在select元素中,将value属性设置为状态变量selectedValue,并将onChange事件处理函数设置为handleChange。当用户选择不同的选项时,handleChange函数会被调用,更新selectedValue的值。 在handleChange函数中,使用event.target.value来获取用户选择的值,并通过调用setSelectedValue函数来更新selectedValue的值。 这样,每当用户选择下拉...
最近用angularjs比较多,里面有很多自己的方法,都不咋会用,这篇只是个笔记,防止自己忘记 select style="width:100%" ng-model="selectValue">...value="{{item.key}}" ng-selected="item.key==selectValue...">...
console.log(`Selected: ${selectedOption.label}`); } render() { const { selectedOption } = this.state; return ( <Select name="form-field-name" value={selectedOption} onChange={this.handleChange} options={[ { value: 'one', label: 'One' }, { value: 'two', label: 'Two' }, ]}...
<Optionvalue="jack">Jack</Option> <Optionvalue="lucy">Lucy</Option> <Optionvalue="tom">Tom</Option> </Select>, mountNode, );
{value:'chocolate',label:'Chocolate'},{value:'strawberry',label:'Strawberry'},{value:'vanilla',label:'Vanilla'},];exportdefaultfunctionApp(){const[selectedOption,setSelectedOption]=useState(null);return(<divclassName="App"><SelectdefaultValue={selectedOption}onChange={setSelectedOption}options={...
value checked selected: 该属性可作用于 select 组件下面的 option 上,React 并不建议使用这种方式表 示状态,而推荐在 select 组件上使用 value 的方式。 事件属性 以上两种属性在状态属性发生变化时,会触发onChange事件属性。 2.3 样式处理 提到了业解火的CSS Modules ...
<option value="1">What elementary school did you attend?</option> <option value="2">What was the name of your first pet?</option> <option value="3">What city were you born in?</option> </select> </div> </div> </div>
optionLabelProp render option value or option children as content of select String: 'value'/'children' 'value' defaultValue initial selected option(s) String/Array - value current selected option(s) String/Array/{key:String, label:React.Node}/Array<{key, label}> - firstActiveValue first activ...
value: Array|Object|String|Number: selected option (or array of options for multi select) Example: onChange(value){// handle new value} onSearch: Function Description: onSearch callback. Calls on every search input change. You have to process search string inside this function and filter your...
A simple select box, where the selected value "Volvo" is initialized in the constructor: functionMyForm(){const[myCar,setMyCar]=useState("Volvo");consthandleChange=(event)=>{setMyCar(event.target.value)}return(<form><selectvalue={myCar}onChange={handleChange}><optionvalue="Ford">Ford</op...