我有一个如下所示的 Angular 9 mat-table
<mat-table #table [dataSource]="dataSource">
<ng-container matColumnDef="category">
<mat-header-cell *matHeaderCellDef> category </mat-header-cell>
<mat-cell *matCellDef="let item">{{ item.category.path }}</mat-cell>
</ng-container>
<ng-container matColumnDef="title">
<mat-header-cell *matHeaderCellDef> item </mat-header-cell>
<mat-cell *matCellDef="let item"><a href='{{ item.path }}'>{{ item.title }}</a></mat-cell>
</ng-container>
<ng-container matColumnDef="price">
<mat-header-cell *matHeaderCellDef> price </mat-header-cell>
<mat-cell *matCellDef="let item">{{ item.created_on }}</mat-cell>
</ng-container>
<mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
<mat-row *matRowDef="let row; columns: displayedColumns;"></mat-row>
</mat-table>
我为各个列设置了以下样式，为每列设置了固定宽度
.mat-column-title {
word-wrap: break-word !important;
white-space: unset !important;
flex: 0 0 50% !important;
width: 50% !important;
overflow-wrap: break-word;
word-wrap: break-word;
word-break: break-word;
-ms-hyphens: auto;
-moz-hyphens: auto;
-webkit-hyphens: auto;
hyphens: auto;
}
如何构造我的 CSS 以使列只占用与数据占用的宽度一样多的宽度？也就是说，我不想为每一列指定一个固定的像素或百分比。不确定这是否可能。
最佳答案
默认情况下，CSS 表格只会占用与表格中的数据一样多的空间。如果您将表格的宽度设置为 auto 而不是 100%，表格将只占用它需要的空间。
例如，这是他们对 Mat Table 的基本 Blitz ，但 table 上没有 width: 100%。
https://stackblitz.com/edit/angular-zf9gev?file=src/app/table-basic-example.css
table {
border-collapse: collapse;
}
td {
border-top: 1px solid grey;
}
th {
text-align: left;
}<div>100% width</div>
<table style="width: 100%;">
<thead>
<tr>
<th>No.</th>
<th>Name</th>
<th>Weight</th>
<th>Symbol</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>Hydrogen</td>
<td>1.0079</td>
<td>H</td>
</tr>
<tr>
<td>2</td>
<td>Helium</td>
<td>4.0026</td>
<td>He</td>
</tr>
<tr>
<td>3</td>
<td>Lithium</td>
<td>6.941</td>
<td>Li</td>
</tr>
<tr>
<td>4</td>
<td>Beryllium</td>
<td>9.0122</td>
<td>Be</td>
</tr>
<tr>
<td>5</td>
<td>Boron</td>
<td>10.811</td>
<td>B</td>
</tr>
<tr>
<td>6</td>
<td>Carbon</td>
<td>12.0107</td>
<td>C</td>
</tr>
<tr>
<td>7</td>
<td>Nitrogen</td>
<td>14.0067</td>
<td>N</td>
</tr>
<tr>
<td>8</td>
<td>Oxygen</td>
<td>15.9994</td>
<td>O</td>
</tr>
<tr>
<td>9</td>
<td>Fluorine</td>
<td>18.9984</td>
<td>F</td>
</tr>
<tr>
<td>10</td>
<td>Neon</td>
<td>20.1797</td>
<td>Ne</td>
</tr>
</tbody>
</table>
<div>Auto Width</div>
<table>
<thead>
<tr>
<th>No.</th>
<th>Name</th>
<th>Weight</th>
<th>Symbol</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>Hydrogen</td>
<td>1.0079</td>
<td>H</td>
</tr>
<tr>
<td>2</td>
<td>Helium</td>
<td>4.0026</td>
<td>He</td>
</tr>
<tr>
<td>3</td>
<td>Lithium</td>
<td>6.941</td>
<td>Li</td>
</tr>
<tr>
<td>4</td>
<td>Beryllium</td>
<td>9.0122</td>
<td>Be</td>
</tr>
<tr>
<td>5</td>
<td>Boron</td>
<td>10.811</td>
<td>B</td>
</tr>
<tr>
<td>6</td>
<td>Carbon</td>
<td>12.0107</td>
<td>C</td>
</tr>
<tr>
<td>7</td>
<td>Nitrogen</td>
<td>14.0067</td>
<td>N</td>
</tr>
<tr>
<td>8</td>
<td>Oxygen</td>
<td>15.9994</td>
<td>O</td>
</tr>
<tr>
<td>9</td>
<td>Fluorine</td>
<td>18.9984</td>
<td>F</td>
</tr>
<tr>
<td>10</td>
<td>Neon</td>
<td>20.1797</td>
<td>Ne</td>
</tr>
</tbody>
</table>如果您想要整页表的外观，但要保持列的数据大小，您有几个选择。其中两个是:让表格的最后一列占据剩余的宽度，或者添加一个额外的列来代替。
table {
border-collapse: collapse;
}
td {
border-top: 1px solid grey;
}
th {
text-align: left;
}<div>Make the last column use the rest of the width to make it full sized</div>
<table style="width: 100%">
<colgroup>
<col>
<col>
<col>
<col style="width:100%;">
</colgroup>
<thead>
<tr>
<th>No.</th>
<th>Name</th>
<th>Weight</th>
<th>Symbol</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>Hydrogen</td>
<td>1.0079</td>
<td>H</td>
</tr>
<tr>
<td>2</td>
<td>Helium</td>
<td>4.0026</td>
<td>He</td>
</tr>
<tr>
<td>3</td>
<td>Lithium</td>
<td>6.941</td>
<td>Li</td>
</tr>
<tr>
<td>4</td>
<td>Beryllium</td>
<td>9.0122</td>
<td>Be</td>
</tr>
<tr>
<td>5</td>
<td>Boron</td>
<td>10.811</td>
<td>B</td>
</tr>
<tr>
<td>6</td>
<td>Carbon</td>
<td>12.0107</td>
<td>C</td>
</tr>
<tr>
<td>7</td>
<td>Nitrogen</td>
<td>14.0067</td>
<td>N</td>
</tr>
<tr>
<td>8</td>
<td>Oxygen</td>
<td>15.9994</td>
<td>O</td>
</tr>
<tr>
<td>9</td>
<td>Fluorine</td>
<td>18.9984</td>
<td>F</td>
</tr>
<tr>
<td>10</td>
<td>Neon</td>
<td>20.1797</td>
<td>Ne</td>
</tr>
</tbody>
</table>
<div>Add an extra empty 100% width column to make it full sized</div>
<table style="width: 100%">
<colgroup>
<col>
<col>
<col>
<col>
<col style="width:100%;">
</colgroup>
<thead>
<tr>
<th>No.</th>
<th>Name</th>
<th>Weight</th>
<th>Symbol</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>Hydrogen</td>
<td>1.0079</td>
<td>H</td>
<td></td>
</tr>
<tr>
<td>2</td>
<td>Helium</td>
<td>4.0026</td>
<td>He</td>
<td></td>
</tr>
<tr>
<td>3</td>
<td>Lithium</td>
<td>6.941</td>
<td>Li</td>
<td></td>
</tr>
<tr>
<td>4</td>
<td>Beryllium</td>
<td>9.0122</td>
<td>Be</td>
<td></td>
</tr>
<tr>
<td>5</td>
<td>Boron</td>
<td>10.811</td>
<td>B</td>
<td></td>
</tr>
<tr>
<td>6</td>
<td>Carbon</td>
<td>12.0107</td>
<td>C</td>
<td></td>
</tr>
<tr>
<td>7</td>
<td>Nitrogen</td>
<td>14.0067</td>
<td>N</td>
<td></td>
</tr>
<tr>
<td>8</td>
<td>Oxygen</td>
<td>15.9994</td>
<td>O</td>
<td></td>
</tr>
<tr>
<td>9</td>
<td>Fluorine</td>
<td>18.9984</td>
<td>F</td>
<td></td>
</tr>
<tr>
<td>10</td>
<td>Neon</td>
<td>20.1797</td>
<td>Ne</td>
<td></td>
</tr>
</tbody>
</table>关于css - 如何将我的 mat-table CSS 列宽设置为只占用与数据一样多的空间？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/65893183/