How to make html table columns resizable?

问题:

I have a fairly standard bootstrap-styled <table>. I want to make columns of this table resizable, e.g. by click-and-dragging right border of <th> element. I can't use any jQuery plugins as I'm using Angular and jQuery dependency is not acceptable.

I was thinking that if I could catch the click/mousemove event on the right border of <th> element, I could implement my own resizing logic (monitor horizontal mouse movement and adjust width accordingly), but I don't know how this can be done (there is no such thing as element border-related event as far as I know).

What's the best way to make columns resizable by user? Without jQuery (and preferably - in Angular 2 context).

回答1:

The resize property does not work with table. That's why you need to put a div inside the table th and td, then resize it.

Try the below snippet

table {
  border-collapse: collapse;
  border-spacing: 0px;
}
td {
  border: 2px solid black;
  padding: 0;
  margin: 0px;
  overflow: auto;
}

div {
  resize: both;
  overflow: auto;
  width: 120px;
  height: 120px;
  margin: 0px;
  padding: 0px;
  border: 1px solid black;
  display:block;

}

td div {
  border: 0;
  width: auto;
  height: auto;
  min-height: 20px;
  min-width: 20px;
}

<table>
  <tr>
    <td><div>one</div></td>
    <td><div>two</div></td>
    <td><div>three</div></td>
  </tr>
  <tr>
    <td><div>four</div></td>
    <td><div>five</div></td>
    <td><div>six</div></td>        
  </tr>
  <tr>
    <td><div>seven</div></td>
    <td><div>eight</div></td>
    <td><div>nine</div></td>       
  </tr>   
</table>

回答2:

Don't. Use bootstrap instead. Let bootstrap decide resizing for the end users.
- Resizing columns wont work well on devices. - You might end up being forced to remember column width in server or browser which could end up as a lot of work. Will it end there? Should columns be reordered? Should they be deleteable? It better to make some design choice rather than to shovel everything back at the end user.