Checkbox多选框
多选框。
何时使用
- 在一组可选项中进行多项选择时;
- 单独使用可以表示两种状态之间的切换,和
switch
类似。区别在于切换switch
会直接触发状态改变,而checkbox
一般用于状态标记,需要和提交操作配合。
单独引入此组件
想要了解更多关于单独引入组件的内容,可以在快速上手页面进行查看。
import { NzCheckboxModule } from 'ng-zorro-antd/checkbox';
代码演示
简单的 checkbox。
import { Component } from '@angular/core';
@Component({
selector: 'nz-demo-checkbox-basic',
template: `
<label nz-checkbox [(ngModel)]="checked">Checkbox</label>
`
})
export class NzDemoCheckboxBasicComponent {
checked = true;
}
联动 checkbox。
import { Component } from '@angular/core';
@Component({
selector: 'nz-demo-checkbox-controller',
template: `
<p style="margin-bottom: 20px;">
<label nz-checkbox [(ngModel)]="isCheckedButton" [nzDisabled]="isDisabledButton">
{{ isCheckedButton ? 'Checked' : 'Unchecked' }} - {{ isDisabledButton ? 'Disabled' : 'Enabled' }}
</label>
</p>
<p>
<button nz-button [nzType]="'primary'" (click)="checkButton()" [nzSize]="'small'">
{{ !isCheckedButton ? 'Checked' : 'Unchecked' }}
</button>
<button nz-button [nzType]="'primary'" (click)="disableButton()" [nzSize]="'small'">
{{ isDisabledButton ? 'Enabled' : 'Disabled' }}
</button>
</p>
`,
styles: [
`
button {
margin-right: 8px;
}
`
]
})
export class NzDemoCheckboxControllerComponent {
isCheckedButton = true;
isDisabledButton = false;
checkButton(): void {
this.isCheckedButton = !this.isCheckedButton;
}
disableButton(): void {
this.isDisabledButton = !this.isDisabledButton;
}
}
在实现全选效果时,你可能会用到 nzIndeterminate
属性。
import { Component } from '@angular/core';
@Component({
selector: 'nz-demo-checkbox-check-all',
template: `
<div style="border-bottom: 1px solid rgb(233, 233, 233);">
<label
nz-checkbox
[(ngModel)]="allChecked"
(ngModelChange)="updateAllChecked()"
[nzIndeterminate]="indeterminate"
>
Check all
</label>
</div>
<br />
<nz-checkbox-group [(ngModel)]="checkOptionsOne" (ngModelChange)="updateSingleChecked()"></nz-checkbox-group>
`
})
export class NzDemoCheckboxCheckAllComponent {
allChecked = false;
indeterminate = true;
checkOptionsOne = [
{ label: 'Apple', value: 'Apple', checked: true },
{ label: 'Pear', value: 'Pear', checked: false },
{ label: 'Orange', value: 'Orange', checked: false }
];
updateAllChecked(): void {
this.indeterminate = false;
if (this.allChecked) {
this.checkOptionsOne = this.checkOptionsOne.map(item => {
return {
...item,
checked: true
};
});
} else {
this.checkOptionsOne = this.checkOptionsOne.map(item => {
return {
...item,
checked: false
};
});
}
}
updateSingleChecked(): void {
if (this.checkOptionsOne.every(item => item.checked === false)) {
this.allChecked = false;
this.indeterminate = false;
} else if (this.checkOptionsOne.every(item => item.checked === true)) {
this.allChecked = true;
this.indeterminate = false;
} else {
this.indeterminate = true;
}
}
}
checkbox 不可用。
import { Component } from '@angular/core';
@Component({
selector: 'nz-demo-checkbox-disabled',
template: `
<label nz-checkbox nzDisabled [ngModel]="false"></label>
<br />
<label nz-checkbox nzDisabled [ngModel]="true"></label>
`
})
export class NzDemoCheckboxDisabledComponent {}
方便的从数组生成 Checkbox 组。
import { Component } from '@angular/core';
@Component({
selector: 'nz-demo-checkbox-group',
template: `
<nz-checkbox-group [(ngModel)]="checkOptionsOne" (ngModelChange)="log(checkOptionsOne)"></nz-checkbox-group>
<br />
<br />
<nz-checkbox-group [(ngModel)]="checkOptionsTwo" (ngModelChange)="log(checkOptionsTwo)"></nz-checkbox-group>
<br />
<br />
<nz-checkbox-group [(ngModel)]="checkOptionsThree" (ngModelChange)="log(checkOptionsThree)"></nz-checkbox-group>
`
})
export class NzDemoCheckboxGroupComponent {
checkOptionsOne = [
{ label: 'Apple', value: 'Apple', checked: true },
{ label: 'Pear', value: 'Pear' },
{ label: 'Orange', value: 'Orange' }
];
checkOptionsTwo = [
{ label: 'Apple', value: 'Apple' },
{ label: 'Pear', value: 'Pear', checked: true },
{ label: 'Orange', value: 'Orange' }
];
checkOptionsThree = [
{ label: 'Apple', value: 'Apple', disabled: true, checked: true },
{ label: 'Pear', value: 'Pear', disabled: true },
{ label: 'Orange', value: 'Orange' }
];
log(value: object[]): void {
console.log(value);
}
}
nz-checkbox-wrapper
内嵌 nz-checkbox
并与 Grid 组件一起使用,可以实现灵活的布局。
import { Component } from '@angular/core';
@Component({
selector: 'nz-demo-checkbox-layout',
template: `
<nz-checkbox-wrapper style="width: 100%;" (nzOnChange)="log($event)">
<div nz-row>
<div nz-col nzSpan="8"><label nz-checkbox nzValue="A" [ngModel]="true">A</label></div>
<div nz-col nzSpan="8"><label nz-checkbox nzValue="B">B</label></div>
<div nz-col nzSpan="8"><label nz-checkbox nzValue="C">C</label></div>
<div nz-col nzSpan="8"><label nz-checkbox nzValue="D">D</label></div>
<div nz-col nzSpan="8"><label nz-checkbox nzValue="E">E</label></div>
</div>
</nz-checkbox-wrapper>
`
})
export class NzDemoCheckboxLayoutComponent {
log(value: string[]): void {
console.log(value);
}
}
API
[nz-checkbox]directive
参数 | 说明 | 类型 | 默认值 |
---|---|---|---|
[nzAutoFocus] | 自动获取焦点 | boolean | false |
[nzDisabled] | 设定 disable 状态 | boolean | false |
[ngModel] | 指定当前是否选中,可双向绑定 | boolean | false |
[nzIndeterminate] | 设置 indeterminate 状态,只负责样式控制 | boolean | false |
[nzValue] | 仅与 nz-checkbox-wrapper 的选中回调配合使用 | string | - |
(ngModelChange) | 选中变化时回调 | EventEmitter<boolean> | - |
nz-checkbox-groupcomponent
参数 | 说明 | 类型 | 默认值 |
---|---|---|---|
[ngModel] | 指定可选项,可双向绑定 | Array<{ label: string; value: string; checked?: boolean; }> | [] |
[nzDisabled] | 设定全部 checkbox disable 状态 | boolean | false |
(ngModelChange) | 选中数据变化时的回调 | EventEmitter<Array<{ label: string; value: string; checked?: boolean; }>> | - |
nz-checkbox-wrappercomponent
参数 | 说明 | 类型 | 默认值 |
---|---|---|---|
(nzOnChange) | 选中数据变化时的回调 | EventEmitter<string[]> | - |
方法
[nz-checkbox]directive
通过ViewChild或其他方式获得 nz-checkbox
实例
名称 | 描述 |
---|---|
focus() | 获取焦点 |
blur() | 移除焦点 |
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