wxml：

 

<view class='button_container'>

<block wx:for="{

{buttons}}" wx:key="buttons">

<button class='{

{item.checked?"checked_button":"normal_button"}}' data-id='{

{item.id}}' bindtap='radioButtonTap'>{

{item.name}}</button>

</block>

</view>

 

js;

data:{

buttons: [{ id: 1, name: '失物招领' }, { id: 2, name: '寻物启事' }]

}

onLoad: function() {//默认选了第一个

this.data.buttons[0].checked = true;

this.setData({

buttons: this.data.buttons,

})

}

 

radioButtonTap: function (e) {

console.log(e)

let id = e.currentTarget.dataset.id

console.log(id)

for (let i = 0; i < this.data.buttons.length; i++) {

if (this.data.buttons[i].id == id) {

//当前点击的位置为true即选中

this.data.buttons[i].checked = true;

}

else {

//其他的位置为false

this.data.buttons[i].checked = false;

}

}

this.setData({

buttons: this.data.buttons

})

},

 

css：

.button_container{

display: flex;

flex-direction: row;

justify-content: space-around

}

/* 按钮未选中 */

.normal_button{

background: white；

}

/* 按钮选中 */

.checked_button{

background: #36ab60;

color: white

}