首页 >> js开发 >> js微信小程序实现菜单左右联动js大全
js微信小程序实现菜单左右联动js大全
发布时间: 2021年1月13日 | 浏览:
| 分类:js开发
本文实例为大家分享了微信小程序实现菜单左右联动的具体代码，供大家参考，具体内容如下今天记录一个个人写的二级联动示例。下面是效果图：功能实现关键是使用控件scroll-view，下面直接上示例代码。页面对应的js文件：
Page({
data: {
select_index:0,
scroll_height:0,
left: [{
id: 1,
title: '选项一'
},
{
id: 2,
title: '选项二'
},
{
id: 3,
title: '选项三'
},
{
id: 4,
title: '选项四'
},
{
id: 5,
title: '选项五'
},
{
id: 6,
title: '选项六'
},
{
id: 7,
title: '选项七'
}
],
right:[
{
id: 1,
title: '选项一',
content:[
{
title:"产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 2,
title: '选项二',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 3,
title: '选项三',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 4,
title: '选项四',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 5,
title: '选项五',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 6,
title: '选项六',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 7,
title: '选项七',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
}
]
},
// 右边scroll-view滑动事件
scroll:function(e){
var h = e.detail.scrollTop
var scroll_height = 0;
var select_index;
for (var i = 0; i < this.data.right.length; i++) {
if (scroll_height >= h){
select_index = i;
break;
}
scroll_height += this.data.right[i].content.length * 64 + 48;
}
this.setData({
select_index: i,
});
},
//左边点击事件
left_tap:function(e){
var scroll_height = 0;
for (var i = 0; i < e.target.dataset.index;i++){
scroll_height += this.data.right[i].content.length * 64 + 48;
}
console.log(scroll_height)
this.setData({
scroll_height: scroll_height,
select_index: e.target.dataset.index,
});
}
})
Page({
data: {
select_index:0,
scroll_height:0,
left: [{
id: 1,
title: '选项一'
},
{
id: 2,
title: '选项二'
},
{
id: 3,
title: '选项三'
},
{
id: 4,
title: '选项四'
},
{
id: 5,
title: '选项五'
},
{
id: 6,
title: '选项六'
},
{
id: 7,
title: '选项七'
}
],
right:[
{
id: 1,
title: '选项一',
content:[
{
title:"产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 2,
title: '选项二',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 3,
title: '选项三',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 4,
title: '选项四',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 5,
title: '选项五',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 6,
title: '选项六',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 7,
title: '选项七',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
}
]
},
// 右边scroll-view滑动事件
scroll:function(e){
var h = e.detail.scrollTop
var scroll_height = 0;
var select_index;
for (var i = 0; i < this.data.right.length; i++) {
if (scroll_height >= h){
select_index = i;
break;
}
scroll_height += this.data.right[i].content.length * 64 + 48;
}
this.setData({
select_index: i,
});
},
//左边点击事件
left_tap:function(e){
var scroll_height = 0;
for (var i = 0; i < e.target.dataset.index;i++){
scroll_height += this.data.right[i].content.length * 64 + 48;
}
console.log(scroll_height)
this.setData({
scroll_height: scroll_height,
select_index: e.target.dataset.index,
});
}
})页面对应的wxml文件：
{{item.title}}
{{item.title}}
{{item.title}}
{{item.title}}
{{item.title}}
{{item.title}}
Page({
data: {
select_index:0,
scroll_height:0,
left: [{
id: 1,
title: '选项一'
},
{
id: 2,
title: '选项二'
},
{
id: 3,
title: '选项三'
},
{
id: 4,
title: '选项四'
},
{
id: 5,
title: '选项五'
},
{
id: 6,
title: '选项六'
},
{
id: 7,
title: '选项七'
}
],
right:[
{
id: 1,
title: '选项一',
content:[
{
title:"产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 2,
title: '选项二',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 3,
title: '选项三',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 4,
title: '选项四',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 5,
title: '选项五',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 6,
title: '选项六',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 7,
title: '选项七',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
}
]
},
// 右边scroll-view滑动事件
scroll:function(e){
var h = e.detail.scrollTop
var scroll_height = 0;
var select_index;
for (var i = 0; i < this.data.right.length; i++) {
if (scroll_height >= h){
select_index = i;
break;
}
scroll_height += this.data.right[i].content.length * 64 + 48;
}
this.setData({
select_index: i,
});
},
//左边点击事件
left_tap:function(e){
var scroll_height = 0;
for (var i = 0; i < e.target.dataset.index;i++){
scroll_height += this.data.right[i].content.length * 64 + 48;
}
console.log(scroll_height)
this.setData({
scroll_height: scroll_height,
select_index: e.target.dataset.index,
});
}
})
Page({
data: {
select_index:0,
scroll_height:0,
left: [{
id: 1,
title: '选项一'
},
{
id: 2,
title: '选项二'
},
{
id: 3,
title: '选项三'
},
{
id: 4,
title: '选项四'
},
{
id: 5,
title: '选项五'
},
{
id: 6,
title: '选项六'
},
{
id: 7,
title: '选项七'
}
],
right:[
{
id: 1,
title: '选项一',
content:[
{
title:"产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 2,
title: '选项二',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 3,
title: '选项三',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 4,
title: '选项四',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 5,
title: '选项五',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 6,
title: '选项六',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
},
{
id: 7,
title: '选项七',
content: [
{
title: "产品一"
},
{
title: "产品二"
},
{
title: "产品三"
},
{
title: "产品四"
},
]
}
]
},
// 右边scroll-view滑动事件
scroll:function(e){
var h = e.detail.scrollTop
var scroll_height = 0;
var select_index;
for (var i = 0; i < this.data.right.length; i++) {
if (scroll_height >= h){
select_index = i;
break;
}
scroll_height += this.data.right[i].content.length * 64 + 48;
}
this.setData({
select_index: i,
});
},
//左边点击事件
left_tap:function(e){
var scroll_height = 0;
for (var i = 0; i < e.target.dataset.index;i++){
scroll_height += this.data.right[i].content.length * 64 + 48;
}
console.log(scroll_height)
this.setData({
scroll_height: scroll_height,
select_index: e.target.dataset.index,
});
}
})页面对应的wxml文件：
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