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onclick in the input field type open flmngr window + select the file and add to the input field the url of the file selected

I am looking for help to customise the code when onclick in the input field type open flmngr window + selecting the file and adding to the input field the URL of the file selected
window.onFlmngrAndImgPenLoaded = function() {
var elBtn = document.getElementById("btn");
// Style button as ready to be pressed
elBtn.style.opacity = 1;
elBtn.style.cursor = "pointer";
var elLoading = document.getElementById("loading");
elLoading.parentElement.removeChild(elLoading);
// Add a listener for selecting files
elBtn.addEventListener("click", function() {
selectFiles();
});
}
function selectFiles() {
let flmngr = window.flmngr.create({
urlFileManager: 'https://fm.n1ed.com/fileManager',
urlFiles: 'https://fm.n1ed.com/files'
});
flmngr.pickFiles({
isMultiple: false,
acceptExtensions: ["png", "jpeg", "jpg", "webp", "gif"],
onFinish: function(files) {
showSelectedImage(files);
}
});
}
function showSelectedImage(files) {
let elImages = document.getElementById("images");
elImages.innerHTML = "";
var file = files[0];
let el = document.createElement("div");
el.className = "image";
elImages.appendChild(el);
let elImg = document.createElement("img");
elImg.src = file.url;
elImg.alt = "Image selected in Flmngr";
el.appendChild(elImg);
let elP = document.createElement("p");
elP.textContent = file.url;
el.appendChild(elP);
}
body {
padding: 20px;
background-color: #F4F4F4;
}
#images {
.image {
border: 1px solid #DDD;
box-shadow: 5px 5px 0 0 #DDD;
background-color: white;
padding: 10px;
display: inline-flex;
flex-direction: column;
margin: 0 25px 25px 0;
img {
max-height: 350px;
border: 1px solid #DDD;
}
p {
margin: 5px 0 0 0;
font-size: 14px;
color: #444;
}
}
}
<h1 class="h5 mb-3">Flmngr file manager: select a single image</h1>
<div id="btn" class="btn btn-primary" style="opacity:0.2;cursor:default">Select image...</div>
<div id="loading" style="font-size:12px">Loading file manager...</div>
<h2 class="h5 mt-5">Selected image</h2>
<div id="images">
No image selected yet.
</div>
<script src="https://cloud.flmngr.com/cdn/FLMNFLMN/flmngr.js"></script>
<script src="https://cloud.flmngr.com/cdn/FLMNFLMN/imgpen.js"></script>
I am looking for something like this clicking on the input field open the flmngr file manager, clicking or selecting the file, populate the URL of the file to the input field
<input type="text" name="field_name" id="field_name" value="https://fm.n1ed.com/files/book.png" onclick="BrowseServer('field_name');">
I really appreciate any help.
Thank you
Best Regards

I found a solution to click on the input
window.onFlmngrAndImgPenLoaded = function() {
var elBtn = document.getElementById("FlmngrBrowseServer");
// Style button as ready to be pressed
elBtn.style.opacity = 1;
elBtn.style.cursor = "pointer";
var elLoading = document.getElementById("loadingFlmngrBrowseServer");
elLoading.parentElement.removeChild(elLoading);
// Add a listener for selecting files
elBtn.addEventListener("click", function() {
selectFiles();
});
}
function selectFiles() {
let flmngr = window.flmngr.create({
urlFileManager: 'https://fm.n1ed.com/fileManager',
urlFiles: 'https://fm.n1ed.com/files'
});
flmngr.pickFiles({
isMultiple: false,
acceptExtensions: ["png", "jpeg", "jpg", "webp", "gif"],
onFinish: function(files) {
showSelectedImage(files);
}
});
}
function showSelectedImage(files) {
var file = files[0];
var x = file.url;
document.getElementById("FlmngrBrowseServer").value = x;
}
<input type="text" name="configuration[MODULE_PAYMENT_BTC_IMAGE]" value="images/payment_bitcoin.png" id="FlmngrBrowseServer">
<div id="loadingFlmngrBrowseServer"></div>
<input type="text" name="configuration[MODULE_PAYMENT_BTC_IMAGE]" value="images/payment_bitcoin.png" id="FlmngrBrowseServer1">
<div id="loadingFlmngrBrowseServer1"></div>
<script src="https://cloud.flmngr.com/cdn/FLMNFLMN/flmngr.js"></script>
<script src="https://cloud.flmngr.com/cdn/FLMNFLMN/imgpen.js"></script>
field and select the file then get the URL link and parse to the input field, but I need a solution for 2 or more input fields.

How do I edit or updated an array of Objects CRUD app dynamically?

I am working on a bookmark "collector" app that allows users save websites urls as a collection. I have created an array collectX in the localstorage to save each collections. However I am trying to edit and update each collections that have created on another HTML page.
How can I do that?
Here is what I have tried so far:
//get form values
// create an object of the form values
//create an empty array
//append object of the form values to the empty array
//display array object values
showCollection();
var getButton = document.getElementById('clickIt');
var collectionTitle = document.getElementById("title");
var collectionDescription = document.getElementById('describe')
getButton.addEventListener('click', function(e){
e.preventDefault()
var collections = {
title: collectionTitle.value,
description: collectionDescription.value,
collectedWebsites:[]
}
let webCollections = localStorage.getItem('collectx');
if(webCollections == null){
var collectionObj = []
alert('storage is empty')
}
else{
collectionObj = JSON.parse(webCollections);
}
collectionObj.push(collections);
localStorage.setItem("collectx", JSON.stringify(collectionObj));
showCollection()
});
function showCollection(){
let webCollections = localStorage.getItem('collectx')
if(webCollections == null){
var collectionObj = []
alert('storage is empty')
}
else{
collectionObj = JSON.parse(webCollections);
}
let html= ''
var demos = document.getElementById('demo');
collectionObj.forEach(function(item, index){
html += `<div class="collects">
Title: ${item.title} <br>
Description: ${item.description} </div>`
})
demos.innerHTML = html
}
body{
background-color: #000;
}
.collects{
width: 150px;
height: 100px;
padding: 10px 5px 10px 5px;
margin-right: 20px;
border-radius: 10px;
display: inline-block;
background-color: #fff;
}
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CollectX</title>
<link rel="stylesheet" href="/style.css">
</head>
<body>
<form id="forms">
<input id="title" type="text" placeholder="Collection name">
<br>
<br>
<input id="describe" type="text" placeholder="Description">
<button id="clickIt"> Submit </button>
</form>
<div id="demo">
</div>
<script src="/script.js"></script>
</body>
</html>
Here is the link to the JSFiddle: https://jsfiddle.net/c3jgezwr/2/
P.S: I have tried to the method used on this page: https://www.xul.fr/javascript/parameters.php

Please take a look to this example
CSS
body {
background-color: #000;
}
.collects {
min-width: 150px;
min-height: 100px;
padding: 10px 5px 10px 5px;
margin-right: 20px;
border-radius: 10px;
display: inline-block;
background-color: #fff;
overflow: hidden;
}
HTML
<form name="form">
<div>
<input name="title" placeholder="Title" />
</div>
<div>
<input name="describe" placeholder="Describe" />
</div>
<div>
<input name="links" placeholder="Add links separated by coma" />
</div>
<div>
<button type="submit">Submit</button>
</div>
</form>
JS
const form = document.forms.form;
form.addEventListener("submit", submitHandler);
function getData() {
return JSON.parse(localStorage.getItem("collectx")) ?? [];
}
function submitHandler(event) {
event.preventDefault();
const form = event.target;
const formData = new FormData(event.target);
const data = Object.fromEntries(formData);
const currentData = getData();
localStorage.setItem("collectx", JSON.stringify([...currentData, data]));
form.reset();
render();
}
function render() {
const collection = getData();
const entries = collection
.map(
({ title, describe, links }) => `
<div class="collects">
<p>Title: ${title}</p>
<p>Describe: ${describe}</p>
<p>Links: ${links && links
.split(",")
.map((link) => `${link}`)
.join("<br />")}
</p>
</div>`
)
.join("");
document.querySelector("#root").innerHTML = `
<div>
${entries}
</div>
`;
}
render();
https://jsfiddle.net/m3ws94zo/2/
The idea is to add a input to enter links separated by coma. In a real solution, you probably will need to validate the urls

Node Jquery load pages into div error

// Userlist data array for filling in info box
var userListData = [];
// DOM Ready =============================================================
$(document).ready(function() {
// Populate the user table on initial page load
populateTable();
// Username link click
$('#userList table tbody').on('click', 'td a.linkshowuser', showUserInfo);
// Add User button click
$('#btnAddUser').on('click', addUser);
// Delete User link click
$('#userList table tbody').on('click', 'td a.linkdeleteuser', deleteUser);
//Set Default page to Home.html
$('#content').load('views/home.html');
//Call navBar function
navBar();
projectBtn();
});
// Functions =============================================================
//Navbar function
function navBar() {
$('ul#navtest li a').click(function() {
var page = $(this).attr('title');
$('#content').fadeOut(400);
setTimeout(function(){$('#content').load('views/' + page + '.html')}, 400);
$('#content').fadeIn(400);
return false;
});
}
function projectBtn() {
$('a.projectbutton').click(function() {
var page = $(this).attr('title');
$('#content').fadeOut(400);
setTimeout(function(){$('#content').load('views/' + page + '.html')}, 400);
$('#content').fadeIn(400);
return false;
});
}
// Fill table with data
function populateTable() {
// Empty content string
var tableContent = '';
// jQuery AJAX call for JSON
$.getJSON( '/users/userlist', function( data ) {
// Stick our user data array into a userlist variable in the global object
userListData = data;
// For each item in our JSON, add a table row and cells to the content string
$.each(data, function(){
tableContent += '<tr>';
tableContent += '<td>' + this.username + '</td>';
tableContent += '<td>' + this.email + '</td>';
tableContent += '<td>delete</td>';
tableContent += '</tr>';
});
// Inject the whole content string into our existing HTML table
$('#userList table tbody').html(tableContent);
});
};
// Show User Info
function showUserInfo(event) {
// Prevent Link from Firing
event.preventDefault();
// Retrieve username from link rel attribute
var thisUserName = $(this).attr('rel');
// Get Index of object based on id value
var arrayPosition = userListData.map(function(arrayItem) { return arrayItem.username; }).indexOf(thisUserName);
// Get our User Object
var thisUserObject = userListData[arrayPosition];
//Populate Info Box
$('#userInfoName').text(thisUserObject.fullname);
$('#userInfoAge').text(thisUserObject.age);
$('#userInfoGender').text(thisUserObject.gender);
$('#userInfoLocation').text(thisUserObject.location);
};
// Add User
function addUser(event) {
event.preventDefault();
// Super basic validation - increase errorCount variable if any fields are blank
var errorCount = 0;
$('#addUser input').each(function(index, val) {
if($(this).val() === '') { errorCount++; }
});
// Check and make sure errorCount's still at zero
if(errorCount === 0) {
// If it is, compile all user info into one object
var newUser = {
'username': $('#addUser fieldset input#inputUserName').val(),
'email': $('#addUser fieldset input#inputUserEmail').val(),
'fullname': $('#addUser fieldset input#inputUserFullname').val(),
'age': $('#addUser fieldset input#inputUserAge').val(),
'location': $('#addUser fieldset input#inputUserLocation').val(),
'gender': $('#addUser fieldset input#inputUserGender').val()
}
// Use AJAX to post the object to our adduser service
$.ajax({
type: 'POST',
data: newUser,
url: '/users/adduser',
dataType: 'JSON'
}).done(function( response ) {
// Check for successful (blank) response
if (response.msg === '') {
// Clear the form inputs
$('#addUser fieldset input').val('');
// Update the table
populateTable();
}
else {
// If something goes wrong, alert the error message that our service returned
alert('Error: ' + response.msg);
}
});
}
else {
// If errorCount is more than 0, error out
alert('Please fill in all fields');
return false;
}
};
// Delete User
function deleteUser(event) {
event.preventDefault();
// Pop up a confirmation dialog
var confirmation = confirm('Are you sure you want to delete this user?');
// Check and make sure the user confirmed
if (confirmation === true) {
// If they did, do our delete
$.ajax({
type: 'DELETE',
url: '/users/deleteuser/' + $(this).attr('rel')
}).done(function( response ) {
// Check for a successful (blank) response
if (response.msg === '') {
}
else {
alert('Error: ' + response.msg);
}
// Update the table
populateTable();
});
}
else {
// If they said no to the confirm, do nothing
return false;
}
};
.border {
border: 4px solid black; }
.back2 {
background-color: #232323; }
.marginleft {
margin-left: 8%; }
.margin {
margin-right: 4%;
margin-left: 4%;
margin-top: 2%;
margin-bottom: 2%; }
.padding {
padding: 1%; }
.margintop {
margin-top: 1%; }
.margintop2 {
margin-top: 5%; }
.iconmargintop {
margin-top: 50px; }
.fill {
height: 100%;
width: 100%; }
p {
color: #ffffff; }
label {
color: #ffffff; }
h1 {
color: #ffffff; }
h2 {
color: #ffffff; }
th {
color: #ffffff; }
span {
color: #ffffff; }
h3 {
color: #ffffff; }
.projectseltext {
padding: 1%;
margin: 1%; }
.background {
background-color: #333333;
position: relative;
height: 100%; }
#blacktext {
color: black; }
.disablelink {
pointer-events: none;
cursor: default; }
.nav {
background-color: #b2b2b2; }
.nav a {
color: #ffffff;
font-size: 11px;
font-weight: bold;
padding: 14px 10px;
text-transform: uppercase; }
.nav li {
display: inline; }
.back1 {
background-color: #0c0c0c; }
.fit {
height: 100%;
width: 100%; }
.well {
background-color: #333333; }
.backg1 {
background-color: #333333; }
<html>
<head>
<meta name="generator"
content="HTML Tidy for HTML5 (experimental) for Windows https://github.com/w3c/tidy-html5/tree/c63cc39" />
<title></title>
</head>
<body>
<div id="project">
<div class="container-fluid row">
<a href="#" title="projectnew" class="projectbutton">
<div class="back2 col-md-11 margin border">
<img src="images/ph.jpg" class="thumbnail margin col-md-3" style="width:150px;" />
<h1 class="margin" style="margin-top:75px;">New Projects</h1>
</div>
</a>
</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta name="generator"
content="HTML Tidy for HTML5 (experimental) for Windows https://github.com/w3c/tidy-html5/tree/c63cc39" />
<link rel="stylesheet" href="stylesheets/bootstrap.min.css" />
<link rel="stylesheet" href="stylesheets/main.css" />
<script src="build/js/jquery-2.2.4.min.js"></script>
<script src="build/js/bootstrap.min.js"></script>
<script src="build/js/global.js"></script>
<title></title>
</head>
<body class="background">
<div class="container-fluid nav navbar-inverse">
<ul id="navtest" class="margintop">
<li>
Home
</li>
<li>
Projects
</li>
<li>
Contact
</li>
<li>
Resume
</li>
<li>
About
</li>
<li>
Database
</li>
</ul>
</div>
<div id='content' class="tab-content" />
</body>
</html>
<html>
<head>
<meta name="generator"
content="HTML Tidy for HTML5 (experimental) for Windows https://github.com/w3c/tidy-html5/tree/c63cc39" />
<title></title>
</head>
<body>
<div id="projectnew">
<div class="row">
<div class="container col-md-12 margintop marginleft">
Back
</div>
<div class="container-fluid margin">
<a href="" data-toggle="tab">
<div class="back2 col-md-11 margin border">
<img src="images/ph.jpg" class="thumbnail margin" style="width:150px" />
<h1 class="margin">Comming soon.</h1>
</div>
</a>
</div>
</div>
</div>
</body>
</html>
This file is temporary, i know the contents wont do anything.
The function navBar works perfectly, however when trying to apply the same method to another class and div it seems to fail.
Whenever i click on the projectbutton class it redirects to error.html. For some reason the javascript is not seeing/handling the class on click and the href being an unsupported type redirects me to error.html. However i'm not sure what is wrong with my code.

welcome;
In your HTML code, <a href="projectnew" class="projectbutton"> you have an href for your a element, if you click on this, it will go to the page "www.yourdomain.com/projectnew" since this page does not exist, you will be redirected to your error page...
To solve this problem, you should use preventDefault, in order to prevent your link element to operate things that you do not want.
$('a.projectbutton').click(function(event) {
event.preventDefault();
var page = $(this).attr('href');
$('#content').fadeOut(400);
setTimeout(function(){$('#content').load('views/' + page + '.html')}, 400);
$('#content').fadeIn(400);
return false;
});
I did not try it out, but it should work.
Read more about preventDefault: https://api.jquery.com/event.preventdefault/
OR;
Since the main problem is your href attributes in your a elements, try to remove them;
Home
Use title as your specifier in your JS;
$('a.projectbutton').click(function() {
var page = $(this).attr('title'); //changed this into title.
$('#content').fadeOut(400);
setTimeout(function(){$('#content').load('views/' + page + '.html')}, 400);
$('#content').fadeIn(400);
return false;
});

How to add data locally and add value by its id?

<!DOCTYPE HTML>
<html>
<head>
<title>HTML5 localStorage (name/value item pairs) demo</title>
<style >
td, th {
font-family: monospace;
padding: 4px;
background-color: #ccc;
}
#hoge {
border: 1px dotted blue;
padding: 6px;
background-color: #ccc;
margin-right: 50%;
}
#items_table {
border: 1px dotted blue;
padding: 6px;
margin-top: 12px;
margin-right: 50%;
}
#items_table h2 {
font-size: 18px;
margin-top: 0px;
font-family: sans-serif;
}
label {
vertical-align: top;
}
</style>
</head>
<body onload="doShowAll()">
<h1>HTML5 localStorage (name/value item pairs) demo</h1>
<form name=editor>
<div id="hoge">
<p>
<label>Value: <textarea name=data cols=41 rows=10></textarea></label>
</p>
<p>
<label>Name: <input name=name></label>
<input type=button value="getItem()" onclick="doGetItem()">
<input type=button value="setItem()" onclick="doSetItem()">
<input type=button value="removeItem()" onclick="doRemoveItem()">
</p>
</div>
<div id="items_table">
<h2>Items</h2>
<table id=pairs></table>
<p>
<label><input type=button value="clear()" onclick="doClear()"> <i>* clear() removes all items</i></label>
</p>
</div>
<script>
function doSetItem() {
var name = document.forms.editor.name.value;
var data = document.forms.editor.data.value;
var origData = localStorage.getItem(name) || 0;
localStorage.setItem(name, parseInt(origData) + parseInt(data));
doShowAll();
}
function doGetItem() {
var name = document.forms.editor.name.value;
document.forms.editor.data.value = localStorage.getItem(name);
doShowAll();
}
function doRemoveItem() {
var name = document.forms.editor.name.value;
document.forms.editor.data.value = localStorage.removeItem(name);
doShowAll();
}
function doClear() {
localStorage.clear();
doShowAll();
}
function doShowAll() {
var key = "";
var pairs = "<tr><th>Name</th><th>Value</th></tr>\n";
var i=0;
for (i=0; i<=localStorage.length-1; i++) {
key = localStorage.key(i);
pairs += "<tr><td>"+key+"</td>\n<td>"+localStorage.getItem(key)+"</td></tr>\n";
}
if (pairs == "<tr><th>Name</th><th>Value</th></tr>\n") {
pairs += "<tr><td><i>empty</i></td>\n<td><i>empty</i></td></tr>\n";
}
document.getElementById('pairs').innerHTML = pairs;
}
</script>
</form>
</body>
</html>
Hi friends,
I wants to locally save the data,now I am able to save the data locally by the code.even if I give the same name the value is getting added and saved locally.but the name should be shown in order of high value to low(example: Ram 20,Renu 18,green 2 like wise...).so how to do this?

function doSetItem() {
var name = document.forms.editor.name.value;
var data = document.forms.editor.data.value;
var origData = localStorage.getItem(name) || 0;
localStorage.setItem(name, parseInt(origData) + parseInt(data));
doShowAll();
}
To display them in descending order:
function doShowAll() {
var key = "";
var pairs = "<tr><th>Name</th><th>Value</th></tr>\n";
var userArray = [];
for (var i = 0; i <= localStorage.length - 1; i++) {
key = localStorage.key(i);
userArray.push({name:key, value:parseInt(localStorage.getItem(key))});
}
userArray.sort(function(a, b){
return b.value - a.value;
});
userArray.forEach(function(user){
pairs += "<tr><td>" + user.name + "</td>\n<td>" + user.value + "</td></tr>\n";
});
if (pairs === "<tr><th>Name</th><th>Value</th></tr>\n") {
pairs += "<tr><td><i>empty</i></td>\n<td><i>empty</i></td></tr>\n";
}
document.getElementById('pairs').innerHTML = pairs;
}

For what I can see in your code, you're just replacing the value, you need to get the existent value from the localStorage first, append to it the new one and then asign the result to the localStorage.

Uploading Multiple Files in Salesforce through Visualforce

I would like to upload multiple files in Salesforce using visualforce.
I can upload one file at a time.
But my requirement is, i want to display only one "add a file" button in visualforce page, when clicked over that button browse window should open and user selects a particular file and adds it. But after adding a file, the file path should be displayed as well as the same "add a file" button should be displayed below that which allows us to add another file. And after that we can save what we have added. It is same as adding attachments in our email.
Any help regarding this will be appreciated.

<!-- Use uploadFile function to attach multiple attachment.Update hardcoded parent id.-->
<apex:page>
<script src="//code.jquery.com/jquery-1.11.2.min.js"></script>
<script src="//code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<script type="text/javascript">
var __sfdcSessionId = '{!GETSESSIONID()}';
var filesToUpload = [];
var uploadedFile = 0;
</script>
<style>
.FilebuttonStyle{
font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;
font-size:13px`enter code here`;color:#ffffff;
background-color: #169fcc !important;
text-decoration:none;
text-align:center;
border:1px solid #1691ba !important;
line-height: 25px;!important;
border-radius:4px;
display:inline-block;
cursor:pointer;
width:85px;
}
td.fileRow {
overflow: hidden;
font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;
font-size:13px;color:#ffffff;
background-color: #8db728;
text-decoration:none;
text-align:center;
border:1px solid #6c8049;
line-height: 32px;!important;
border-radius:4px;
//padding-left:10px;
//padding-right:10px;
background-image:linear-gradient(top,#9dcc3d,#7da223);
background-image:-o-linear-gradient(top,#9dcc3d,#7da223);
background-image:-moz-linear-gradient(top,#9dcc3d,#7da223);
background-image:-webkit-linear-gradient(top,#9dcc3d,#7da223);
background-image:-ms-linear-gradient(top,#9dcc3d,#7da223);
display:inline-block;
cursor:pointer;
width:120px;
overflow: hidden;
}
td.fileRow input {
display: block !important;
width: 157px !important;
height: 57px !important;
opacity: 0 !important;
overflow: hidden !important;
}
.fileCheckBox {
width: 16px;
height: 16px;
display: inline-block;
margin: 3px 5px 3px 3px;
background-color: white;
//box-shadow: 0px 0px 1px #b0b3ae;
text-align: center;
vertical-align: top;
}
.FilebuttonGroup{
float:right;
padding-right: -70px!important;
}
</style>
<script src="/soap/ajax/32.0/connection.js" type="text/javascript"></script>
<script type="text/javascript">
function uploadFile(parentId)
{
// var input = $('.fileInput')[0];
//var input = document.getElementById("file-input");
// var filesToUpload = input.files;
$("input[type=file]").each(function(){
filesToUpload.push($(this)[0].files[0]);
});
//console.log(filesToUpload);
for(var i = 0, f; f = filesToUpload[i]; i++)
{
var reader = new FileReader();
// Keep a reference to the File in the FileReader so it can be accessed in callbacks
reader.file = f;
reader.onload = function(e)
{
var att = new sforce.SObject("Attachment");
att.Name = this.file.name;
att.ContentType = this.file.type;
att.ParentId = parentId;
var binary = "";
var bytes = new Uint8Array(e.target.result);
var length = bytes.byteLength;
for (var i = 0; i < length; i++)
{
binary += String.fromCharCode(bytes[i]);
}
att.Body = (new sforce.Base64Binary(binary)).toString();
sforce.connection.create([att],
{
onSuccess : function(result, source)
{
if (result[0].getBoolean("success"))
{
console.log("new attachment created with id " + result[0].id);
}
else
{
console.log("failed to create attachment " + result[0]);
}
},
onFailure : function(error, source)
{
console.log("an error has occurred " + error);
}
});
};
reader.readAsArrayBuffer(f);
}
}
function addRow(tableID){
var row = '<tr><td><input type="checkbox" onclick="processCheckbox()" name="chk" class="fileCheckBox"/</td><td class="fileRows"><input type="file"/> </td></tr>';
$('#'+tableID).append(row);
}
function deleteRow(tableID)
{
try
{
var table=document.getElementById(tableID);
var rowCount=table.rows.length;
for(var i=0;i<rowCount;i++)
{
var row=table.rows[i];
var chkbox=row.cells[0].childNodes[0];
if(null!=chkbox&&true==chkbox.checked)
{
table.deleteRow(i);
filesToUpload.splice(i, 1);
// console.log(filesToUpload);
rowCount--;
i--;
}
}
processCheckbox();
}
catch(e)
{
alert(e);
}
}
function processCheckbox(){
$("[id$='_remove']").hide();
var checkCount=0;
$("#dataTable input[type='checkbox']").each(function(){
if($(this).is(':checked'))
{
checkCount++;
}
});
if(checkCount >0){
$("[id$='_remove']").show();
}
}
</script>
<div class="FilebuttonGroup">
<input type="button" value="Delete Row" id="_remove" onclick="deleteRow('dataTable')" class="FilebuttonStyle" title="Delete Row"/>
<input type="button" value="Add Row" onclick="addRow('dataTable')" id="_add" class="FilebuttonStyle" title="Add Row"/>
</div>
<table id="dataTable" >
<tbody>
<tr>
<td> </td>
<td class="fileRows"> <input type="file" class="fileInput"/> </td>
<td></td>
</tr>
</tbody>
</table>
<!--Correct this attachment parentid -->
<input type="button" value="Upload" onclick="uploadFile('5009000000cjeZn')" title="Upload"/>
<div id="statusid"></div>
<script>
$(document).ready(function(){
$("[id$='_remove']").hide();
$("[id$='attachmentBlock']").find('.pbSubsection').attr({'style':'margin-right:-70px !important;'});
});
</script>
</apex:page>

You can upload multiple attachment using ajax asynchronously. You need to update the parent record id of attachment. Find the code at:
https://github.com/DebGit/Dev_2015_org1/blob/master/src/pages/FileUploaderAjax.page