[英]Dynamically expand/collapse on click of header
我有一組需要在 UI 中顯示的項目,例如標題和其下的項目列表。
有一個父組件,我將這些數據傳遞給如下所示的文件。
基於此顯示父子布局。
現在我需要根據標題的點擊展開/折疊。
有一個類“打開”和“關閉”可以附加到 div。 基於它,它會崩潰/擴展。
關鍵是如何明智地做到這一點
有人可以幫忙嗎
import React from "react";
import Child from "./Child";
import Parent from "./Parent";
export default class Helper extends React.Component{
constructor(props: any) {
super(props);
this.state = {
parent:{},
children:{},
};
}
componentDidMount() {
this.setParentValue();
this.setChildValue();
}
render() {
const { parent, children } = this.state;
const { name } = this.props;
return (
<>
<div className="an-panel expand-panel expand-close">
<div className="an-panel-header">
<div className="title-holder">
<span className="toggle-icon far fa-plus-square" />
<span className="toggle-icon far fa-minus-square" />
<h5>{name}</h5>
</div>
<div className="action-holder">
<div className="status-holder">
<Parent
parent = {parent}
onSelect={this.handleParentClick}
/>
</div>
</div>
</div>
{children.map(({ id, name },id) => (
<div className="an-panel-body" key={id}>
<ul className="applications-list-holder">
<li>
<div className="name">{name}</div>
<div className="status">
<Child
children={children}
onSelect={this.setChildSwitchValue}
/>
</div>
</li>
</ul>
</div>
))}
</div>
</>
);
}
}
好的,讓我向您解釋一下,這是您的代碼
import React from "react";
import Child from "./Child";
import Parent from "./Parent";
export default class Helper extends React.Component{
constructor(props: any) {
super(props);
this.state = {
parent:{},
children:{},
navBarStatus: false,
};
}
componentDidMount() {
this.setParentValue();
this.setChildValue();
}
changeNavBar = (e, status)=>{
this.setState({navBarStatus: !status});
}
render() {
const { parent, children } = this.state;
const { name } = this.props;
return (
<>
<div className={`an-panel expand-panel ${this.state.navBarStatus ? "expand-open" : "expand-close"}`}>
<div className="an-panel-header" onClick={(e)=>this.changeNavBar(e, this.state.navBarStatus)}>
<div className="title-holder">
<span className="toggle-icon far fa-plus-square" />
<span className="toggle-icon far fa-minus-square" />
<h5>{name}</h5>
</div>
<div className="action-holder">
<div className="status-holder">
<Parent
parent = {parent}
onSelect={this.handleParentClick}
/>
</div>
</div>
</div>
{children.map(({ id, name },id) => (
<div className="an-panel-body" key={id}>
<ul className="applications-list-holder">
<li>
<div className="name">{name}</div>
<div className="status">
<ChildSetting
children={children}
onSelect={this.setChildSwitchValue}
/>
</div>
</li>
</ul>
</div>
))}
</div>
</>
);
}
}
您可以看到我在狀態 navBarStatus 中獲取了一個新屬性。 基於 navBarStatus 值,我正在更改 CSS 類,它將展開/關閉您附加的 div
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