Develop Reference

How to add alt and title attributes along with image in quill editor

var range = this.quill.getSelection();
var value = prompt('please copy paste the image url here.');
if(value){
this.quill.insertEmbed(range.index, 'image', value, Quill.sources.USER);
}
I solved the problem of adding images by linking in the quill editor with the api code above. But I couldn't find how to add alt and title properties with the help of api. I can edit it later with the following javascript code, but I need to edit it at the image insertion stage.
if (e.target.tagName=='IMG') {
console.log(e.target.tagName)
var el = e.target;
el.setAttribute("title", "asdasdasd");
}
})
Also, when I add a or tag to the editor, it is surrounded by a p tag and cannot be edited. It puts everything in the p tag and doesn't allow tags like br. How can I solve these problems?
Sorry for the bad english.

There seems to be no easy and elegant way to do it. The API does not allow it (or I have not seen it) and the source code does not seem to be documented.
I propose this code while waiting for a better solution.
It is based on a solution to observe dynamically created elements. I have added the caption of the title and alt attribute.
To get the code to work, you will need to explain the following to your users:
They must write the title and alt in this format wherever they want to insert the image:
%title% A title %alt% An alternative text
Then, they must select that same:
%title% A title %alt% An alternative text
With that text selected they must click the image button and open the image.
Notice, at the moment, you cannot escape "%alt%", so you cannot use the "%alt%" expression within the value of an attribute.
Example:
%title% The title is before %alt% %alt% the %alt% attribute
This causes an unwanted alt attribute.
Paste this code after creating an editor.
BTW, it is only valid for the first editor that exists.
var FER_alt;
var FER_title;
function FER_callback(records) {
records.forEach(function (record) {
var list = record.addedNodes;
var i = list.length - 1;
for ( ; i > -1; i-- ) {
if (list[i].nodeName === 'IMG') {
if(FER_title.length > 0){
list[i].setAttribute('title',FER_title)
}
if(FER_title.length > 0){
list[i].setAttribute('alt',FER_alt)
}
}
}
});
}
var FER_observer = new MutationObserver(FER_callback);
var FER_targetNode = document.querySelector('.ql-editor')
FER_observer.observe(FER_targetNode, {
childList: true,
subtree: true
});
function FER_getTitleAlt(){
var selection = quill.getSelection();
var texto =quill.getText(selection.index,selection.length);
var titleE = texto.search("%alt%")
FER_title = texto.substr(7,titleE-7);
var titleI = titleE + 5
FER_alt = texto.substring(titleI)
}
var FER_imageboton = document.querySelector(".ql-image")
FER_imageboton.addEventListener("click",FER_getTitleAlt)

Instead of insertEmbed you can use getContents and setContents.
let delta = {
ops: [
{
attributes: {
alt: yourAltValue
},
insert: {
image: yourSrcValue
}
}]
};
let existingDelta = this.quill.getContents();
let combinedDelta = existingDelta.concat(delta);
this.quill.setContents(combinedDelta);

Extends Image blot and override the create method
const Image = Quill.import('formats/image');
class ImageBlot extends Image {
static create(value) {
const node = super.create(value);
if (typeof value === 'string') {
node.setAttribute('src', this.sanitize(value));
node.setAttribute('alt', this.sanitize(value).split('/').reverse()[0]);
}
return node;
}
}
Quill.register(ImageBlot);
In this example, we set alt attribute with image's basename

How to make an image play sound onclick using JavaScript?

So I want to create my 1st project using JS HTLM and CSS, which will be like a drum website ...
when I click on an image it should make sound . So, All I know is making a button make sound by clicking on it not an actual image. If you have any idea what should I put in this YYY place ?
here's my JS file code :
PS : soundi is this image's class
var soundi = document.querySelectorAll(".soundi").length;
for (var i = 0; i < soundi ; i++) {
document.querySelectorAll(".soundi")[i].addEventListener("click", function () {
var clickDe = this.YYYY;
switch (clickDe) {
case "YYYY" :
var tom1 = new Audio('sounds/tom-1.mp3');
tom1.play();
break;
}
})
}

You could add an Id to each image and then register the event listeners like so:
function imageClicked(event) {
const imgId = event.target.id; // imgId is the name of the instrument => the name of the sound file without the extension
const soundFile = new Audio(`sounds/${imgId}.mp3`); // this way, you don't have to use a switch statement which can get very long and chaotic
soundFile.play();
}
document
.querySelectorAll(".soundi") // querySelectorAll returns all the images so no need to put it in a for loop
.forEach((img) => img.addEventListener("click", imageClicked));
You will obviously have to choose the image ids properly so that they match up with the file names.

Javascript image upload and display

My basic task is select image and display it,without saving it in database.
For this
1.I have made a select tag in html,through which I can upload the image.
2.I have made a blank image tag in which at there is no image source,alternate is upload image.
3.select tag has onchange javascript event handler which calls javascript function changeimage.
<script>
function changeimage()
{
document.form_name.imagetag.src=document.form_name.filetag.value;
}
</script>
In above Code
form_name : Is the name of my form
<form name = "form_name">
imagetag : Is the name of my Img tag
<Img src=" " name = "imagetag">
filetag : Is the name of my
<input type="file" name = "filetag" onchange="changeimage()">
I have save file using php extension.And when I try to print the value of filetag it shows "C:\fakepath\image.png",display this address for all image.
I have save my php file in www location.
I am using window 7,wamp server and chrome latest version.

You may want to checkout this solution (where my code derives from). It involves a little bit of jQuery but if you truly must write it out in pure JS, here you go.
Note: I modified your tags to conform to the JS below. Also try to stay away from writing any inline scripts. Always good to keep your HTML and JS loosely coupled.
var fileTag = document.getElementById("filetag"),
preview = document.getElementById("preview");
fileTag.addEventListener("change", function() {
changeImage(this);
});
function changeImage(input) {
var reader;
if (input.files && input.files[0]) {
reader = new FileReader();
reader.onload = function(e) {
preview.setAttribute('src', e.target.result);
}
reader.readAsDataURL(input.files[0]);
}
}
<input type="file" id="filetag">
<img src="" id="preview">

You can also use the Image() constructor. It creates a new HTML Image Element.
Example -
document.getElementById("filetag").addEventListener("change", function(e) {
let newImg = new Image(width, height);
// Equivalent to above -> let newImg = document.createElement("img");
newImg.src = e.target.files[0];
newImg.src = URL.createObjectURL(e.target.files[0]);
output.appendChild(newImg);
});
Reference - https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/Image

You need one input tag to upload file and a image tag to render on the site.
The HTML and Javascript should look like
const renderFile = () => {
const render = document.querySelector('img')
const file = document.querySelector('input[type=file]').files[0]
const reader = new FileReader();
reader.addEventListener('load' , ()=> {
render.src = reader.result;
}, false)
if(file){
reader.readAsDataURL(file);
}
}
<input type = 'file' onchange = 'renderFile()' >
<br>
<br>
<img src = "" alt='rendered image' id='rendered-image' >
Simply on every upload the web page will show the image uploaded
You can Style the height and width of the image according to the need

Visual Studio, Windows 8 HTML5 Javascript Questions

Was not sure what to title this post, I've been having a go at trying to make a little Windows 8 app, I don't have much knowledge and sorry in advance if this is hard to understand, below is my itemDetail.js
(function () {
"use strict";
WinJS.UI.Pages.define("/pages/itemDetail/itemDetail.html", {
// This function is called whenever a user navigates to this page. It
// populates the page elements with the app's data.
ready: function (element, options) {
var item = options && options.item ? Data.resolveItemReference(options.item) : Data.items.getAt(0);
element.querySelector(".titlearea .pagetitle").textContent = item.group.title;
element.querySelector("article .item-title").textContent = item.title;
element.querySelector("article .item-subtitle").textContent = item.subtitle;
element.querySelector("article .item-image").src = item.backgroundImage;
element.querySelector("article .item-image").alt = item.subtitle;
element.querySelector("article .item-content").innerHTML = item.content;
element.querySelector("article .track1").innerHTML = item.track1;
WinJS.Utilities.query("#playMP3").listen("click", getStartVideoFuntion("http://www.ikkmusic.com/ikkmusic.com%20mix.mp3"));
},
});
function getStartVideoFuntion(src) {
return function () {
// Set video element's source
var vid = WinJS.Utilities.query("#playback")[0];
vid.src = src;
vid.play();
};
}})();
So I have a file called data.js which has all the sample data in, and I'm getting the info here and displaying it and it works fine, but my problem is with the bottom one (below) where the url is shown, when the button is pressed it plays the url in the html5 player tag, this works, is there a way for me to put the contents of item.track1 where the URL is now, I can't get it to put the contents of the data there.
WinJS.Utilities.query("#playMP3").listen("click", getStartVideoFuntion("http://www.ikkmusic.com/ikkmusic.com%20mix.mp3"));

WinJS.Utilities.query("#playMP3").listen("click", getStartVideoFuntion(item.track1));

Removing element from web page through firefox extension

I'm going to develop a firefox extension which adds a button beside the file input fields (the <input type="file"> tag) when a file is selected.
The file overlay.js, which contains the extension's logic, manages the "file choose" event through this method:
var xpitest = {
...
onFileChosen: function(e) {
var fileInput = e.explicitOriginalTarget;
if(fileInput.type=="file"){
var parentDiv = fileInput.parentNode;
var newButton = top.window.content.document.createElement("input");
newButton.setAttribute("type", "button");
newButton.setAttribute("id", "Firefox.Now_button_id");
newButton.setAttribute("value", "my button");
newButton.setAttribute("name", "Firefox.Now_button_name");
parentDiv.insertBefore(newButton, fileInput);
}
}
...
}
window.addEventListener("change", function(e) {xpitest.onFileChosen(e)},false);
My problem is that, everytime I choose a file, a new button is being added, see this picture:
http://img11.imageshack.us/img11/5844/sshotn.png
If I select the same file more than once, no new button appears (this is correct).
As we can see, on the first file input, only one file has been selected.
On the second one I've chosen two different files, in effect two buttons have been created...
On the third, I've chosen three different files.
The correct behavior should be this:
when a file is chosen, create my_button beside the input field
if my_button exists, delete it and create another one (I need this, beacuse I should connect it to a custom event which will do something with the file name)
My question is: how can I correctly delete the button? Note that the my_button html code does not appear on page source!
Thanks

Pardon me if I'm thinking too simply, but couldn't you just do this?
var button = document.getElementById('Firefox.Now_button_id')
button.parentNode.removeChild(button)
Is this what you were looking for? Feel free to correct me if I misunderstood you.

Solved. I set an ID for each with the following method:
onPageLoad: function(e){
var inputNodes = top.window.content.document.getElementsByTagName("input");
for(var i=0; i<inputNodes.length; i++){
if(inputNodes[i].type=="file")
inputNodes[i].setAttribute("id",i.toString());
}
}
I call this method only on page load:
var appcontent = document.getElementById("appcontent"); // browser
if(appcontent)
appcontent.addEventListener("DOMContentLoaded", xpitest.onPageLoad, true);
Then I've modified the onFileChosen method in this way:
onFileChosen: function(e) {
var fileInput = e.explicitOriginalTarget;
if(fileInput.type=="file"){
var parentDiv = fileInput.parentNode;
var buttonId = fileInput.id + "Firefox.Now_button_id";
var oldButton = top.window.content.document.getElementById(buttonId);
if(oldButton!=null){
parentDiv.removeChild(oldButton);
this.count--;
}
var newButton = top.window.content.document.createElement("input");
newButton.setAttribute("type", "button");
newButton.setAttribute("id", buttonId);
newButton.setAttribute("value", "my button");
newButton.setAttribute("name", "Firefox.Now_button_name");
parentDiv.insertBefore(newButton, fileInput);
this.count++;
}
}