el-table根据容器大小自适应滚动条-修改滚动条样式

需求：父容器里有多个容器为上下级，之后浏览器在缩放的时候，上面容器高度改变了，所以el-table被挤压，如果el-table设置的是固定的高度，那么挤压后内容超出父容器，本文章就是解决这个问题

不自适应错误用法：浏览器伸缩挤压后元素超出了

 1.在el-table的父容器上添加class

table_height_big：用于控制浏览器屏幕在大于多少时的样式

table_height_small'：浏览器宽高小于多少的样式

tableClass ：变量用于类名切换，默认在data中为true

关键代码：:class="tableClass ? 'table_height_big' : 'table_height_small'"

  <div class="container_main" :class="tableClass ? 'table_height_big' : 'table_height_small'">
                <el-table :data="tableData" style="width: 100%">
                    <el-table-column type="index" label="序号" align="center"> </el-table-column>
                    <el-table-column prop="name" label="操作内容" align="center"> </el-table-column>
                    <el-table-column prop="address" label="设备类型" align="center"> </el-table-column>
                </el-table>
                <div class="table-page-right">
                    <el-pagination
                        @size-change="handleSizeChange"
                        @current-change="handleCurrentChange"
                        :current-page="currentPage4"
                        :page-sizes="[100, 200, 300, 400]"
                        :page-size="100"
                        layout="total, sizes, prev, pager, next, jumper"
                        :total="400"
                    >
                    </el-pagination>
                </div>
            </div>

 2.类名样式修改

这个40px，是浏览器在大于多少的时候，最上面元素的值

124就是浏览器小于1350的时候，顶部元素高度值，可以根据自己的元素高度来调整

 

    .table_height_big {
        height: calc(100% - 62px);
    }
    .table_height_small {
        height: calc(100% - 124px);
    }
::v-deep .el-table {
  height: 88%;
  .el-table__body-wrapper {
    height: calc(100% - 48px) !important; // 表格高度减去表头的高度
    overflow-y: auto;
  }
}

3.在mounted中添加window.addEventListener用于监听浏览器的宽高

window.innerWidth：当前浏览器的宽度为多少，我这边写的是如果是小于1350的话就修改类名，这个值需要你自己测试下宽度为多少才会换行，换行的时候修改类名就行

   mounted() {
        this.internetCardQuery();
        window.addEventListener('resize', this.internetCardQuery);
    },
    methods: {
        internetCardQuery() {
            if (window.innerWidth < 1350) {
                this.tableClass = false;
            } else {
                this.tableClass = true;
            }
        }
    },

4.销毁时取消监听

   beforeDestroy() {
        // 取消监听
        window.removeEventListener('resize', this.internetCardQuery);
    }

5.完整代码

<template>
    <div class="content-box">
        <div class="container">
            <div class="container_header">
                <el-form :inline="true" label-width="100px" :model="formInline">
                    <el-form-item label="选择时间：">
                        <el-date-picker
                            v-model="formInline.time"
                            type="datetimerange"
                            :picker-options="pickerOptions"
                            range-separator="至"
                            start-placeholder="开始日期"
                            end-placeholder="结束日期"
                            align="right"
                        >
                        </el-date-picker>
                    </el-form-item>
                    <el-form-item label="设备类型：">
                        <el-select v-model="formInline.type" placeholder="请选择">
                            <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value"> </el-option>
                        </el-select>
                    </el-form-item>
                    <el-form-item label-width="30px" label=" ">
                        <el-button type="primary">查询</el-button>
                        <el-button type="primary" plain>重置</el-button>
                    </el-form-item>
                </el-form>
            </div>
            <div class="container_main" :class="tableClass ? 'table_height_big' : 'table_height_small'">
                <el-table :data="tableData" style="width: 100%">
                    <el-table-column type="index" label="序号" align="center"> </el-table-column>
                    <el-table-column prop="name" label="操作内容" align="center"> </el-table-column>
                    <el-table-column prop="address" label="设备类型" align="center"> </el-table-column>
                    <el-table-column prop="name" label="描述" align="center"> </el-table-column>
                    <el-table-column prop="name" label="操作类型" align="center"> </el-table-column>
                    <el-table-column prop="name" label="操作人" align="center"> </el-table-column>
                </el-table>
                <div class="table-page-right">
                    <el-pagination
                        @size-change="handleSizeChange"
                        @current-change="handleCurrentChange"
                        :current-page="currentPage4"
                        :page-sizes="[100, 200, 300, 400]"
                        :page-size="100"
                        layout="total, sizes, prev, pager, next, jumper"
                        :total="400"
                    >
                    </el-pagination>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
export default {
    data() {
        return {
            pickerOptions: {
                shortcuts: [
                    {
                        text: '最近一周',
                        onClick(picker) {
                            const end = new Date();
                            const start = new Date();
                            start.setTime(start.getTime() - 3600 * 1000 * 24 * 7);
                            picker.$emit('pick', [start, end]);
                        }
                    },
                    {
                        text: '最近一个月',
                        onClick(picker) {
                            const end = new Date();
                            const start = new Date();
                            start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
                            picker.$emit('pick', [start, end]);
                        }
                    },
                    {
                        text: '最近三个月',
                        onClick(picker) {
                            const end = new Date();
                            const start = new Date();
                            start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
                            picker.$emit('pick', [start, end]);
                        }
                    }
                ]
            },
            formInline: {
                time: '',
                type: ''
            },
            options: [
                {
                    value: '选项1',
                    label: '黄金糕'
                },
                {
                    value: '选项2',
                    label: '双皮奶'
                }
            ],
            tableData: [
                {
                    date: '2016-05-02',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1518 弄'
                },
                {
                    date: '2016-05-04',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1517 弄'
                },
                {
                    date: '2016-05-01',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1519 弄'
                },
                {
                    date: '2016-05-03',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1516 弄'
                },
                {
                    date: '2016-05-04',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1517 弄'
                },
                {
                    date: '2016-05-01',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1519 弄'
                },
                {
                    date: '2016-05-03',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1516 弄'
                },
                {
                    date: '2016-05-01',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1519 弄'
                },
                {
                    date: '2016-05-03',
                    name: '王小虎',
                    address: '上海市普陀区金沙江路 1516 弄'
                }
            ],
            currentPage4: 5,
            tableClass: true
        };
    },
    mounted() {
        this.internetCardQuery();
        window.addEventListener('resize', this.internetCardQuery);
    },
    created() {},
    methods: {

        handleSizeChange(val) {
            console.log(`每页 ${val} 条`);
        },
        handleCurrentChange(val) {
            console.log(`当前页: ${val}`);
        },
        internetCardQuery() {
            if (window.innerWidth < 1350) {
                this.tableClass = false;
            } else {
                this.tableClass = true;
            }
        }
    },
    beforeDestroy() {
        // 取消监听
        window.removeEventListener('resize', this.internetCardQuery);
    }
};
</script>

<style lang="scss" scoped>
.container {
    height: 85vh;
    width: 100%;
    background-color: #fff;
    padding: 20px;
    box-sizing: border-box;
    .container_header {
        width: 100%;
    }
    .table-page-right {
        text-align: right;
        margin-top: 15px;
    }
    .table_height_big {
        height: calc(100% - 62px);
    }
    .table_height_small {
        height: calc(100% - 124px);
    }
}
/* 设置滚动条宽度和高度 */
::v-deep .el-table__body-wrapper::-webkit-scrollbar {
    width: 10px; /* 横向滚动条 */
    height: 10px; /* 纵向滚动条 必写 */
}
/* 设置滚动条样式 */
::v-deep .el-table__body-wrapper::-webkit-scrollbar-thumb {
    background-color: #dde;
    border-radius: 3px;
}
::v-deep .el-table {
  height: 88%;
  .el-table__body-wrapper {
    height: calc(100% - 48px) !important; // 表格高度减去表头的高度
    overflow-y: auto;
  }
}
</style>

6.效果

 文章到此结束，希望对你有所帮助~~