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Purpose: Adjust the width of the table according to the length of the table content
The el-tale component only provides a width attribute in the table header to control the width of the table. If it is hard-coded, there may be overflow line breaks for too long content, and excessive space occupation for too short content. There are many, so I wrote a js file to return the corresponding width according to the length of the characters.
1. js code
// 自适应表格列宽 str为prop tableData为表格数据数组 flexWidth为自定义宽度用来适应自己的表格
export function flexColumnWidth(str, tableData,flexWidth, flag = 'max') {
// str为该列的字段名(传字符串);tableData为该表格的数据源(传变量);
// flag为可选值，可不传该参数,传参时可选'max'或'equal',默认为'max'
// flag为'max'则设置列宽适配该列中最长的内容,flag为'equal'则设置列宽适配该列中第一行内容的长度。
str = str + ''
let columnContent = ''
if (!tableData || !tableData.length || tableData.length === 0 || tableData === undefined) {
return
}
if (!str || !str.length || str.length === 0 || str === undefined) {
return
}
if (flag === 'equal') {
// 获取该列中第一个不为空的数据(内容)
for (let i = 0; i < tableData.length; i++) {
if (tableData[i][str].length > 0) {
// console.log('该列数据[0]:', tableData[0][str])
columnContent = tableData[i][str]
break
}
}
} else {
// 获取该列中最长的数据(内容)
let index = 0
for (let i = 0; i < tableData.length; i++) {
if (tableData[i][str] === null) {
tableData[i][str]=''
}
const now_temp = tableData[i][str] + ''
const max_temp = tableData[index][str] + ''
if (now_temp.length > max_temp.length) {
index = i
}
}
columnContent = tableData[index][str]
}
// console.log('该列数据[i]:', columnContent)
// 以下分配的单位长度可根据实际需求进行调整
for (const char of columnContent) {
if ((char >= 'A' && char <= 'Z') || (char >= 'a' && char <= 'z')) {
// 如果是英文字符，为字符分配8个单位宽度
flexWidth += 8
} else if (char >= '\u4e00' && char <= '\u9fa5') {
// 如果是中文字符，为字符分配15个单位宽度
flexWidth += 15
} else {
// 其他种类字符，为字符分配8个单位宽度
flexWidth += 8
}
}
if (flexWidth < 80) {
// 设置最小宽度
flexWidth = 80
}
// if (flexWidth > 250) {
// // 设置最大宽度
// flexWidth = 250
// }
return flexWidth + 'px'
}
Two, use
The code is as follows (example):
import {
flexColumnWidth } from "@/utils/common";
...
methods: {
flexColumnWidth(a, b){
return flexColumnWidth(a, b,this.windowWidth/20)
//此处的this.windowWidth一般为屏幕宽度，从而达到自适应效果
},
}
...
<el-table-column
label="行政区划"
align="left"
key="gridName"
prop="gridName"
v-if="columns[0].visible"
:width="flexColumnWidth('gridName',patrolList)"
/>