El encabezado de la tabla ele se almacena en caché en el navegador después de ajustar el ancho

Utilice el método header-dragend del formulario ele

// 拖动表头
        headerDragend (newWidth, oldWidth, column, event) {
            setTimeout(() => {
                // console.log(newWidth)
                // console.log('拖动表头改变列宽')
                let applyTableColWidths = []
                let applyTable = document.getElementById('applyTable')
                console.log(applyTable)
                let applyTableColgroup = applyTable.getElementsByTagName('colgroup')[0]
                let applyTableCol = applyTableColgroup.getElementsByTagName('col')
                for (var i = 0; i < applyTableCol.length - 1; i++) {
                    applyTableColWidths.push(applyTableCol[i].width)
                }
                let newArr = applyTableColWidths.slice(0, -1);
                localStorage.setItem('applyTableColWidths', JSON.stringify(newArr))
            }, 100)
        },

//获取浏览器缓存的列宽 放在mounted里
        getTableColWidth () {
            let self = this
            let tableWidth = localStorage.getItem('applyTableColWidths')
            if (tableWidth) {
                for (var item = 0; item < self.tableColumns.length; item++) {
                    self.tableColumns[item].width = JSON.parse(tableWidth)[item]
                }
            }
        },