I have created website which code can be found here: https://jsfiddle.net/7y373j8x/2
I have created a box which appears when clicking on "Portfolio". (The box is called "object2").
I want to insert PNG images inside of this box. Some have suggested to me to do a jQuery slider but I don't want a slideshow. I want the images to be placed next to each other (as thumbnails) and then the user can click on an image and it should become bigger.
HTML:
<img id="map" src="http://www.local-guru.net/img/guru/worldglow.png" alt="map" />
<div class="container">
<p>About me</p>
<div id="portfolio" onclick="show();">Portfolio</div>
<p>Contact me</p>
<div id="object2" onclick="show();">
</div>
</div>
CSS:
#map {
background-attachment: fixed;
}
.container {
color: yellow;
position: fixed;
top: 54%;
left: 58px;
font-family: normal normal 15px Calibri;
}
#object2 {
border-radius: 15px 50px;
background: black;
position: fixed;
bottom: 200px;
right: 400px;
width: 650px;
height: 350px;
cursor: pointer;
display: none;
z-index: 999;
opacity: 0.4;
}
JavaScript:
function show() {
document.getElementById("object2").style.display = "block";
}
you can append the images using javascript or jquery.
update your show() method like this.
function show(){
document.getElementById("object2").style.display = "block";
var image = new Image();
image.src = 'https://placehold.it/350x150';
var image1 = new Image();
image1.src = 'https://placehold.it/200x100';
$('#object2').html('');
$('#object2').append(image);
$('#object2').append(image1);
}
here's the updated JSFIDDLE for the same. hope it helps.
The reason why your function is not working is because onclick operates within the page scope so it can't execute any functions outside of it.
If I moved the script within the same scope, it will work as you can see here:
JavaScript jsfiddle: https://jsfiddle.net/AndrewL32/saTfR/60/
( I have replaced your style.display = "block" with .style.cssText = 'display: block'; )
jQuery Approach
If you are interested in using jQuery, here is a cleaner and easier jQuery approach to modifying css properties with js:
$("#portfolio").click(function(){
$("#object2").css("display", "block");
});
jQuery jsfiddle: https://jsfiddle.net/AndrewL32/saTfR/58/
Related
I have a requirement where I need to show overlay on image on mobile devices whenever user touches the image. I am doing it with the code shown below:
document.getElementsByTagName('img')[0].addEventListener('touchstart', function(event){
let elementExists = document.getElementById('wrapper');
let Center = document.createElement('div');
if (!elementExists) {
let Wrapper = document.createElement('div');
let parentElement = event.currentTarget.parentElement;
Wrapper.classList.add('Wrapper');
Wrapper.id = 'wrapper';
Center.classList.add('Center');
parentElement.appendChild(Wrapper);
Wrapper.appendChild(Center);
Wrapper.addEventListener('touchend', function(event){
if (document.getElementById('wrapper')) {
document.getElementById('wrapper').remove();
}
});
}
});
.col-md-6 {
width: 375px;
height: 211px;
margin: 20px;
position: relative;
}
.Wrapper {
display: table;
position: absolute;
background-color: rgba(0, 0, 0, 0.5);
height: 100% !important;
width: 100%;
text-align: center;
z-index: 1000;
font-family: arial;
color: #fff;
top: 0;
}
.Center {
display: table-cell;
vertical-align: middle;
}
<div class="col-md-6">
<a href="https://google.com">
<img src="https://www.blog.google/static/blog/images/google-200x200.7714256da16f.png" />
</a>
</div>
The above code works fine, but I have image wrapped in a tag so by default it showing me screen when user touches an image as shown below:
And because of it overlay is not displaying on mobile screen. I would require help how can I fix it.
EDIT:
I am thinking of adding touch swipe event using plain JavaScript but I am not able to do it exactly.
Please let me know if I can get any help!
Why not just leave out the link and just add the event listener directly to the image?
Native behaviour for links on mobile devices works as you explained. It will trigger menu when holding. If you don't need link just remove it like Bojan said.
I am working on a piece of legacy code for a table. In certain cells, I'm adding a notice icon. When you hover over the icon a <span> is made visible displaying some information. I would like to be able to make this <span> smart about its positioning but can't figure out a good method. I can statically position it but depending on which cell in the table it is in it gets lost against the edge of the page. I have done a JsFiddle here demonstrating the issue. Unfortunately, I am not allowed to use anything but HTML, CSS and vanilla JS.
The title attribute to most tags is pretty smart about its position. I have added a title to one of the cells in the table in the jsFiddle (cell containing "Hello"). Is there any way to make my span exhibit the same smart behaviour?
A pop-up can be added before any element by putting the popup html code inside a 'div' with 'position:absolute; overflow:visible; width:0; height:0'.
When these events: 'onmouseenter', 'onmouseleave' are fired on the element, just toggle the popup css attribute 'display' between 'none' and 'block' of the element.
Example on jsfiddle:
https://jsfiddle.net/johnlowvale/mfLhw266/
HTML and JS:
<div class="popup-holder">
<div class="popup" id="popup-box">Some content</div>
</div>
Some link
<script>
function show_popup() {
var e = $("#popup-box");
e.css("display", "block");
}
function hide_popup() {
var e = $("#popup-box");
e.css("display", "none");
}
</script>
CSS:
.popup-holder {
position: absolute;
overflow: visible;
width: 0;
height: 0;
}
.popup {
background-color: white;
border: 1px solid black;
padding: 10px;
border-radius: 10px;
position: relative;
top: 20px;
width: 300px;
display: none;
}
how can i fix this? when i click "smile" it appears smile but when i click sad it also appear a smiley face.
SMILE<br>
<div id="light"><img src="http://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Smiley.svg/1024px-Smiley.svg.png" width=100 height=100></div>
SAD
<div id="light"><img src="http://www.clipartbest.com/cliparts/MiL/kkB/MiLkkBAia.png" width=100 height=100></div>
<div id="fade" onClick="lightbox_close();"></div>
CSS: fade for the close and light is for the the lightbox.
#fade{
display: none;
position: fixed;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
background-color: #000;
z-index:1001;
-moz-opacity: 0.7;
opacity:.70;
filter: alpha(opacity=70);
}
#light{
display: none;
position: absolute;
top: 50%;
left: 50%;
width: 300px;
height: 200px;
margin-left: -150px;
margin-top: -100px;
padding: 10px;
border: 2px solid #FFF;
background: #CCC;
z-index:1002;
overflow:visible;
javascript: for the open and close function
window.document.onkeydown = function (e)
{
if (!e){
e = event;
}
if (e.keyCode == 27){
lightbox_close();
}
}
function lightbox_open(){
window.scrollTo(0,0);
document.getElementById('light').style.display='block';
document.getElementById('fade').style.display='block';
}
function lightbox_close(){
document.getElementById('light').style.display='none';
document.getElementById('fade').style.display='none';
You cannot use the same ID twice. You must use unique ID's.
Try this:
In the HTML, give your two light divs each a unique ID, for example lightSmile and lightSad.
In order to be able to use the same CSS for both lightboxes, give both boxes a class lightbox, and in the CSS, change the #light to .lightbox.
Finally, change the lightbox_open() function to the one below here.
HTML
SMILE<br>
<div class="lightbox" id="lightSmile"><img src="http://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Smiley.svg/1024px-Smiley.svg.png" width=100 height=100></div>
SAD
<div class="lightbox" id="lightSad"><img src="http://www.clipartbest.com/cliparts/MiL/kkB/MiLkkBAia.png" width=100 height=100></div>
<div id="fade" onClick="lightbox_close();"></div>
CSS
.lightbox{
display: none;
...
}
JS
function lightbox_open(id){
window.scrollTo(0,0);
document.getElementById(id).style.display='block';
document.getElementById('fade').style.display='block';
}
function lightbox_close(){
document.getElementById('lightSmile').style.display='none';
document.getElementById('lightSad').style.display='none';
document.getElementById('fade').style.display='none';
}
If you look at the HTML, you see that now a string of the lightbox's ID is send along when lightbox_open() is called.
In the function, this ID-string is supplied as a variable (between the brackets: id). And in the line where lightbox's display-style is changed, this id is used.
In the close-function, the display-style of both the lightbox's is set back to default.
UPDATE
If you have a lot of lightboxes, it's easier to access the lightboxes by classname in the close-function:
function lightbox_close(){
var list = document.getElementsByClassName('lightbox');
for (var i=0; i<list.length; i++) {
list[i].style.display = 'none';
}
document.getElementById('fade').style.display='none';
}
And if you're willing to use jQuery, you can do that with one line (and probably more reliably cross-browser):
function lightbox_close(){
$('.lightbox').css('display','none'); //<--------------jQuery
document.getElementById('fade').style.display='none';
}
I'm looking for the best way to do a progress bar (in my case it's a life bar for a game) in an html5 canvas.
I don't know if it's better to use javascript and dom element, or draw this bar directly in the canvas.
I need an update function, for example myBar.updateValue(40), and I need to show the new bar without refresh all the page or all the canvas, of course.
Do you know something like that? An existing script? Thanks!
It’s very easy in HTML/CSS:
<style>
#progress-holder{width:400px;height:20px;background:grey}
#progress{width:0;height:100%;background:black}
</style>
<div id="progress-holder">
<div id="progress"></div>
</div>
<script>
var progress = document.getElementById('progress');
function updateValue(perc) {
progress.style.width = perc+'%';
}
updateValue(40);
</script>
DEMO: http://jsbin.com/EGAzAZEK/1/edit
And animating with CSS: http://jsbin.com/EGAzAZEK/3/edit
HTML:
<div class='progress'>
<div class='progress-bar' data-width='//Enter a percent value here'>
<div class='progress-bar-text'>
Progress: <span class='data-percent'>//This is auto-generated by the script</span>
</div>
</div>
</div>
CSS:
html, body {
margin: 0;
padding: 15px;
width: 100%;
height: 100%;
position: relative;
color: #fff;
}
.progress {
position: relative;
width: 100%;
height: 30px;
}
.progress-bar {
margin-bottom: 5px;
width: 0%;
height: 30px;
position: relative;
background-color: rgb(66, 139, 202);
}
.progress-bar-text {
position: absolute;
top: 0px;
width: 100%;
text-align: center;
/*
Do not change the values below,
unless you want your text to display away from the bar itself. */
line-height: 30px;
vertical-align: middle;
}
jQuery:
$('.progress-bar').each(function (){
var datawidth = $(this).attr('data-width');
$(this).find("span.data-percent").html(datawidth + "%");
$(this).animate({
width: datawidth + "%"
}, 800);
});
Link to JSFiddle
The HTML data-width attribute is used to track the percent the bar should be set to. Change it to your liking.
The jQuery script works with ALL progress bars on your page (See the JSFiddle, so you don't have to copy and paste the same jQuery for every new progress bar.
(Just be sure to keep the structure of the HTML, or change it to your liking).
The div "progress" is just an expander, it can be named whatever your want - without you having to change the jQuery.
EDIT:
If you can use Javascript & HTML, don't use a canvas. Canvas (imho) are good for only 1 thing: Seat bookings for concerts, theaters and alike.
I'm working on project to provide a bolt-on tool for websites, which makes heavy use of jQuery. Presentation / design is crucial, and I want to replace the standard (ugly) scrollbar applied by the browser to html elements with overflowing content, with something better looking.
There are numerous jQuery plug-ins around that apply custom scrollbars and allow styling via CSS which is great, but all the ones I've tried seem to suffer from the same problem which is this: if the scrollable content contains a form with text fields etc, tabbing between fields does not activate the scrollbar, and in some cases can screw up the custom scrollbar layout altogether.
Two examples of plug-ins I've tried:
http://manos.malihu.gr/jquery-custom-content-scroller
http://baijs.nl/tinyscrollbar/
I've tried others also, but in all demos / examples the content is plain text. I've done a lot of searching on this already, but it seems no-one has tried using these plug-ins with form-based content.
All these plug-ins seem to work in more or less the same way, and I can see exactly what happens and why, but just wondered if anyone else has had this problem and / or found a solution?
This issue can be easily replicated as follows (using the tinyscrollbar plug-in):
Add this to a standard html test page -
CSS:
<style>
#tinyscrollbartest { width: 520px; height: 250px; padding-right: 20px; background-color: #eee; }
#tinyscrollbartest .viewport { width: 500px; height: 200px; overflow: hidden; position: relative; }
#tinyscrollbartest .overview { list-style: none; position: absolute; left: 0; top: 0; }
#tinyscrollbartest .scrollbar { position: relative; float: right; width: 15px; }
#tinyscrollbartest .track { background: #d8eefd; height: 100%; width: 13px; position: relative; padding: 0 1px; }
#tinyscrollbartest .thumb { height: 20px; width: 13px; cursor: pointer; overflow: hidden; position: absolute; top: 0; }
#tinyscrollbartest .thumb .end { overflow: hidden; height: 5px; width: 13px; }
#tinyscrollbartest .thumb, #tinyscrollbartest .thumb .end { background-color: #003d5d; }
#tinyscrollbartest .disable { display: none; }
</style>
Html:
<div id="tinyscrollbartest">
<div class="scrollbar">
<div class="track">
<div class="thumb">
<div class="end"></div>
</div>
</div>
</div>
<div class="viewport">
<div class="overview">
</p>Here's a text field: <input type="text"/><p>
...
// lots of content to force scrollbar to appear,
// and to push the next field out of sight ..
...
<p>Here's another field: <input type="text"/></p>
</div>
</div>
</div>
Plug-in reference (assuming jquery libraries etc are referenced also):
<script type="text/javascript" src="scripts/jquery.tinyscrollbar.min.js"></script>
Jquery code:
<script type="text/javascript">
$(document).ready(function () {
$('#tinyscrollbartest').tinyscrollbar();
});
</script>
Now click in the first text field so it has focus, hit the tab key to move to the next one and see what happens.
I understand your problem.. But is hard to find a good solution to this. You could try to set a focus event on your form elements. And let this event trigger the scrollbar_update function of tinyscrollbar. You can set the offsetTop of the form element that currently has focus as the methods parameter. I think that would work.
$('formelements').focus(function(){
YourScrollbar.tinyscrollbar_update(this.offsetTop);
});
I had to overwrite the standard tabbing functionality with my own:
$(".scrollable").each(function() {
if (!$(this).data("scrollbar"))
{
$(this).data("scrollbar", new Scrollbar({
holder:$(this)
}));
$(this).find("input").bind("keydown", function(e)
{
var keyCode = e.keyCode || e.which;
if (keyCode == 9)
{
e.preventDefault();
var scrollTo = $(this);
if (e.shiftKey)
{
var nextInput = $(this).prevAll("input:not([type=hidden])").first();
scrollTo = nextInput.prevAll("input:not([type=hidden]), label").first();
}
else
{
var nextInput = $(this).nextAll("input:not([type=hidden])").first();
}
if (nextInput.length)
{
console.log(scrollTo);
$(this).closest(".scrollable").data("scrollbar").scrollTo(scrollTo, function()
{
nextInput.focus().select();
});
}
}
});
}
});
It's a bit annoying to have to wait for the scroll but I don't see any other option.