我想在列表中单击添加活动类,我尝试了以下代码,但它在我的所有项目上添加了活动类:/:
HTML:
<div class="filters_ct" ng-controller="selectFilter">
<ul>
<li ng-repeat="filters in filter" ng-click="select(item)" ng-class="{sel: item == selected}">
<span class="filters_ct_status"></span>
{{filters.time}}
</li>
</ul>
</div>
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Js:
var filters = [
{
'filterId': 1,
'time': 'last 24 hours',
},
{
'filterId': 2,
'time': 'all',
},
{
'filterId': 3,
'time': 'last hour',
},
{
'filterId': 4,
'time': 'today',
},
{
'filterId': 5,
'time': 'yersteday',
}
];
function selectFilter($scope) {
$scope.items = ['filters'];
$scope.selected = $scope.items[0];
$scope.select= function(item) {
$scope.selected = item;
};
}
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拜托,给我一些帮助.
谢谢
我有一个规范化订单数据的大型数据库,查询报告变得非常慢.我在报告中使用的许多查询都会连接五到六个表,并且必须检查数十或数十万行.
有很多查询,大多数都已尽可能优化,以减少服务器负载和提高速度.我认为是时候开始以非规范化格式保存数据副本了.
关于方法的任何想法?我应该从几个最糟糕的问题开始,然后从那里开始?
所以我想知道是否有可能与该overflow:scroll
值有不同的起始位置;
当您开始滚动时div
,默认行为是从左向右滚动:
|<--Scrollbar-Starting-Left-->_________________________________________________|
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它可能从右边开始吗?
|_________________________________________________<--Scrollbar-Starting-Right-->|
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在我的例子中,red
和green
项目首先可见,我希望首先看到项目green
和blue
项目:)
我试过direction:rtl;
但没有运气
从"sdk/extras/android /"导入appcompat v7时,我的logcat中出现此错误
平台L是预览,需要应用程序清单将minSdkVersion设置为'L'
而清单就像
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2012 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or …
Run Code Online (Sandbox Code Playgroud) 我可以使用此代码制作滑块.但我不知道如何在3D中制作它.
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ImageButton;
import com.navdrawer.SimpleSideDrawer;
public class MainScreen extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main_screen);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment implements
OnClickListener {
private ImageButton _Menu;
private SimpleSideDrawer slide_me;
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater …
Run Code Online (Sandbox Code Playgroud) 如何在不使用html的情况下将其他网站的某些图片的网址插入到css中?试过这个
content:url(url);
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并且也用来background-image
代替content
.当我在Internet Explorer和Chrome上运行它时,网页上看不到图像.我不允许编辑HTML代码.
HTML:
<body>
<div class = "container">
<div class = "nav">
<ul class = "pull-left">
<li><a class = "brand" href = "/">New York Guide</a></li>
</ul>
<ul class = "pull-right">
<li><a href = "#">Sign Up</a></li>
<li><a href = "#">Log In</a></li>
<li><a href = "#">Help</a></li>
</ul>
</div>
</div>
</body>
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CSS:
.nav li {
display: inline;
}
.nav a {
color: white;
font-size: 12px;
font-weight: bold;
padding: 14px 10px;
text-transform: uppercase;
}
.nav {
background-color: #7f7f7f;
}
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目前,我的导航栏的文本靠近灰色栏的顶部。有没有办法将它垂直居中?
我需要使用填充或边距标签吗?或者完全是别的什么?
我有以下mysql命令来删除外键约束:
ALTER TABLE network_profile DROP FOREIGN KEY 'FK98875604AC3BAD33';
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但我更愿意使用SELECT语句首先发现外键constraint_id并在ALTER TABLE命令中使用它,但是不成功.这可能吗?
尝试:
ALTER TABLE network_profile DROP FOREIGN KEY (SELECT constraint_name FROM information_schema.key_column_usage WHERE column_name = 'mt_check_list' AND table_schema = 'mydb');
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还尝试过:
SELECT @constraint_name := constraint_name FROM information_schema.key_column_usage WHERE column_name = 'mt_check_list' AND table_schema = 'mydb';
ALTER TABLE network_profile DROP FOREIGN KEY @constraint_name;
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请帮忙?
映射以下内容的最佳方法是什么:
[|"A"; "B"; "C"; "D"|]
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至
[|("","A","B"); ("A","B","C"); ("B","C","D"); ("C","D","")|]
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?
我遇到了最简单的代码问题,我确定它的东西很愚蠢.当我把';' 在主要功能之后,它说出了旧式格式化列表的内容.所以,当我删除它时,它说有一个';' 在')之前失踪.任何帮助将不胜感激,代码如下:
#include "stdafx.h"
#include <iostream>
using namespace std;
int _tmain(int argc, _TCHAR* argv[]) {
int i;
for (i = 0, i < 10, i++)
cout << i << endl;
system("pause");
return 0;
}
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顺便说一下,这一切都在视觉工作室表达中,对于for循环而言,放置{}对结果没有任何影响.