关于element-ui:动态选择表头的隐藏和显示elementui的table表格

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起因:因为 elementui 的表格没有做动静渲染表头的操作,本人封装了一个

步骤一:建设 vue 组件

<template>
    <div class="operate-btn">
        <el-button class="o-ml-12" icon="el-icon-s-operation" v-preventReClick type="success" size="mini" @click="headFilterShow"
            > 显示项调整 </el-button
        >
        <!-- 筛选穿梭框 -->
        <el-dialog :close-on-click-modal="false" v-dialogDrag :visible.sync="headFilter.visible" title="显示项调整" width="536px">
            <el-form label-position="right" label-width="100px" :model="coefficientAdjustShowForm">
                <el-form-item label="测试字段:">
                    <el-checkbox
                        :indeterminate="coefficientAdjustShowForm.options1IsInde"
                        v-model="coefficientAdjustShowForm.option1CheckAll"
                        @change="option1CheckAllChg"
                        > 全选 </el-checkbox
                    >
                    <el-checkbox-group @change="options1CheckChg" v-model="coefficientAdjustShowForm.options1">
                        <el-checkbox v-for="item in headerShowList.option1" :label="item" :key="item">{{item}}</el-checkbox>
                    </el-checkbox-group>
                </el-form-item>
                <el-form-item label="试验字段:">
                    <el-checkbox
                        :indeterminate="coefficientAdjustShowForm.options2IsInde"
                        v-model="coefficientAdjustShowForm.option2CheckAll"
                        @change="option2CheckAllChg"
                        > 全选 </el-checkbox
                    >
                    <el-checkbox-group @change="options2CheckChg" v-model="coefficientAdjustShowForm.options2">
                        <el-checkbox v-for="item in headerShowList.option2" :label="item" :key="item">{{item}}</el-checkbox>
                    </el-checkbox-group>
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button v-preventReClick @click="headFilter.visible = false"> 取 消 </el-button>
                <el-button v-preventReClick type="primary" @click="handleClickUpdateThead"> 确 定 </el-button>
            </div>
        </el-dialog>
    </div>
</template>
<script>
export default {
    name: 'tableHeadAdjust',
    props: ['tableData', 'headerShowList', 'headFilter', 'curThis'],
    data() {
        return {
            coefficientAdjustShowForm: {options1: [],
                options2: [],
                option1CheckAll: false,
                option2CheckAll: false,
                options1IsInde: true,
                options2IsInde: true
            }
        };
    },
    methods: {
        // 单选
        options1CheckChg(value) {
            let checkedCount = value.length;
            this.coefficientAdjustShowForm.option1CheckAll = checkedCount === this.headerShowList.option1.length;
            this.coefficientAdjustShowForm.options1IsInde = checkedCount > 0 && checkedCount < this.headerShowList.option1.length;
        },
        options2CheckChg(value) {
            let checkedCount = value.length;
            this.coefficientAdjustShowForm.option2CheckAll = checkedCount === this.headerShowList.option2.length;
            this.coefficientAdjustShowForm.options2IsInde = checkedCount > 0 && checkedCount < this.headerShowList.option2.length;
        },
        // 全选
        option1CheckAllChg(val) {this.coefficientAdjustShowForm.options1 = val ? this.headerShowList.option1 : [];
            this.coefficientAdjustShowForm.options1IsInde = false;
        },
        option2CheckAllChg(val) {this.coefficientAdjustShowForm.options2 = val ? this.headerShowList.option2 : [];
            this.coefficientAdjustShowForm.options2IsInde = false;
        },
        headFilterShow() {
            this.curThis.headFilter.visible = true;
            // 解决点击 CheckBox 时候,动静扭转了表头的数值
            this.$nextTick(() => {
                this.coefficientAdjustShowForm.options1 = this.curThis.headFilter.value.option1;
                this.coefficientAdjustShowForm.options2 = this.curThis.headFilter.value.option2;
                this.options1CheckChg(this.coefficientAdjustShowForm.options1);
                this.options2CheckChg(this.coefficientAdjustShowForm.options2);
            });
        },
        handleClickUpdateThead() {
            // 当表头数据特地多的时候清空 table 数据,解决卡顿问题
            // this.curThis.tableData = [];
            // 排序
            let list1 = [];
            let option1 = this.curThis.headerShowList.option1;
            if (option1.length > 0) {option1.forEach((item) => {if (this.coefficientAdjustShowForm.options1.length > 0) {this.coefficientAdjustShowForm.options1.forEach((item1) => {if (item == item1) {list1.push(item);
                            }
                        });
                    }
                });
            }
            let list2 = [];
            let option2 = this.curThis.headerShowList.option2;
            if (option2.length > 0) {option2.forEach((item) => {if (this.coefficientAdjustShowForm.options2.length > 0) {this.coefficientAdjustShowForm.options2.forEach((item1) => {if (item == item1) {list2.push(item);
                            }
                        });
                    }
                });
            }
            this.curThis.headFilter.value.option1 = list1;
            this.curThis.headFilter.value.option2 = list2;
            // 贮存到 storage 外面
            this.curThis.king_setConceal(this.curThis.$route.path, this.curThis.headFilter.value);
            this.headFilter.visible = false;
            // // 触发扭转
            // this.$emit('headFilterShowChg');
        }
    }
};
</script>
<style>
</style>

步骤二:建设 vue 单页面

<template>
    <div>
        <tableHeadAdjust :tableData="tableData" :headerShowList="headerShowList" :headFilter="headFilter" :curThis="this"></tableHeadAdjust>
        <el-table :data="tableData" style="width: 100%">
            <el-table-column prop="date" label="日期" width="180"> </el-table-column>
            <el-table-column prop="name" label="姓名" width="180"> </el-table-column>
            <!-- 形式一:同一级表头 -->
            <!-- <el-table-column v-for="(item, index) in headFilter.value.option1" :key="index +'option1'":label="item":prop="tableHeadeTryList[item]">
            </el-table-column>
            <el-table-column v-for="(item, index) in headFilter.value.option2" :key="index +'option2'":label="item":prop="tableHeadTestList[item]">
            </el-table-column> -->
            <!-- 形式二:父子表头 -->
            <el-table-column v-for="(item, index) in headFilter.value.option1" :key="index +'option1'":label="item">
                <el-table-column
                    v-for="(item, index) in headFilter.value.option2"
                    :key="index +'option2'":label="item":prop="tableHeadTestList[item]"
                >
                </el-table-column>
            </el-table-column>
        </el-table>
    </div>
</template>

<script>
import tableHeadAdjust from '@/components/tableHeadAdjust.vue';
export default {
    name: 'sysIndex',
    components: {tableHeadAdjust},
    data() {
        return {tableData: [],
            headFilter: {
                visible: false,
                value: {option1: [],
                    option2: []}
            },
            headerShowList: {option1: ['测试 1', '测试 2', '测试 3', '测试 4', '测试 5', '测试 6', '测试 7'],
                option2: ['试验 1', '试验 2', '试验 3', '试验 4', '试验 5', '试验 6', '试验 7']
            }
        };
    },
    computed: {tableHeadeTryList() {
            return {
                测试 1: 'try1',
                测试 2: 'try2',
                测试 3: 'try3',
                测试 4: 'try4',
                测试 5: 'try5',
                测试 6: 'try6',
                测试 7: 'try7'
            };
        },
        tableHeadTestList() {
            return {
                试验 1: 'test1',
                试验 2: 'test2',
                试验 3: 'test3',
                试验 4: 'test4',
                试验 5: 'test5',
                试验 6: 'test6',
                试验 7: 'test7'
            };
        }
    },
    mounted() {
        // userMark 为了辨别是哪个用户的表头,您能够依据手机号或者 id 用户的惟一标识来做
        localStorage.setItem('userMark', 'userMark1');
        // 初始化表格表头
        this.king_tableConceal(this);
        this.tableData = [
            {
                date: '2016-05-02',
                name: '王小虎',
                try1: '好的 1',
                try2: '好的 2',
                try3: '好的 3',
                try4: '好的 4',
                try5: '好的 5',
                try6: '好的 6',
                try7: '好的 7',
                test1: '没方法 1',
                test2: '没方法 2',
                test3: '没方法 3',
                test4: '没方法 4',
                test5: '没方法 5',
                test6: '没方法 6',
                test7: '没方法 7'
            },
            {
                date: '2016-05-04',
                name: '王小虎',
                try1: '好的 1',
                try2: '好的 2',
                try3: '好的 3',
                try4: '好的 4',
                try5: '好的 5',
                try6: '好的 6',
                try7: '好的 7',
                test1: '没方法 1',
                test2: '没方法 2',
                test3: '没方法 3',
                test4: '没方法 4',
                test5: '没方法 5',
                test6: '没方法 6',
                test7: '没方法 7'
            }
        ];
    },
    methods: {
        /*
        reson: 上面这些办法能够放到全局办法外面方便使用
        author:king 之浪迹天涯
        */
        /*
         * 初始化表格显示暗藏项
         */
        king_tableConceal(curThis) {let headerShowList = curThis.king_getConceal(curThis.$route.path);
            curThis.headFilter.value = headerShowList ? headerShowList : {option1: curThis.headerShowList.option1, option2: curThis.headerShowList.option2};
        },

        /**
         * 获取用户表格显示暗藏项
         * @param path
         */
        king_getConceal(path) {let USER_ID = localStorage.getItem('userMark');
            let USER_TABLEHEADADUST = localStorage.getItem('USER_TABLEHEADADUST');
            USER_TABLEHEADADUST = USER_TABLEHEADADUST ? JSON.parse(USER_TABLEHEADADUST) : {};
            if (USER_TABLEHEADADUST.hasOwnProperty(USER_ID) && USER_TABLEHEADADUST[USER_ID].hasOwnProperty(path))
                return USER_TABLEHEADADUST[USER_ID][path];
            return '';
        },
        /**
         * 存储用户表格显示暗藏项
         * @param path、theader
         */
        king_setConceal(path, conceal) {
            // userMark 为了辨别是哪个用户的表头,您能够依据手机号或者 id 用户的惟一标识来做
            let USER_ID = localStorage.getItem('userMark');
            let USER_TABLEHEADADUST = localStorage.getItem('USER_TABLEHEADADUST');
            USER_TABLEHEADADUST = USER_TABLEHEADADUST ? JSON.parse(USER_TABLEHEADADUST) : {};
            if (!USER_TABLEHEADADUST.hasOwnProperty(USER_ID)) {USER_TABLEHEADADUST[USER_ID] = {[path]: conceal
                };
            } else {USER_TABLEHEADADUST[USER_ID][path] = conceal;
            }
            localStorage.setItem('USER_TABLEHEADADUST', JSON.stringify(USER_TABLEHEADADUST));
        }
    }
};
</script>

<style></style>

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