I am trying to automate resizing of photos in Blogger posts (without much luck). Basically I need a piece of JavaScript that would
find all elements
within each of the elements above find all elements
these are of the form:
<img style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 400px; height: 265px;" src="http://1.bp.blogspot.com/-y8j5IluAe4g/TykduAo1gnI/AAAAAAAAD38/K6VakbKwowU/s400/Czerwony%2BStompee%2Bdla%2Bdzieci.jpeg" alt="" id="BLOGGER_PHOTO_ID_5704123079323910770" border="0" />
For every one of these I need to:
change width: 400px; to width: 556px;
remove height: 256px;
change the string /s400/ in the link to /s556/
So after the changes I get:
<img style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 556px;" src="http://1.bp.blogspot.com/-y8j5IluAe4g/TykduAo1gnI/AAAAAAAAD38/K6VakbKwowU/s556/Czerwony%2BStompee%2Bdla%2Bdzieci.jpeg" alt="" id="BLOGGER_PHOTO_ID_5704123079323910770" border="0" />
The blog I am working with is: http://buczekmruczek.blogspot.com/2012/01/rowerkiem-przez-bedgebury-forest.html (the first photo is resized, the following not)
I would be grateful for hints and/or code samples.
arrayofimgs = document.getelementsbytagname('img')
foreach arrayofimgs
if( strpos(img.src, 'blogspot.com') )
img.style.width='556px';
img.style.height='';
doSomeRegexOrManualStringManipulation(img.src, 's400', 's556')
I'm not sure about changing the source string but to resize the images you can combine jQuery with a custom function as follows:
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script language="JavaScript">
$(document).ready(function(){
resizeImages();
});
function resizeImages(){
var imageTags = document.getElementsByTagName("image");
if (!imageTags || imageTags.length <= 0)
{
imageTags = document.getElementsByTagName("img");
}
if(!imageTags){
return;
}
for(i = 0 ; i < imageTags.length; i++){
imageTags[i].style.width="556px";
imageTags[i].style.height="";
}
}
</script>
<head>
<body>
<image ...
</body>
</html>
For people who want a copy-pastable answer, just paste this script somewhere at the end of the template:
<script type='text/javascript'>
/* <![CDATA[ */
var imageTags = document.getElementsByTagName('img');
for(i = 0 ; i < imageTags.length; i++){
if( imageTags[i].src.indexOf('/s400/', 0)>-1 ) {
if(imageTags[i].style.width=='400px')
imageTags[i].style.width='556px';
else
imageTags[i].style.width='368px';
imageTags[i].style.height='';
imageTags[i].src=imageTags[i].src.replace('/s400/', '/s556/');
}
}
/* ]]> */
</script>
Related
I'm trying to create a simple image gallery with radio buttons. Images are set to Display: none; by default. What I want is for them to display as block when I click on their respective buttons.
<html>
<head>
<style>
.img { width: 250px;
max-height: 300px;
display: none;
}
</style>
<script>
function picture (a) {
var pic = document.getElementById('image')
if (a == 1) {
pic.src="julia1.jpg"
} else { pic.src="julia2.jpg"}
pic.style.display ="block";
}
</script>
</head>
<body>
<img class="img" id="image" src="julia1.jpg">
<form action="">
<input type="radio" onclick="picture(1)" name="picture"></input>
<input type="radio" onclick="picture(2)" name="picture"></input>
</form>
</body>
</html>
On the browser console it says that object is not a function. What does that mean? (thats for both input tags)
The last line should read
pic.style.display = "block";
If anyone looking for simple js gallery check this example :
https://codepen.io/zarokr/pen/ZEzBYvY
let current = document.getElementById('current');
let thumbnails = document.getElementsByClassName('thumb');
for(let i = 0; i<thumbnails.length; i++){
thumbnails[i].addEventListener('click',changeImage);
}
function changeImage(){
let getsrc = this.getAttribute('src');
current.setAttribute('src',getsrc);
}
I have created a basic slider that runs through images every 5 seconds while using javascript. My slider works just fine, but I'm not wanting to use it as an image slider anymore. I'm wanting to create a div with some more html design features and post that within my slider instead of my images. Going by this code below, what would I have to change and add to make it work?
<!doctype html>
<html>
<head>
<title>Ad Slider</title>
<style>
#slider
{
width: 800px;
height: 200px;
}
#sliderImages
{
width: 100%;
height: 100%;
border: 1px solid #06c;
border-radius: 10px;
}
</style>
<script type = "text/javascript">
var image1 = new Image();
image1.src = "sky.jpg";
var image2 = new Image();
image2.src = "chatImage.jpg";
var image3 = new Image();
image3.src = "orange.jpg";
</script>
</head>
<body>
<div id = "slider">
<img id = "sliderImages" src = "sky.jpg" name = "slide" />
<script type = "text/javascript">
var sliderAd = 1
function slideAds()
{
if (!document.images)
{
return;
}
document.images.slide.src = eval("image"+sliderAd+".src")
if (sliderAd < 3)
{
sliderAd++;
}
else
{
sliderAd = 1;
}
setTimeout("slideAds()",5000)
}
slideAds()
</script>
</div>
</body>
</html>
Now instead of adding those images, how can I add this type of content but working the same way like the images were?
<div>
<p>Some Content</p>
</div>
There are plenty of ways to write what you're looking for. Here's an augmented version of your code... You can toss whatever HTML you want into the innerHTML.
In the future, you're better of using Google to read up on the basics of Javascript...
<div id = "container">
</div>
<script type = "text/javascript">
MAXSLIDES = 2
slideText = 1
function slideAds() {
container = document.getElementById("container")
if(slideText == 1) {
container.innerHTML = "test1"
} else if (slideText == 2) {
container.innerHTML = "test2"
}
slideText += 1
if(slideText > MAXSLIDES) { slideText = 1 }
setTimeout("slideAds()",5000);
}
slideAds()
</script>
One of the easiest way is just to create an array of html you need, and than iterate through it inserting in each string as html in your holder div: here is an example from your question the only thing I used jQuery it is much easier that way.
<!doctype html>
<html>
<head>
<title>Ad Slider</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<style>
#slider
{
width: 800px;
height: 200px;
}
#sliderImages
{
width: 100%;
height: 100%;
border: 1px solid #06c;
border-radius: 10px;
}
</style>
<script type = "text/javascript">
var arrayOfDiv = new Array();
arrayOfDiv[0] = "<div style='background-color:#FF0'>this is first div!</div>";
arrayOfDiv[1] = "<div style='background-color:#0ff'>this is second div!</div>";
arrayOfDiv[2] = "<div style='background-color:#f0f'>this is third div!</div>";
var sliderAd = 0;
function slideAds()
{
$("#sliderImages").html(arrayOfDiv[sliderAd]);
if (sliderAd < arrayOfDiv.length-1)
{
sliderAd++;
}
else
{
sliderAd = 0;
}
setTimeout("slideAds()",5000);
}
$(function(){
slideAds();
});
</script>
</head>
<body>
<div id = "slider">
<div id = "sliderImages" ></div>
</div>
</body>
</html>
I am new to this and have a quick question. I have a very simple slideshow on my home page. The problem I am having is the first second or so of loading the page, the slideshow images show up 1 on top of the other. Once the first second or so of loading the page is over, everything works fine. Here is my code for the javascript:
<script type="text/javascript" language="javascript">
window.onload = function () {
var rotator = document.getElementById("slideshow_content");
var images = rotator.getElementsByTagName("img");
for (var i = 1; i < images.length; i++) {
images[i].style.display = "none";
}
var counter = 1;
setInterval(function () {
for (var i = 0; i < images.length; i++) {
images[i].style.display = "none";
}
images[counter].style.display = "block";
counter++;
if (counter == images.length) {
counter = 0;
}
}, 3000);
};
</script>
Here is the body code:
<div id="slideshow">
<div id="slideshow_content" style="padding-top:10px; padding-bottom:10px;">
<img alt="" src="/images/slide1.jpg" />
<img alt="" src="/images/slide2.jpg" />
</div>
</div>
Here is the CSS for the 2 divs:
#slideshow {position:relative; top:0; left:0; max-width:1680px; height:342px; margin:0 auto; padding:0; background-color:#070707;}
#slideshow_content {width:960px; max-height:322px; margin:0 auto; padding:0;}
How would you recommend fixing this?
I would set the CSS to hide the slideshow on page load, and then when the slideshow starts it could be unhidden.
This would also mean that if someone had javascript disabled they wouldn't get a weird looking pile of images.
Alternatively you could hide all but the first image using CSS, so that even if someone had javascript disabled they would see the first image.
How to set up animation to element once it appears? (So that others with same properties remain calm.) I am trying to do like this:
$.each(data, function(i, obj) {
if(obj['Ping'] == "FALSE"){
out = "<li class='red'>"+obj.Vardas+" is down..."+obj.Data+"</li>";
/////animation, once the element gets generated
$(out).prependTo('#database').animate({fontColor:"red", 1000});
out ="";
}else{
out = "<li>"+obj.Vardas+" is up......."+obj.Data+"</li>";
$(out).prependTo('#database');
out ="";
}
});
});
});
</script>
</head>
<body>
<div style="float:right; overflow-y:scroll; height: 400px; width: 50%">
<ul id ='database'></ul>
</div>
jQuery is not able to use color for animation. But for such things you can use jQuery Color plugin ( https://github.com/jquery/jquery-color ).
Here is small working example with opacity blink:
<head>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<script>
var t = function(){
for(var i = 0; i < 5; i++){
$("<li>ata" + i + "tata</li>").prependTo($("ul")).animate({opacity: 0.10}, 200).animate({opacity: 1}, 200);
}
}
$(function(){
setInterval(t, 1000);
});
</script>
</head>
<body>
<ul> </ul>
</body>
</html>
Trying to figure out how to switch from one to two images then back to one with an onlick.
So far I have below which works no problem for switching to one image and back to original image. Ultimately I'm trying to get the first onclick event to be two images vertically and then click again back to the first single image.
var play = false;
function toggle() {
var image = document.getElementById('image')
var scan = document.getElementById('scan');
play = !play;
if (play) {
image.src = "pause.png";image.width="182";image.height="182";image.border="0";
scan.play();
}
else {
image.src = "play.png";image.width="182";image.height="182";image.border="0";
scan.pause();
}
}
and in body:
<img onclick="toggle()" id="image" src="play.png" alt="image" width="182" height="182" style="margin:auto; position:absolute; top: 0; right: 0; bottom: 0; left: 0; border: 0;">
This should work fine except, take out the width, height and border from the javascript, they're not changing so why have it there and risk some browsers freaking out on them?
I just put this together real quick to test and it works a treat.. I've commented out scan.play and pause of course but I'm assuming you've checked the console in your browser to see if those are throwing any errors?
I took the <a> out and used style cursor=pointer instead for the click-able element as well.. either way works but this is neater and works from ie6 I think, ie7+ definately.
edit: removed source block didn't achieve goal of question
After discussion in comment there's heaps of ways to do it, and I'd probably use jQuery but since you're not here's one not
<!doctype html>
<html>
<head>
<script type="text/javascript">
var play = true;
function toggle() {
//var scan = document.getElementById('scan');
var playpause = document.getElementById('playpause');
var btnplay = playpause.getElementsByClassName('play');
var btnpause = playpause.getElementsByClassName('pause');
play = !play;
if (play) {
btnplay[0].className = 'btn play active';
btnpause[0].className = 'btn pause';
//scan.play();
}
else {
btnplay[0].className = 'btn play';
btnpause[0].className = 'btn pause active';
//scan.pause();
}
}
</script>
<style>
.btn {
width: 182px;
height: 182px;
cursor: pointer;
position: absolute;
visibility: hidden;
}
.btn.active { visibility: visible; }
.btn.play { background: url('play.png') no-repeat 0 0; }
.btn.pause {
background: url('pause.png') no-repeat 0 0;
padding: 182px 0 0 0;
}
</style>
</head>
<body>
<div id="playpause">
<div class="btn play active" onclick="toggle()">
</div>
<div class="btn pause" onclick="toggle()">
<img src="other.png" alt="other" />
</div>
</body>
</html>