
</body>
</html>
使用母版页的表单将如下所示：
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master"
AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<%--this is the content placeholder from the head of the master.
add styles and links-to-css for use on just this page.--%>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
content for this page.
<%--add scripts for just this page.--%>
</asp:Content>
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