TIL150 Delete local storage data *appendChild() The Node.appendChild() method adds a node to the end of the list of children of a specified parent node. *parentNode The Node.parentNode read-only property returns the parent of the specified node in the DOM tree. *removeChild() The Node.removeChild() method removes a child node from the DOM and returns the removed node. https://www.w3schools.com/jsref/met_node_removechild.asp HTM.. 2020. 2. 17. 새로운 데이터 값 id 주기 JSON, array.length + 1 const toDos = [ ] => toDos.length => 0 const newId = toDos.length + 1; const toDoObj = { text: text, id: newId // if there isn't anything, it starts from 0 }; const toDoForm = document. querySelector(".js-toDoForm"), toDoInput = toDoForm. querySelector("input"), input value 를 주고 난 후, 그 자리 데이터를 지운다. const currentValue = toDoInput. value; *toDoInput. value = " "; forEach를 통해 데이터 값들을 화면에 뿌려준다. // 뿌.. 2020. 2. 16. Math.floor(Math.random() * (max - min)) + min 범위 구하기. Math.random() generates a random number between 0 and 1 (not including 1). You need to scale that value based on the range of numbers you want. Your range is how far from your min desired number to your max desired number which is max - min. If you want to include the max value in the range of numbers generated, then use max - min + 1 You then need to make sure the random number starts at the ri.. 2020. 2. 15. prev 1 2 3 4 5 6 7 ··· 50 next