摘要：
watchStyle () { const el_class_parent = document.querySelector('要监听的元素') const observer = new MutationObserver(callback) var that = this function call 阅读全文
摘要：
## Elementui form自定义正则 ```javascript businessCertNo: [ { required: true, message: '请输入xxxxxxx', trigger: 'blur' }, { validator: reg_businessCertNo, tr 阅读全文