前言：在小程序的开发中，我们在view中便利data中数组或对象时，很多情况下需要在js中动态改变数组或者对象中某一香的属性值。

效果图：

我给大家总结了案例如下：

wxml如下：

{{item.week}}

{{item.date}}

wxss如下：

.hd-cont {

height: 126rpx;

white-space: nowrap;

padding-left: 20rpx;

color: #fff;

font-size: 28rpx;

box-sizing: border-box;

}

.date-cont {

width: 40rpx;

margin-right: 70rpx;

height: 100%;

display: inline-block;

padding-top: 10rpx;

box-sizing: border-box;

text-align: center;

}

.curl {

width: 40rpx;

height: 40rpx;

border-radius: 50%;

line-height: 40rpx;

}

.date-cont view:first-child {

margin-bottom: 20rpx;

}

.focus {

display: inline-block;

width: 40rpx;

height: 40rpx;

font-family: Monaco;">#fff;

color: #16cc80;

border-radius: 50%;

line-height: 40rpx;

}

wxjs如下：

实现思路：点击某一个日期时，获取当前点击的下表，点击事件bindtap可以获取到所点击的元素的自定义属性，也就是所点击的元素的在data中数组的下标，点击触发，清空所有对象中selected的值，然后将所点击的下标的selected值变为focus就可实现点击某一元素动态改变数组中的某一属性值。

Page({

data: {

sDate: [

{ "week": "日", "date": "01" ,"selected": "focus" },

{ "week": "一", "date": "02", "selected": " " },

{ "week": "二", "date": "03", "selected": " " },

{ "week": "三", "date": "04", "selected": " " },

{ "week": "四", "date": "05", "selected": " " },

{ "week": "五", "date": "06", "selected": " " },

{ "week": "六", "date": "07", "selected": " " },

{ "week": "日", "date": "08", "selected": " " },

{ "week": "一", "date": "09", "selected": " " },

{ "week": "二", "date": "10", "selected": " " },

{ "week": "三", "date": "11", "selected": " " },

{ "week": "四", "date": "12", "selected": " " },

{ "week": "五", "date": "13", "selected": " " },

{ "week": "六", "date": "14", "selected": " " },

]

},

select: function (e) {

var oIndex = e.currentTarget.dataset.index;

var array = this.data.sDate;

array.forEach( (item,index,arr) => {

var sItem = "sDate["+ index + "].selected";

this.setData({

[sItem]: " "

})

console.log([sItem]);

if(index == oIndex) {

var oSelected = "sDate[" + index + "].selected"//这里需要将设置的属性用字符串进行拼接

this.setData({

[oSelected]: "focus"

})

}

})

},

})

总结

以上所述是小编给大家介绍的微信小程序开发之改变data中数组或对象的某一属性值，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！