数字类型

certificatecodecopy = certificatecode.replace(/^(.{6})(?:\d+)(.{4})$/,  "\$1****\$2");

所有类型

enginenocopy = engineno.replace(/^(.{2})(?:\w+)(.{1})$/, "\$1****\$2");

enginenocopy = engineno.replace(/^(.{4})(?:\w+)(.{4})$/, "\$1****\$2");

vue中应用

<el-table-columnwidth="200px"prop="credentialsNum"label="身份证号码"align="center"><template slot-scope="scope"><p v-if="scope.row.credentialsNum != null && scope.row.credentialsNum != '' ">{{scope.row.credentialsNum.replace(/^(.{6})(?:\d+)(.{4})$/, "$1****$2")}}</p><p v-else>未知</p></template></el-table-column>

效果图: