字面上来看JSX即 JavaScript XML取首字母结合，所以JSX并不是一门新语言，仅仅是个语法糖。
加上注释是为了防止刚接触这块代码的人看到这个导入,没有地方使用,而误以为是没有用处的代码,顺手把它删除。 搞完之后我们就可以“肆意妄为”了,在代码中有用到屏幕宽高的地方我们都可以直接使用width和height变量来作为屏幕的宽高,再也不需要先导入再get才能拿到屏幕的宽高值。 此刻心情是不是有种,想要飞一样...
setSize] = useState(getSize()); useEffect(() => { const handler = () => { setSize(window.innerWidth) }; window.addEventListener('resize', handler); return () => { window.removeEventListener('resize', handler); }; }, []); return [size]; }; // jsx中使用 export default functio...
export let screenW = Dimensions.get('window').width; export let screenH = Dimensions.get('window').height; // iPhoneX const X_WIDTH = 375; const X_HEIGHT = 812; export function isIphoneX() { return ( Platform.OS === 'ios' && ((screenH === X_HEIGHT && screenW === X_WIDTH...
_calculatePosition = ()=> { const {style}=this.props; let dimensions = Dimensions.get('window'); let windowWidth = dimensions.width; let windowHeight = dimensions.height; let dropdownHeight = (style && StyleSheet.flatten(style).height) || StyleSheet.flatten(styles.dropdown).height; let bott...
width={'100%'}>{Row}</List>) }functiongetRandomColor() { const color= Math.floor((Math.random()*0xFFFFFF)).toString(16)if(color.length === 6) {return'#' +color }returngetRandomColor(); } ReactDOM.render(<Container />, window.root) ...
Dimensions.get('window').height:require('react-native-extra-dimensions-android').get('REAL_WINDOW_HEIGHT',);functionWrapperComponent(){const[isModalVisible,setModalVisible]=useState(true);return(<ModalisVisible={isModalVisible}deviceWidth={deviceWidth}deviceHeight={deviceHeight}><Viewstyle={{flex:1...
.react{width: 10px;height: 10px;display: inline-block;background: #52c41a;/* #00000040 */margin-left: 30px; margin-right: 10px; }// 参考:src\components\index.module.less 中 global:global(.trendBox .ant-card-head-wrapper) {width:100%; ...
{getSuggestions}onSelectItem={item=>{item&&setSelectedItem(item.id)}}debounce={600}suggestionsListMaxHeight={Dimensions.get('window').height*0.4}onClear={onClearPress}// onSubmit={(e) => onSubmitSearch(e.nativeEvent.text)}onOpenSuggestionsList={onOpenSuggestionsList}loading={loading}useFilter=...
('react-native'); var {Dimensions,StyleSheet,Component} = React; // 我们可以使用Dimensions 去获取窗口宽度 var fullWidth = Dimensions.get('window').width; let thirtyPercentiWidth = fullWidth * 0.3; // Your stylesheet var styles = StyleSheet.create({ .wrap{ width: thirtyPercentiWidth, } }...