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todo.js
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todo.js
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// create the do
let id = Math.round(Math.random()) ;
let task = [];
removeEgg(['egg','apple','egg','egg','egg','ham']);
fisrtTwo(['egg','apple','egg','egg','egg','ham']);
function $(elem){
return document.querySelector(elem);
}
// store to localStorage
function toStorage(){
let task_name = $('input.name').value;
let taskDate = $('input.date').value;
task.push({
task_name,
taskDate,
});
// store to localstorage;
localStorage.setItem( "task",JSON.stringify(task));
fromStorage("task");
}
// fetch from localStorage and delete
function fromStorage (obj){
// return console.log(typeof(obj));
if( typeof(obj) === 'array'){
console.log("not set in localstorage")
}else{
n = localStorage.getItem(obj);
let m = JSON.parse(n);
updatePage(m);
}
}
// display on webpage
function updatePage(obj){
let tag =$('.task');
let pended = '';
task = obj === 'object' ? task = obj : task ;
const result = {};
for(let i=0; i < obj.length;i++){
const taskObject = obj[i];
const {task_name,taskDate} = taskObject;
const html =`<div>${ task_name }</div> <div>${taskDate}</div> <button onclick="${ obj.splice(i,0) }" class="btn danger">Delete</button></p>`;
pended += html;
}
// console.log(pended)
tag.innerHTML = pended;
}
// select element
function $(elm){
return document.querySelector(elm);
}
// remove from web page
function del(id,arr){
console.log(arr)
arr.splice(id,1);
console.log(arr)
}
function removeEgg(arr){
let newArr = arr.filter(val => {
return val !== "egg";
});
return console.log( newArr );
}
function fisrtTwo (arr){
let count = 0;
let m = arr.filter(val => {
if(val == "egg" && count <= 2){
count++;
return false;
}else{
return true;
}
})
// break;
// }
return console.log(m);
}