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목록2022/03/20 (2)
Bleeding edge
자바스크립트의 map과 filter 사용법
map( ) :string let arr = ['월', '화', '수', '목', '금' ] let map = arr.map( item =>item + '요일' ); map( ) : number let arr = [1, 2, 3, 4, 5] let map = arr.map(item => item* 2); map( ) : object let arr = [ {color : 'red' , text : 'a' }, {color : 'green' , text : 'a' }, {color : 'blue' , text : 'a' } ] let arrColor = arr.map((item) => item.color); filter( ) : Array arr.filter((item) => item.length >6); ..
Javascript
2022. 3. 20. 23:50