Remove last item jquery - javascript

On click of a button, result appends to another div with the total increasing on each click.
When Remove Last button is clicked it removes the appended div but does not adjust the total.
I've looked all over for a function with no luck.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Remove last</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
</head>
<body onLoad="renderTime();">
<div class="container-fluid">
<div class="row">
<div class="col-xs-4" id="printarea" >
<div id="print-container">
<div class="item"></div>
<div class="total"></div>
</div>
</div>
<div class="col-xs-8">
<ul class="final">
<li class="remove"><input type="submit" value="Remove Last" class="print-btn remove-item"></li>
<li class="remove"><input type="submit" value="Remove All" class="print-btn" data-corners="false" id="submit" onclick="refresh()"></li>
</ul>
<hr />
</div>
</div>
<div class="row">
<div class="col-xs-12">
<div class="box">
<div class="content">
<ul class="sub-menu">
<li><button class="menu item1">Item 1</button></li>
<li><button class="menu item2">Item 2</button></li>
</ul>
</div>
</div>
</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script type="text/javascript">
//add item
$('.item1').click(function(){
$('<div class="delete">Item 1 - <span class="skill"> 840</span></div><br />').appendTo('.item');
counter();
});
$('.item2').click(function(){
$('<div class="delete">Item 2 - <span class="skill"> 910</span></div><br />').appendTo('.item');
counter();
});
//remove last item
$('.remove-item').click(function(){
$(".delete:last").remove();
});
</script>
<script type="text/javascript">
function refresh() {
setTimeout(function () {
location.reload()
}, 100);
}
</script>
<script type="text/javascript">
var counter = function() {
var total = 0;
$(".skill").each(function() {
total += +$(this).text();
});
$('.total').text('Total: ' + total);
};
</script>
</body>
</html>

You need to call counter(); method after the element is removed.
//remove last item
$('.remove-item').click(function() {
$(".delete:last").remove();
counter();
});

That is because you have not called counter function after removing element. you need to call it in remove item clicked handler:
$('.remove-item').click(function(){
$(".delete:last").remove();
counter();
});
You should also parse the values while getting the text before calculating total:
var total = 0;
$(".skill").each(function() {
total += + parseInt($(this).text() , 10);
});
$('.total').text('Total: ' + total);

Related

Need the list to add new elements to the top of the list

I am kind of stuck. I have thought of the idea to use the .insertBefore() but I am not sure where to place the syntax. I also need to add checkboxes instead of the bullets that automaticly apear when using , I have no clue have to do this.
My code is as follows.
HTML
const n = [];
function changeText() {
inputText = document.getElementById('inputText').value;
n.push(inputText);
document.querySelector('#list ul').innerHTML += "<li>" + inputText
}
<html lang="en">
<head>
<title>To-Do list</title>
<mmeta charset="UTF-8">
<link rel="stylesheet" href="todoStyle.css">
</head>
<body>
<div id="form">
<h1>New Task</h1>
<div id="button">
<button onclick="changeText()">Add to list</button>
</div>
<div id="input">
<input type="text" id="inputText" name="addNewList">
</div>
</div>
<div class="list1" id="list">
<h1>My to-do list</h1>
<ul>
</ul>
</div>
<script src="todo.js"></script>
</body>
</html>
I tried inserting the .insertBefore() in a new document.getElementById. But I was not sure where to insert this line of code.
To add an element to the beginning of an array, just array.unshift(element) instead of .push
And for putting a checkbox per array item:
<li><input type="checkbox"/></li>
One way to do it is to first save the current content. Then you will concatenate the new item with the current content, in the order you want it to be presented. I modified the code to work like that
const n = [];
function changeText() {
inputText = document.getElementById('inputText').value;
// add the item in the beginning of the list
n.unshift(inputText);
// save current listing
const currentContent = document.querySelector('#list ul').innerHTML;
// append new item in the beginning the the current listing
document.querySelector('#list ul').innerHTML = "<li>" + inputText + "</li>" + currentContent;
}
<html lang="en">
<head>
<title>To-Do list</title>
<mmeta charset="UTF-8">
<link rel="stylesheet" href="todoStyle.css">
</head>
<body>
<div id="form">
<h1>New Task</h1>
<div id="button">
<button onclick="changeText()">Add to list</button>
</div>
<div id="input">
<input type="text" id="inputText" name="addNewList">
</div>
</div>
<div class="list1" id="list">
<h1>My to-do list</h1>
<ul>
</ul>
</div>
<script src="todo.js"></script>
</body>
</html>
Try using afterbegin, I used css to remove the circle of the list styles and having a checkbox with the text, now you should have some events for the input to handle.
const n = [];
function changeText() {
inputText = document.getElementById('inputText').value;
n.push(inputText)
// get reference to the nav tag
const listUl = document.querySelector("#list ul");
listUl.insertAdjacentHTML("afterbegin", `
<li>
<input type="checkbox"/>
${inputText}
</li>
`);
}
#list ul li{
list-style:none;
}
<html lang="en">
<head>
<title>To-Do list</title>
<mmeta charset="UTF-8">
<link rel="stylesheet" href="todoStyle.css">
</head>
<body>
<div id="form">
<h1>New Task</h1>
<div id="button">
<button onclick="changeText()">Add to list</button>
</div>
<div id="input">
<input type="text" id="inputText" name="addNewList">
</div>
</div>
<div class="list1" id="list">
<h1>My to-do list</h1>
<ul>
</ul>
</div>
<script src="todo.js"></script>
</body>
</html>

Function will not update variable

The variable status is set to "uncheck" and needs to be updated to "done" using the change() function.
Ultimately what needs to happen When button with id randomIdTwo is pressed, The completeTodo() function is called which causes the list item to be removed from its current div "list", appended to the div "complete-list", and the change() function updates the value of the "status" variable from "uncheck" to "done".
Everything works except the change() function.
document.getElementById('button').addEventListener('click', function addTodo() {
var value = document.getElementById('input').value;
var status = "uncheck";
var randomId = Math.random();
var randomIdTwo = Math.random();
function change() {
status = "done";
};
const item = `<li>
<div class="item">
<div class="complete">
<button id="` + randomIdTwo + `" class="${status}"></button>
</div>
<p class="text">${value}</p>
<div class="remove">
<button id="` + randomId + `" class="todo"></button>
</div>
</div>
</li>`;
const position = "beforeend";
list.insertAdjacentHTML(position, item);
document.getElementById(randomId).addEventListener('click', function removeTodo() {
var item = this.closest('li');
item.remove();
});
document.getElementById(randomIdTwo).addEventListener('click', function completeTodo() {
var item = this.closest('li');
item.remove();
document.getElementById("completelist").appendChild(item);
change();
});
});
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title></title>
<link rel="stylesheet" type="text/css" href="Resources/CSS/reset.min.css">
<link rel="stylesheet" type="text/css" href="Resources/CSS/style.css">
</head>
<body>
<div class="container">
<header>
<div id="datetime"></div>
<div id="ampm"></div>
<input type="text" id="input" placeholder="Add an item" />
<button id="button" type="button"><img src="./img/additem4.png"></button>
</header>
<div id="list">
</div>
<div id="divline"></div>
<div id="completelist">
</div>
</div>
<script src="resources/JS/app.js"></script>
</body>
</html>
Changing the status variable doesn't change the class of the element. You need to update the button's classList
document.getElementById('button').addEventListener('click', function addTodo() {
var value = document.getElementById('input').value;
var status = "uncheck";
var randomId = Math.random();
var randomIdTwo = Math.random();
function change(button) {
button.classList.add("done");
button.classList.remove("uncheck");
};
const item = `<li>
<div class="item">
<div class="complete">
<button id="` + randomIdTwo + `" class="${status}"></button>
</div>
<p class="text">${value}</p>
<div class="remove">
<button id="` + randomId + `" class="todo"></button>
</div>
</div>
</li>`;
const position = "beforeend";
list.insertAdjacentHTML(position, item);
document.getElementById(randomId).addEventListener('click', function removeTodo() {
var item = this.closest('li');
item.remove();
});
document.getElementById(randomIdTwo).addEventListener('click', function completeTodo() {
var item = this.closest('li');
item.remove();
document.getElementById("completelist").appendChild(item);
change(this);
});
});
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title></title>
<link rel="stylesheet" type="text/css" href="Resources/CSS/reset.min.css">
<link rel="stylesheet" type="text/css" href="Resources/CSS/style.css">
</head>
<body>
<div class="container">
<header>
<div id="datetime"></div>
<div id="ampm"></div>
<input type="text" id="input" placeholder="Add an item" />
<button id="button" type="button"><img src="./img/additem4.png"></button>
</header>
<div id="list">
</div>
<div id="divline"></div>
<div id="completelist">
</div>
</div>
<script src="resources/JS/app.js"></script>
</body>
</html>
You're using string interpolation to set the class initially, but string interpolation does not create a data-binding between the resultant element and the variable. So change() is being called, and status is being updated, but the value of the element you created via a string isn't seeing that change, so it's not being updated.
You would need to access the element in the DOM and change it's classList manually.

input field not resetting

I'm doing a simple to do app in vanilla JavaScript where I'm trying to reset the input field after every click but for some reason it is not re-setting after every click.
it does reset after you click on the input field, but what I want is for the input field to reset after the clicking the "add" button and not having to click on input field.
the input field is not inside a <form>
this is my function to try to reset the input field
document.getElementById("task").onclick = function() {
Reset();
}
function Reset() {
document.getElementById("task").value = null;
}
<div class="row">
<div class="col s12">
<div class="input-field inline">
<input id="task" type="text">
<label for="email" data-error="wrong" data-success="right">Add a todo</label>
</div>
<a id="add" class="btn-floating btn-large waves-effect waves-light red"><i class="material-icons">add</i></a>
</div>
</div>
this is the problem now for some reason its affecting the localstorage:
function getTodos(){
var todos = new Array();
var todos_str = localStorage.getItem('todo');
if(todos_str !== null) {
todos = JSON.parse(todos_str);
}
return todos;
}
// Please do not use inline event handlers, use this instead:
document.getElementById("add").onclick = function() {
Reset();
}
function Reset() {
document.getElementById("task").value = null;
}
function add(){
var task = document.getElementById('task').value;
var todos = getTodos();
todos.push(task);
localStorage.setItem('todo', JSON.stringify(todos));
show();
return false;
}
function remove() {
var id = this.getAttribute('id');
var todos = getTodos();
todos.splice(id, 1);
localStorage.setItem('todo', JSON.stringify(todos));
show();
return false;
}
function show() {
var todos = getTodos();
var html = '<ul>';
for(var i = 0; i < todos.length; i++) {
html += '<li>' + todos[i] + '<button class="remove" id="' + i + '"> x </button></li>';
};
html += '</ul>';
document.getElementById('todos').innerHTML = html;
var buttons = document.getElementsByClassName('remove');
for( var i = 0; i < buttons.length; i++){
buttons[i].addEventListener('click', remove);
};
}
document.getElementById('add').addEventListener('click', add);
show();
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>to do app</title>
<!--Import Google Icon Font-->
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<!--Import materialize.css-->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/css/materialize.min.css">
<!--Let browser know website is optimized for mobile-->
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
</head>
<body>
<div class="navbar-fixed">
<nav>
<div class="nav-wrapper">
Logo
<ul id="nav-mobile" class="right hide-on-med-and-down">
<li>Sass</li>
<li>Components</li>
<li>JavaScript</li>
</ul>
</div>
</nav>
</div>
<div class="row">
<div class="col s12">
<div class="input-field inline">
<input class="reset-task" id="task" type="text">
<label for="email" data-error="wrong" data-success="right">Add a todo</label>
</div>
<a id="add" class="btn-floating btn-large waves-effect waves-light red"><i class="material-icons">add</i></a>
</div>
</div>
<div id="todos"></div>
<script src="app.js"></script>
<!--Import jQuery before materialize.js-->
<script type="text/javascript" src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/js/materialize.min.js"></script>
</body>
</html>
Your example does work but you just used the wrong id.
Use the add id instead of the task id and everything should work fine.
document.getElementById("add").onclick = function() {
Reset();
}
function Reset() {
document.getElementById("task").value = null;
}
<div class="row">
<div class="col s12">
<div class="input-field inline">
<input id="task" type="text">
<label for="email" data-error="wrong" data-success="right">Add a todo</label>
</div>
<a id="add" class="btn-floating btn-large waves-effect waves-light red"><i class="material-icons">add</i></a>
</div>
</div>
Well, it's not clearly where you'd like to get the click event triggered, so I'm assuming that first option is on the body, so:
document.body.addEventListener("click", Rest);
Before your "document.getElementById("task").onclick" should help, there is just a little trick to get this working properly here:
Why is the onclick event on the body element not working?
It's the something if what you like is getting it triggered on element a click event:
document.getElementById("add").onclick = function()......

How to get result from button click to display on the same page using Javascript

I am writing a page that has the code for a function in a pre tag, a button below the raw code that will run the code. I am having trouble with displaying the result of the button on the same page. I know document.write() is probably the culprit but I'm unsure what to change it to. Thanks you for your time.
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script> <title>Stack Overflow Question</title>
</head>
<body>
<div>
<!-- Nav tabs -->
<ul class="nav nav-tabs" role="tablist">
<li role="presentation" class="active">Q3</li>
</ul>
<!-- Tab panes -->
<div class="tab-content">
<!-- Question 3 Start -->
<div role="tabpanel" class="tab-pane tab-pane active" id="q3">
<div class="row">
<div class="col-md-12">
</div>
<div class="col-md-12">
<!-- button -->
<button id="q3-button" class="btn btn-default" type="button">Question Three Solution</button>
</div>
<div class="col-md-12">
<!-- result -->
<div id="q3-result"></div>
</div>
</div>
</div>
<script>
$(document).ready(function(){
//Q 3
function start(){
var start = parseInt(prompt("How long would you like the side to be?"));
if (isNaN(start)) {
alert("That's not a number, please retry.");
var start = prompt("Please re-enter a number.");
}
var str = " " + "<br>";
for (var i=1; i<=start; i++){
for(var j=1; j<=8; j++){
if((i+j)%2==0){
document.write("#");
}
else{
document.write(" ");
}
}
document.write(str);
}
$("#q3-result").html(start);
}
$("#q3-button").on("click", function(){
start();
});
//ends document ready function
});
</script>
</div>
</body>
</html>

javascript for create tabs

I have a function in Javascript like this :
!function($) {
function add_tab(num, name){
var $newDiv = $("<div class='tab-pane' />")
.attr("id", "tab_"+name)
.html("Content " + name);
//.html("<div class='row'>");
$("#graphTabsContent").append($newDiv);
var $newLi = $("<li/>");
if(num==0){
$newLi.attr("class", "active");
}
var $newA = $("<a data-toggle='tab' />")
.attr("href", "#tab_"+name)
.html(name);
$newLi.append($newA);
$("#ul_tabs").append($newLi);
};
function update_graph_tabs(){
$.getJSON("call/json/get_role", {}, function(roles) {
$("#ul_tabs").empty();
$("#graphTabsContent").empty();
$.each(roles, function (key, role){
add_tab(key, role);
});
});
}
// Run
update_graph_tabs();
}(jQuery);
this function get the data from JSON and after it create tabs tabbable, in my HTML like this(http://getbootstrap.com/2.3.2/components.html#navs).
this is my HTML code :
<div class="row">
<div class="span3">
<div class="dropdown">
<select class="selectpicker btn-warning" id="groupe" data-style="btn-primary">
<option value="">Awaiting data...</option>
</select>
</div>
</div>
</div>
<div class="row">
<div class="span4"><div id="reportingContainer"></div></div>
<div class="span8">
<div id="dashboard">
<div id="combochart"></div>
<div id="control"></div>
</div>
</div>
</div>
<div class="tabbable" >
<ul id="ul_tabs" class="nav nav-tabs">
</ul>
<div class="tab-content" id="graphTabsContent">
</div>
</div>
Now, I want in every tab it to show me one chart that I code. For example, in my HTML O have this code that create one piechart and one combochart in my page but it is not in my tabs.
This may help you:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Twitter Bootstrap Basic Tab Based Navigation Example</title>
<meta name="description" content="Twitter Bootstrap Basic Tab Based Navigation Example">
<link href="/twitter-bootstrap/twitter-bootstrap-v2/docs/assets/css/bootstrap2.2.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row">
<div class="span6">
<ul class="nav nav-tabs">
<li class="active">
Home </li>
<li>Tutorials</li>
<li>Practice Editor </li>
<li>Gallery</li>
<li>Contact</li>
</ul>
</div>
</div>
</div>
</body>
</html>
- See more at: http://www.w3resource.com/twitter-bootstrap/nav-tabs-and-pills-tutorial.php#sthash.a9cP7aDC.dpuf
Source: W3Resource

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