javascript - 如何动态更改 aurelia 中的模板/单击以编辑表格行？

Question

通过敲除，我可以动态更改表格行的模板，这样当我单击它时，该行将变为可使用编辑模板进行编辑。 没有导航，没有路由，只是为行分配一个新模板。 我如何在 aurelia 中执行此操作？

Answer 1

下面是如何使用 if 绑定(bind)命令完成此操作:

https://gist.run/?id=2408b065ecfac30ff2b1034ea8da800d

---

代码:

应用程序.js

export class App {
  editing = null;
  
  planets = [
    { name: 'Mercury', diameter: 3032, distance: 35983610 },
    { name: 'Venus', diameter: 7521, distance: 67232360 },
    { name: 'Earth', diameter: 7926, distance: 92957100 },
    { name: 'Mars', diameter: 4222, distance: 141635300 },
    { name: 'Jupiter', diameter: 88846, distance: 483632000 },
    { name: 'Saturn', diameter: 74898, distance: 888188000 },
    { name: 'Uranus', diameter: 31763, distance: 1783950000 },
    { name: 'Neptune', diameter: 30778, distance: 2798842000 }];
  
  edit(planet) {
    this.editing = planet;
  }
}

应用.html

<template>
  <table>
    <thead>
      <tr>
        <td>Planet</td>
        <td>Diameter (mi)</td>
        <td>Distance to Sun (mi)</td>
      </tr>
    </thead>
    <tbody>
      <tr repeat.for="planet of planets" click.delegate="edit(planet)">
        <!-- read-only mode -->
        <td if.bind="editing !== planet">${planet.name}</td>
        <td if.bind="editing !== planet">${planet.diameter}</td>
        <td if.bind="editing !== planet">${planet.distance}</td>
        
        <!-- edit-mode -->
        <td if.bind="editing === planet"><input value.bind="planet.name" type="text"></td>
        <td if.bind="editing === planet"><input value.bind="planet.diameter" type="number"></td>
        <td if.bind="editing === planet"><input value.bind="planet.distance" type="number"></td>
      </tr>
    </tbody>
  </table>
</template>

CSS:

thead {
  font-weight: bold;
}

tbody > tr > td {
  cursor: pointer;
}