D_Three
D_Three
  • 发布:2019-08-01 00:39
  • 更新:2019-08-01 00:40
  • 阅读:982

样式的动态绑定,为什么使用执行类不会有效

分类:uni-app
使用<view :class="'red'"></view>可生效

但使用<view :class="testMethods"></view>却不生效

此时testMethods 返回值为'green'

<template>
<view class="content">
<view >二维码数据是:{{result}}</view>
<button class="btn" type="primary" @tap="open"></button>
<view :class="'red'"></view>
</view>

</template>

<script>
export default {
data() {
return {
text: '请将二维码放入框内,即可自动扫描',
type:'scan-listener',
result:'',//获取到的二维码内容,根据自己需求处理结果
systemInfo:{},
status:1,
green:'#ff0000',

        }  
    },  

    methods: {  
        open() {  

        },  
        testMethods(){  
            var _status = this.status;  
            console.log("_status"+_status);  
            var ret = '';  
            if(_status == 1){  
                ret = "'green'"  
            }else if(_status == 2){  
                ret =  "'red'"  
            }else if(_status == 3){  
                ret =  "'black'"  
            }else{  
                ret =  "'blue'"  
            }  
            console.log("ret ="+ ret);  
            return ret;  
        }  
    },  
    //'../add_device/scancode/scancode?text=' + this.text + '&type=' + this.type,  
    onReady() {  
        // #ifdef APP-PLUS  
        // #endif  
    },  
    onLoad() {  
        // #ifdef APP-PLUS  
        this.$eventHub.$on(this.type, function(data) {  
            console.log(data);  
            this.text = data;  
        });  
        // #endif  
    },  
    onBackPress() {  
        // #ifdef APP-PLUS  
        plus.screen.lockOrientation('portrait-primary')  
        // #endif  
    },  
    onShow() {  
    }   

}  

</script>

<style>
.test-img{
width: 248rpx;
height: 248rpx;
background-image: '/static/720/gateway.png';
}
.content{
width: 100%;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
.green{
width: 100rpx;
height: 100rpx;
background: #09BB07;
}
.red{
width: 100rpx;
height: 100rpx;
background: #FF0000;
}
.blue{
width: 100rpx;
height: 100rpx;
background: #4272FF;
}
.black{
width: 100rpx;
height: 100rpx;
background: #000000
;
}
.btn{
width: 50%;
}
</style>

2019-08-01 00:39 负责人:无 分享
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D_Three

D_Three (作者)

生效为
<view :class="'red'"></view>
不生效的部分为
<view :class="testMethods"></view>

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