Use WeChat applet to implement banner carousel image

This article introduces the effect of using WeChat applet to achieve banner carousel. It has certain reference value. I hope it will be helpful to friends who are learning WeChat applet development!

Use WeChat applet to implement banner carousel image

In the work of front-end engineers, banners are essential. So how does a small program that lacks DOM implement a banner diagram? Just like other frameworks encapsulate different methods of banner diagrams, small programs also encapsulate banner methods. Let me explain them one by one:

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1: Preparation

I will use two pictures, as shown below:

Two: Write xsml code (i.e. html)

If we use Tag to wrap, he has the following attributes:

These attributes are enough for us. In order to keep the xsml page simple, I use a for loop here to put the used resources Enter js to loop. And in order to enable two-way binding of data, I plan to put its attribute values in js for configuration. My xsml code is as follows:

Three: js configuration

Since it is a two-way binding, we only need to configure the required parameters in js. Since my two pictures use 1.jpg and 2.jpg, I only need to perform a small loop in js. This depends on the situation. You can also put the address of the picture directly in In the array; after the final change, remember to setData, otherwise it will have no effect. The js code is as follows:

Page({ /** * 页面的初始数据 */ data: { mode:"scaleToFill", arr:[], indicatorDots: true, autoplay: true, interval: 2000, duration: 1000, }, /** * 生命周期函数--监听页面加载 */ onLoad: function (options) { var array = this.data.arr for (let i = 1; i < 3; i++) { array.push("img/" + i + ".jpg") } this.setData({ arr: array}) }, /** * 生命周期函数--监听页面初次渲染完成 */ onReady: function () { }, /** * 生命周期函数--监听页面显示 */ onShow: function () { }, /** * 生命周期函数--监听页面隐藏 */ onHide: function () { }, /** * 生命周期函数--监听页面卸载 */ onUnload: function () { }, /** * 页面相关事件处理函数--监听用户下拉动作 */ onPullDownRefresh: function () { }, /** * 页面上拉触底事件的处理函数 */ onReachBottom: function () { }, /** * 用户点击右上角分享 */ onShareAppMessage: function () { }, /** * 页面上拉触底事件的处理函数 */ onReachBottom: function () { }, /** * 页面相关事件处理函数--监听用户下拉动作 */ onPullDownRefresh: function () { }, })

Okay, let’s take a look at the final effect:

Some small details still require you to adjust the xsss code yourself.

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