(average_letter_size * selected_value.length) + other_elements_sizes 当selected_value发生变化时,它的length--- 也会发生变化,因此 div 的宽度会随着新的总数而更新。 示例:如果现在选择的值是Lorem Ipsum dolor sit amet,那么现在的长度是26。通过应用公式,我们得到更大的宽度:(8px * 26 letters) + 100...
React-select does not show the selected value in the field, For any one who is facing problems with React-Select getting populated or React-select doesn't get selected value; try to give it a dynamic key attribute who changes every time your data changes (either options array or selected o...
const {name, value} = e.target; setSelect(prevState => ({ ...prevState, [name]: value })); }; const [data, setData] = useState([]); ... /* get data */ ... const categories = data.map((item) => ({ value: item.id, label: item.Name })); return ( <div className="ap...
options={this.props.values} // getOptionValue={(option) => option.value} // getOptionLabel={(option) => option.label} /> </div> ) } } 以下是我创建下拉菜单的方法: <DropdownMenu defaultValue="Currency" values={[{ label: "EUR", value: "EUR" }, { label: "GBP", value: "GBP" ...
{ value:'strawberry', label: 'Strawberry'}, { value:'vanilla', label: 'Vanilla'}, ]; exportdefaultclass Demo extends React.Component { state={ selectedOption:null, }; handleChange= selectedOption =>{this.setState({ selectedOption });//Option selected: { value: "chocolate", label: "Cho...
value={selectedOptions} onChange={handleSelectChange} isMulti /> ); }; export default App; 在这个示例中,options数组定义了第一级的选项数据,cascadingOptions对象定义了每个选项值对应的下一级选项数据。通过getCascadingOptions函数根据当前选择的值动态生成下一级的选项列表。最后,将选项数据和状态变量s...
每个选项都有一个value和label属性,分别表示选项的值和显示的文本。 最后,将MyComponent组件渲染到DOM中: 代码语言:txt 复制 ReactDOM.render(<MyComponent />, document.getElementById('root')); 通过上述步骤,你就可以使用React-Select组件来创建一个自定义选择框,并通过API来处理选择的选项。 React-Select的...
props }) => ( <div ref={innerRef} className={cx( css(getStyles('option', props)), { 'option': true, 'option--is-disabled': isDisabled, 'option--is-focused': isFocused, 'option--is-selected': isSelected, } )} > {children} </div> ) ...
{this.state.value} > {fontSizeTag.map(type => <SelectOptions key={type.label} active={this.props.editorState.getCurrentInlineStyle().has(type.style)} label={type.label} onToggle={this.props.onToggle} style={type.style} onSelectedHandler={this.onSelectedHandler} /> )} </select> ); ...
This generic comes in handy for correctly typing callbacks like filterOption, formatOptionLabel, getOptionLabel, getOptionValue, isOptionDisabled, isOptionSelected, onChange, etc. IsMulti extends boolean = false This type is false for single-selects and is true for multi-selects. It defaults to...