业务场景：
全局封装了一个format的时间日期格式化方法，在当前.vue页面通过filters：{}或者Vue.filter定义过滤器，this为undefined
解决方案：
可以在methods:{ ... }中定义方法，替代filter
<el-table-column prop="syncRowVersion" :label="l('CreationTime')"> <template slot-scope="scope"> <span>{{ formatDate(scope.row.syncRowVersion) }}</span> </template> </el-table-column>
formatDate(value) { return this.$ux.format.dateTime(value); }
补充：
上面的 this.$ux.format.dateTime(value)，是在全局定义的foamat方法并在Vue.prototype中注入
/** * * 公用的时间日期、价格等格式化方法 */ import format from "number-format.js"; import moment from "moment"; export default { priceFormat: "#,##0.00", amountFormat: "#,##0.00", moneyFormat: "#,##0", costFormat: "#,##0.00", qtyFromat: "#,##0", currencyFormat: "#,##0.000000", weightFormat: "#,##0.0", volumeFormat: "#,##0.0", dateFormat: "YYYY-MM-DD", dateTimeFormat: "YYYY-MM-DD HH:mm:ss", elementDateFormat: "yyyy-MM-dd", elementDateTimeFormat: "yyyy-MM-dd HH:mm:ss", //通用数值格式,用于非price，amount，qty等特殊地方 numberFormat0: "#,##0", numberFormat2: "#,##0.00", dateTimebySales(dt, format = "DD/MM/YYYY HH:mm") { if (!dt) return ""; return moment(dt).format(format); }, date(dt, format = "YYYY/MM/DD") { if (!dt) return ""; return moment(dt).format(format); }, dateTime(dt, format = "YYYY/MM/DD HH:mm:ss") { if (!dt) return ""; return moment(dt).format(format); }, price(v) { return format(v, this.priceFormat); }, cost(v) { return format(v, this.costFormat); }, amount(v) { return format(v, this.amountFormat); }, qty(v) { return format(v, this.qtyFromat); }, columnFormatter(type) { let thiz = this; switch (type) { case "date": return function (row, column, cellValue, index) { return thiz.date(cellValue); }; case "dateTime": return function (row, column, cellValue, index) { return thiz.dateTime(cellValue); }; case "price": return function (row, column, cellValue, index) { return thiz.price(cellValue); }; case "amount": return function (row, column, cellValue, index) { return thiz.amount(cellValue); }; case "qty": return function (row, column, cellValue, index) { return thiz.qty(cellValue); }; case "cost": return function (row, column, cellValue, index) { return thiz.cost(cellValue); }; } }, };
