通过本文主要向大家介绍了下拉菜单求和实例,combobox下拉菜单实例,微信小程序下拉菜单,小程序下拉菜单,js下拉菜单特效代码等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com
微信小程序 下拉菜单简单实例
wcss
/**DropDownMenu**/
/*总菜单容器*/
.menu {
display: block;
height: 28px;
position: relative;
}
/*一级菜单*/
.menu dt {
font-size: 15px;
float: left;
/*hack*/
width: 33%;
height: 38px;
border-right: 1px solid #d2d2d2;
border-bottom: 1px solid #d2d2d2;
text-align: center;
background-color: #f4f4f4;
color: #5a5a5a;
line-height: 38px;
z-index: 2;
}
/*二级菜单外部容器样式*/
.menu dd {
position: absolute;
width: 100%;
margin-top: 40px;
left: 0;
z-index: -99;
}
/*二级菜单普通样式*/
.menu li {
font-size: 14px;
line-height: 34px;
color: #575757;
height: 34px;
display: block;
padding-left: 8px;
background-color: #fff;
border-bottom: 1px solid #dbdbdb;
}
/*二级菜单高亮样式*/
.menu li.highlight {
background-color: #f4f4f4;
color: #48c23d;
}
/* 显示与隐藏 */
.show {
/*display: block;*/
visibility: visible;
}
.hidden {
/*display: none;*/
visibility: hidden;
}
</div>
wxml
<dl class="menu">
<block wx:for="{{reportData}}" wx:key="idMenu" wx:for-item="menuItem" wx:for-index="idMenu">
<dt data-index="{{idMenu}}" bindtap="tapMainMenu">{{menuItem.reportType}}</dt>
<dd class="{{subMenuDisplay[idMenu]}}" animation="{{animationData[idMenu]}}">
<ul wx:for="{{menuItem.chilItem}}" wx:key="chilItem.ID" wx:for-item="chilItem" wx:for-index="idChil">
<li class="{{subMenuHighLight[idMenu][idChil]}}" bindtap="tapSubMenu" data-index="{{idMenu}}-{{idChil}}">{{chilItem.Name}}</li>
</ul>
<picker class="timePicker" mode="date" value="{{dateValue}}" bindchange="datePickerBindchange" start="1999-01-01" end="2999-12-12"> 时间：{{dateValue}}</picker>
</dd>
</block>
</dl>
</div>
js
//数据源
var ReportDataSync = [
{
reportType: "日报1",
chilItem: [
{ ID: 1, Name: "日报1", ReportUrl: "DailyReport.aspx", Type: 1 },
{ ID: 2, Name: "日报2", ReportUrl: "DailyReport.aspx", Type: 1 },
{ ID: 3, Name: "日报3", ReportUrl: "DailyReport.aspx", Type: 1 }]
},
{
reportType: "目录2",
chilItem: [
{ ID: 1, Name: "目录1", ReportUrl: "DailyReport.aspx", Type: 2 },
{ ID: 2, Name: "目录2", ReportUrl: "DailyReport.aspx", Type: 2 },
{ ID: 3, Name: "目录3", ReportUrl: "DailyReport.aspx", Type: 2 },
{ ID: 4, Name: "目录4", ReportUrl: "DailyReport.aspx", Type: 2 }]
},
{
reportType: "月报3",
chilItem: [
{ ID: 1, Name: "月报1", ReportUrl: "DailyReport.aspx", Type: 1 },
{ ID: 2, Name: "月报2", ReportUrl: "DailyReport.aspx", Type: 2 }]
}
]
//定义字段
var initSubMenuDisplay = []
var initSubMenuHighLight = []
var initAnimationData = []
/// 初始化DropDownMenu
loadDropDownMenu()
that.setData({
reportData: ReportDataSync,//菜单数据
subMenuDisplay: initSubMenuDisplay, //一级
subMenuHighLight: initSubMenuHighLight, //二级
animationData: initAnimationData //动画
})
//一级菜单点击
tapMainMenu: function (e) {
//获取当前一级菜单标识
var index = parseInt(e.currentTarget.dataset.index);
//改变显示状态
for (var i = 0; i < initSubMenuDisplay.length; i++) {
if (i == index) {
if (this.data.subMenuDisplay[index] == "show") {
initSubMenuDisplay[index] = 'hidden'
} else {
initSubMenuDisplay[index] = 'show'
}
} else {
initSubMenuDisplay[i] = 'hidden'
}
}
this.setData({
subMenuDisplay: initSubMenuDisplay
})
this.animation(index)
},
//二级菜单点击
tapSubMenu: function (e) {
//隐藏所有一级菜单
//this.setData({
//subMenuDisplay: initSubMenuDisplay()
//});
// 当前二级菜单的标识
var indexArray = e.currentTarget.dataset.index.split('-');
// 删除所在二级菜单样式
for (var i = 0; i < initSubMenuHighLight.length; i++) {
if (indexArray[0] == i) {
for (var j = 0; j < initSubMenuHighLight[i].length; j++) {
initSubMenuHighLight[i][j] = '';
}
}
}
//给当前二级菜单添加样式
initSubMenuHighLight[indexArray[0]][indexArray[1]] = 'highlight';
//刷新样式
this.setData({
subMenuHighLight: initSubMenuHighLight
});
// 设置动画
this.animation(indexArray[0]);
},
//菜单动画
animation: function (index) {
// 定义一个动画
var animation = wx.createAnimation({
duration: 400,
timingFunction: 'linear',
})
// 是显示还是隐藏
var flag = this.data.subMenuDisplay[index] == 'show' ? 1 : -1;
// 使之Y轴平移
animation.translateY(flag * ((initSubMenuHighLight[index].length + 1) * 38)).step();
// 导出到数据，绑定给view属性
var animationStr = animation.export();
// 原来的数据
var animationData = this.data.animationData;
animationData[index] = animationStr;
this.setData({
animationData: animationData
});
}
/// <summary>
/// 初始化DropDownMenu
/// 1.一级目录 initSubMenuDisplay ：['hidden']
/// 2.二级目录 initSubMenuHighLight ：[['',''],['','','','']]]
/// </summary>
function loadDropDownMenu() {
for (var i = 0; i < ReportDataSync.length; i++) {
//一级目录
initSubMenuDisplay.push('hidden')
//二级目录
var report = []
for (var j = 0; j < ReportDataSync[i].chilItem.length; j++) {
report.push([''])
}
initSubMenuHighLight.push(report)
//动画
initAnimationData.push("")
}
}
</div>
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