我想在Aurelia中创建自定义字段集,我需要在"slot"标签中设置标签元素的样式(宽度((请参阅下面的示例用法(。如何访问这些元素?到目前为止,我所拥有的是
<template>
<require from="./ib-fieldset.css"></require>
<fieldset style.bind="style">
<legend>${title}</legend>
<slot></slot>
</fieldset>
</template>
和
import {bindable} from 'aurelia-framework';
import * as $ from 'jquery';
export class IbFieldset {
@bindable title: string;
@bindable top: number;
@bindable left: number;
@bindable labelWidth: number;
style: string;
attached() {
this.title = ` ${this.title} `;
this.style = `position: absolute; top: ${this.top}px; left: ${this.left}px;`;
}
}
我是这样使用它的:
<ib-fieldset title="Address" top="100" left="200" labelWidth="100">
<label for="firstName">First name:</label>
<input id="firstName" type="text">
<label for="lastName">Last name:</label>
<input id="lastName" type="text">
</ib-fieldset><br>
我尝试使用 jquery,但我不知道如何仅选择字段集组件中的元素(而不是可以包含其他字段集的整个页面(。
像Aurelia的大多数情况一样,不需要jQuery。
要点运行:https://gist.run/?id=aa1e8239736e0de11f73116966af9ac9
字段集.html
<template>
<fieldset style="position: absolute; top: ${top}px; left: ${left}px;">
<legend>${title}</legend>
<slot ref="slotElement"></slot>
</fieldset>
</template>
字段集.js
import {bindable} from 'aurelia-framework';
export class IbFieldset {
@bindable title: string;
@bindable top: number;
@bindable left: number;
@bindable labelWidth: number;
attached() {
this.title = ` ${this.title} `;
let labels = this.slotElement.querySelectorAll('label');
for (let label of Array.from(labels)) {
label.setAttribute('width', `${labelWidth}px`);
}
}
}
消费者.html
<require from="./fieldset"></require>
<ib-fieldset title="Address" top="100" left="200" label-width="100">
<label for="firstName">First name:</label>
<input id="firstName" type="text"/>
<label for="lastName">Last name:</label>
<input id="lastName" type="text"/>
</ib-fieldset><br>
要注入元素:
import {inject} from ‘aurelia-framework’;
@inject(Element)
export class IbFieldset {
constructor(element) {
this.element = element;
}
attached() {
let labels = this.element.querySelectorAll('label');
……
}