Vue small knowledge points record

1. Introduce pictures into the vue component (there are many methods, here I will record the one I commonly use)

background-image: url('~@/assets/XXX.png');

2. Use elementUI form verification to verify/cancel verification of only one item individually

// <el-form ref="dataForm" :rules="rules">
// <el-form-item label="身份证" prop="test"></el-form-item>
//</el-form>
this.$refs['dataForm'].validateField('test') //进行验证
this.$refs['dataForm'].clearValidate('test') //取消验证