Develop Reference

Using the duration of mouse press for scrolling

I coded this:
$("#scroll-to-left-button").on("mousedown", function() {
var x = $("#scroll-area").scrollLeft();
$("#scroll-area").scrollLeft(x - 10);
});
$("#scroll-to-right-button").on("mousedown", function() {
var x = $("#scroll-area").scrollLeft();
$("#scroll-area").scrollLeft(x + 10);
});
#container {
width: 50%;
height: 100px;
background-color: grey;
position: relative;
}
#scroll-area {
white-space: nowrap;
overflow-x: auto;
height: 100%;
}
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<div id="container">
<div id="scroll-area">
<div id="text">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.</div>
</div>
</div>
<button id="scroll-to-left-button">Scroll to left</button>
<button id="scroll-to-right-button">Scroll to right</button>
You need to click the buttons pretty often to navigate through this container. Is there a way to let it based on the duration of the mouse press? Like if you keep the mouse pressed, it continues constantly scrolling? And if you stop, it stops.
Would be happy if someone could help me.

Here's a working solution. Also your code was a bit wet, so I refactored it a bit. You only need one mousedown event listener.
let interval;
$('.scroll-btn').on('mousedown', ({ target }) => {
const type = $(target).attr('id');
interval = setInterval(() => {
var x = $('#scroll-area').scrollLeft();
$('#scroll-area').scrollLeft(type === 'left' ? x - 10 : x + 10);
}, 50);
});
$('.scroll-btn').on('mouseout mouseup', () => clearInterval(interval));
#container {
width: 50%;
height: 100px;
background-color: grey;
position: relative;
}
#scroll-area {
white-space: nowrap;
overflow-x: auto;
height: 100%;
}
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<div id="container">
<div id="scroll-area">
<div id="text">
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua.
</div>
</div>
</div>
<button id="left" class="scroll-btn">Scroll Left</button>
<button id="right" class="scroll-btn">Scroll Right</button>

Well, the mousedown and mouseup make a good pair, although you have used only mousedown :)
Here's a sample how it could be done.
Note that there're couple other things that could be done to this code for it to look nicer:
.on(... is not probably needed, you could just write it as .mousedown(...
the code for the right and left buttons look really similar, you could unite these blocks in one and distinguish by an additional attrubute (let's say like move="10" for the right button and move="-10" for the left one, and then just getting this value in order to add it to scrollLeft)
var tmr;
$(".scroll-button").mousedown(function() {
//let's setup the timer here...
move = +$(this).attr("move");
tmr = setInterval(function(){
$("#scroll-area")[0].scrollLeft+=move;
}, 250)
});
$(".scroll-button").mouseup(function() {
// and destroy the timer here
clearInterval(tmr);
});
#container {
width: 50%;
height: 300px;
background-color: grey;
position: relative;
}
#scroll-area {
white-space: nowrap;
overflow-x: auto;
height: 100%;
}
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<div id="container">
<div id="scroll-area">
<div id="text">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.</div>
</div>
</div>
<button class="scroll-button" move="-10">Scroll to left</button>
<button class="scroll-button" move="10">Scroll to right</button>

CSS simultaneous transition on multiple elements

So, I have 3 flexbox containers of the same dimension. When I click on one of them, it should stretch to become bigger then the others, and then back to normal if I click on it again.
I've made it using JS, and it works.
The problem is that when I already have one the boxes stretched and I try to stretch another one, the transition duration increases. And I can't figure out why. I thought the different transitions would start simultaneously.
This is the code:
/* HTML */
<div class="flexbox">
<div class="box-1" onclick="box1();">
<h3>Box 1</h3>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore</p>
</div>
<div class="box-2" onclick="box2();">
<h3>Box 2</h3>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore</p>
</div>
<div class="box-3" onclick="box3();">
<h3>Box 3</h3>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore</p>
</div>
</div>
/* CSS */
.flexbox {
display: flex;
width: auto;
justify-content: center;
}
.flexbox div {
border: 1px #ccc solid;
border-radius: 10px;
width: 250px;
height: 250px;
padding: 10px;
margin: 2px 10px;
transition: flex-grow 1s linear 0s;
}
.box-1{
flex-grow: 0;
}
.box-2 {
flex-grow: 0;
}
.box-3 {
flex-grow: 0;
}
/* JS */
function box1(){
const box1 = document.getElementsByClassName('box-1')[0];
if(box1.style.flexGrow != '4'){
box1.style.flexGrow = '4';
} else {
box1.style.flexGrow = '0';
}
const box2 = document.getElementsByClassName('box-2')[0];
box2.style.flexGrow = '0';
const box3 = document.getElementsByClassName('box-3')[0];
box3.style.flexGrow = '0';
}
function box2(){
const box2 = document.getElementsByClassName('box-2')[0];
if(box2.style.flexGrow != '4'){
box2.style.flexGrow = '4';
} else {
box2.style.flexGrow = '0';
}
const box1 = document.getElementsByClassName('box-1')[0];
box1.style.flexGrow = '0';
const box3 = document.getElementsByClassName('box-3')[0];
box3.style.flexGrow = '0';
}
function box3(){
const box3 = document.getElementsByClassName('box-3')[0];
if(box3.style.flexGrow != '4'){
box3.style.flexGrow = '4';
} else {
box3.style.flexGrow = '0';
}
const box1 = document.getElementsByClassName('box-1')[0];
box1.style.flexGrow = '0';
const box2 = document.getElementsByClassName('box-2')[0];
box2.style.flexGrow = '0';
}
How can I have the transition duration to be always the same (1s in this example)?

There are a number of improvements that can be made to your code that will reduce duplication, avoid complications of interacting with the live HTMLCollection that getElementsByClassName returns, allow you to avoid using inline onclick assignments, and will cause the transition to only take 1 second.
The example below implements a single grow() function which is called by listeners attached to each box. The listeners are added by iterating over the NodeList returned by querying the DOM with .querySelectorAll('.box') and calling addEventListener() on each element.
In the CSS we declare classes for each state we want our boxes to be able to have - in this case flex-grow: 0 and flex-grow:4. Then in our grow() function we simply add or remove these styles as necessary based on which box was clicked.
function grow(e){
// if the clicked box already has class 'flexgrow4' return
if (e.currentTarget.classList.contains('flexgrow4')) return;
// otherwise find the element in the flexbox container that has
// class 'flexgrow4' and replace it with 'flexgrow0'
const lastActive = flexbox.querySelector('.flexgrow4');
if (lastActive) lastActive.classList.replace('flexgrow4', 'flexgrow0');
// finally, replace 'flexgrow0' with 'flexgrow4' on the clicked box
e.currentTarget.classList.replace('flexgrow0', 'flexgrow4');
}
const flexbox = document.querySelector('.flexbox');
const boxes = document.querySelectorAll('.box')
boxes.forEach(box => box.addEventListener("click", grow, false));
.flexbox {
display: flex;
width: 100vw;
justify-content: center;
}
.flexbox div {
border: 1px #ccc solid;
border-radius: 10px;
width: 100px;
height: 250px;
padding: 10px;
margin: 2px 10px;
transition: all 1s linear 0s;
}
.flexgrow0 {
flex-grow: 1;
}
.flexgrow4 {
flex-grow: 4;
background-color:tomato;
}
<div class="flexbox">
<div class="box flexgrow0">
<h3>Box 1</h3>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore</p>
</div>
<div class="box flexgrow0">
<h3>Box 2</h3>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore</p>
</div>
<div class="box flexgrow0">
<h3>Box 3</h3>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore</p>
</div>
</div>

restart setinterval a new position

I have a "setinterval" to change my slides. With a button to change the slide. But once i click the button to change slide the "setinterval" will reset to where it was +1.
I want it to restart my +1 button
https://jsfiddle.net/8s6r3qay/
<section class="testimony">
<div class="testimony__content">
<article class="testimony__content--pers">
<div class="pers"></div>
<p class="comment"> Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna.</p>
<p class="name">Gabrielle, 35 ans</p>
</article>
<aside class="aside hide-xs">
<div class="bulletOrange pers1" onclick="stopSliderPers(0)"></div>
<div class="bulletGrey pers2" onclick="stopSliderPers(1)"></div>
<div class="bulletGrey pers3" onclick="stopSliderPers(2)"></div>
</aside>
</div>

I've adopted a previous answer of mine for an image slider to add buttons that will let you jump to a specific slide and have the slideshow continue from there. Perhaps it has some code you can reuse in your solution.
const
delayBetweenPictures = 2000,
numberOfPictures = 4,
initialPicture = 1,
image = document.getElementById('slideshow'),
slideControl = document.getElementById('slide-control');
let
timeoutId;
function moveHighlight(pictureIndex) {
const
oldButton = slideControl.querySelector('.highlight'),
newButton = slideControl.querySelector(`[data-index="${pictureIndex}"]`);
if (oldButton !== null) {
oldButton.classList.remove('highlight');
}
if (newButton !== null) {
newButton.classList.add('highlight');
}
}
function changeToPicture(pictureIndex) {
// console.log(`Changing picture to index ${pictureIndex}`);
// Change the image
image.src = `http://lorempixel.com/320/200/cats/${pictureIndex}`;
moveHighlight(pictureIndex);
// Use a modulo operator to turn 4 (number of pictures) back to 0 and add 1 so the range becomes 1...number of pictures.
pictureIndex = (pictureIndex % numberOfPictures) + 1;
// Set a timeout of X ms after which the changeToPicture method is called again, this time with the new value of pictureIndex.
timeoutId = setTimeout((newIndex) => changeToPicture(newIndex), delayBetweenPictures, [pictureIndex]);
}
function onSlideControlClicked(event) {
const
button = event.target,
index = parseInt(button.getAttribute('data-index'));
// Clear the timeout or else we will be starting another timeout loop.
clearTimeout(timeoutId);
// Change to the picture for which the user clicked the button.
changeToPicture(index);
}
slideControl.addEventListener('click', onSlideControlClicked);
changeToPicture(initialPicture);
button {
font: inherit;
}
ul {
display: flex;
list-style:none;
}
li + li {
margin-left: 1em;
}
.highlight {
box-shadow: 0 0 1em #000;
}
<img id="slideshow">
<p>Jump to slide:</p>
<ul id="slide-control">
<li><button type="button" data-index="1">1</button></li>
<li><button type="button" data-index="2">2</button></li>
<li><button type="button" data-index="3">3</button></li>
<li><button type="button" data-index="4">4</button></li>
</ul>

My new code work:
HTML :
<section class="testimony">
<div class="testimony__content">
<article class="testimony__content--pers">
<div class="pers"></div>
<p class="comment"> Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna. </p>
<p class="name">Gabrielle, 35 ans</p>
</article>
<aside class="aside hide-xs">
<div class="bulletOrange pers1" onclick="stopSliderPers(0)"></div>
<div class="bulletGrey pers2" onclick="stopSliderPers(1)"></div>
<div class="bulletGrey pers3" onclick="stopSliderPers(2)"></div>
</aside>
</div>
</section>
JS:
var persData = [{
src: "./assets/img/pers-1.png",
comment: "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna. ",
name: "Gabrielle, 35 ans"
},
{
src: "./assets/img/pers-2.jpg",
comment: "Suspendisse leo neque, egestas vitae dapibus sit amet, lacinia sed lorem. Aliquam quam odio, eleifend sed lectus. ",
name: "Bernard, 28 ans"
},
{
src: "./assets/img/pers-3.jpg",
comment: "Maecenas posuere velit in suscipit lobortis. Nam luctus justo quis aliquam molestie. Suspendisse sit amet blandit leo. ",
name: "Julie, 22 ans"
}
];
var intervalPers;
index = 1;
function changePers(index) {
var indexUse = index + 1;
var pers = persData[index];
$(".testimony__content--pers .pers").fadeOut(1000, function() {
$(this).css("background-image", "url(" + pers.src + ")").fadeIn(1000);
});
$(".testimony__content--pers .comment").fadeOut(1000, function() {
$(this).text(pers.comment).fadeIn(1000);
});
$(".testimony__content--pers .name").fadeOut(1000, function() {
$(this).text(pers.name).fadeIn(1000);
});
for (var i = 1; i <= 3; i++) {
if (i === indexUse) {
$(".testimony .aside .pers" + i).removeClass("bulletGrey");
$(".testimony .aside .pers" + i).addClass("bulletOrange");
} else {
$(".testimony .aside .pers" + i).removeClass("bulletOrange");
$(".testimony .aside .pers" + i).addClass("bulletGrey");
}
}
}
function startSliderPers(index) {
intervalPers = setInterval(function(){
if (index > 2) {
index = 0;
} else if(index < 0){
index = 2;
}
changePers(index);
index++;
}, 5000);
}
startSliderPers(index);
function stopSliderPers(index) {
clearInterval(intervalPers);
changePers(index);
setTimeout(function(){
index++;
startSliderPers(index);
},5000);
}

Dynamically resizing a container containing a Handsontable

This is the HTML I got:
<div class="preview-content">
<h1 class="preview-content-header">Vorschau - Notiz1.txt <img src="icons/cross.png" /></h2>
<div>
<h2>Notiz1.txt</h2>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
</div>
</div>
<img id="preview-toggle" src="icons/preview.png">
<div class="main-content">
<h2 class="main-content-header">Datenbank</h2>
<div id="table">
</div>
</div>
This is the corresponding CSS:
/* General Style */
html, body {
margin: 0px;
padding: 0px;
background: $background-color;
font-family: $font;
overflow-x: hidden;
}
/* Main Content */
div.main-content {
padding: 50px 0px 20px 70px;
width: 45%;
overflow: auto;
h2.main-content-header {
margin: 0;
}
}
#preview-toggle {
display: none ;
position: fixed;
z-index: 3;
top: 50px;
right: 0;
width: 40px;
height: 40px;
padding: 5px;
background-color: $nav-color;
color: $font-color-secondary;
cursor: pointer;
transition: .3s background-color;
-webkit-transition: .3s background-color;
}
#preview-toggle:hover {
background-color: $main-color;
}
/* Preview */
div.preview-content {
position: fixed;
z-index: 3;
right: 0px;
margin: 0;
width: 50%;
height: 100%;
font-size: 70%;
img {
float: right;
height: 25px;
padding: 0px 15px 0px 0px;
cursor: pointer;
}
h1 {
position: relative;
z-index: 3;
width: 100%;
margin: 0;
padding: 5px 5px 5px 10px;
background-color: $preview-header-color;
color: $font-color-secondary;
white-space: nowrap;
}
div {
position: fixed;
z-index: 3;
height: 100%;
margin: 0;
padding: 10px;
background-color: $data-background-color;
overflow-y: auto;
overflow-x: hidden;
white-space: pre-line;
word-wrap: break-word;
}
}
/* Database table */
#table {
z-index: 1;
}
Here is the animation to toggle the preview container on/off:
$(document).ready(function() {
$(' .preview-content-header img').click(function() {
$('.main-content').animate({
width: "100%"
});
$('.preview-content').animate({
width: "0%"
}, 300, function() {
$('#preview-toggle').toggle();
});
$('.preview-content img').toggle();
});
$('#preview-toggle').click(function() {
$('.main-content').animate({
width: "45%"
});
$('#preview-toggle').toggle();
$('.preview-content').animate({
width: "50%"
}, 300, function() {
$('.preview-content img').toggle();
});
});
});
Here is the code for the Handsontable:
$(document).ready(function() {
var data = [
["Dateiname", "Benutzer", "Erstelldatum", "Änderungsdatum", "Erste Zeile", "Kategorie", "Projekt"],
["Rechnung1.doc", "SB", "01.01.2010", "-", "Internetrechnung", "Rechnungen", "Haushalt"],
["Rechnung2.doc", "SB", "01.01.2012", "-", "Stromrechnung", "Rechnungen", "Haushalt"]
];
var container = $('#table');
container.handsontable({
data: data,
minSpareRows: 1,
rowHeaders: true,
colHeaders: true,
contextMenu: true
});
});
The scenario is as follows:
I've got a .main-content which takes up the whole window containing a Handsontable and a .preview-content which expands it width and shows content as soon as you click on the toggle button within the .main-content. The .preview-content is fixed and doesn't scroll with the .main-content.
The problem is that when the screen displaying the website is not big enough the .preview-content will cover parts of the Handsontable within the .main-content.
To prevent this from happening I wanted to change the width and height of the container containing the Handsontable dynamically so that I get scrollbars in case the table gets covered in parts.
I've tried many things so far but nothing seems to work. And it seems like Handsontable only likes absolute pixel dimensions for its width and height, otherwise overflow: hidden doesn't seem to work.
I've tried to change the width of the .main-content from 100% to 45% and added overflow: auto to the .main-content as you can see in the code, but that doesn't work as it behaves very strange.
Maybe someone has any idea how I can change the width of a Handsontable dynamically?
Your help is very appreciated. And if you need any more info to help me just say it I will see if I can provide the right info.

To dynamically change the width of a Handsontable instance you can do:
hotInstance.updateSettings({
width: newWidth
});
Give that a try as this should take care of the CSS pitfalls of manually setting the .main-content width yourself.

Using the HandsonTable.updateSettings() and jQuery to dynamically resize the table whenever the window is resized:
$(document).ready(function(){
$(window).resize(function(){
hotInstance.updateSettings({
width: $('hotWrapperDiv').width()
});
});
});

you can use resize event of Handsontable, and in calculateSize function write code to calculate height and width
Handsontable.Dom.addEvent(window, 'resize', calculateSize);

Show more/less with effect

I found this code: link
$(".show-more a").on("click", function() {
var $this = $(this);
var $content = $this.parent().prev("div.content");
var linkText = $this.text().toUpperCase();
if(linkText === "SHOW MORE"){
linkText = "Show less";
$content.switchClass("hideContent", "showContent", 400);
} else {
linkText = "Show more";
$content.switchClass("showContent", "hideContent", 400);
};
$this.text(linkText);
});​
CSS:
div.text-container {
margin: 0 auto;
width: 75%;
}
.hideContent {
overflow: hidden;
line-height: 1em;
height: 2em;
}
.showContent {
line-height: 1em;
height: auto;
}
.showContent{
height: auto;
}
h1 {
font-size: 24px;
}
p {
padding: 10px 0;
}
.show-more {
padding: 10px 0;
text-align: center;
}
​
It was exactly what I was looking for, but as you can see here, if you modify it (link), the "Show more" link is there if you have only one or two lines, and it is not needed in that case.
Thank you for your answers!

As your sample code was not fully working I decided to enhance one of my own samples I created in a post a while ago.
DEMO - Show more/less and hide the link when not needed
The demo shows the first text to have no link and the second to have a link. If you add a few more characters to the first text you see the link appear when you run the fiddle again.
The idea is to double check the client vs the actual height and determine then if you want to show the link. Similar to the below.
$(".show-more a").each(function() {
var $link = $(this);
var $content = $link.parent().prev("div.text-content");
console.log($link);
var visibleHeight = $content[0].clientHeight;
var actualHide = $content[0].scrollHeight - 1; // -1 is needed in this example or you get a 1-line offset.
console.log(actualHide);
console.log(visibleHeight);
if (actualHide > visibleHeight) {
$link.show();
} else {
$link.hide();
}
});
The demo is using the following HTML:
<div class="text-container">
<h1>Lorem ipsum dolor</h1>
<div class="text-content short-text">
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut
labore Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt
</div>
<div class="show-more">
Show more
</div>
</div>
<div class="text-container">
<h1>Lorem ipsum dolor</h1>
<div class="text-content short-text">
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.
At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.
</div>
<div class="show-more">
Show more
</div>
</div>​
and the following basic CSS:
div.text-container {
margin: 0 auto;
width: 75%;
}
.text-content{
line-height: 1em;
}
.short-text {
overflow: hidden;
height: 2em;
}
.full-text{
height: auto;
}
h1 {
font-size: 24px;
}
.show-more {
padding: 10px 0;
text-align: center;
}
​

See the working fiddle here - http://jsfiddle.net/tariqulazam/hpeyH/
First you have to measure if the content has overflowed or not. I have used the solution from detect elements overflow using jquery.
Finally use this plugin to decide whether to show or hide the 'show more' link.
$("div.content").HasScrollBar() ==true ? $(".show-more").show():$(".show-more").hide();

I don't know whats your real question is, but I suppose you want to deactive the show more link, if the text is only 1 or 2 lines and active it if the text has more than 2 lines.
For this purpose you have to check if the div with the text is bigger than you threshold (2 lines). In my solution I use the height() function which give you the height in pixel. In the original example the link text is not visible if the height is more than 2em.
You better should use also pixel for that or use a tool to convert the units.
Here are my addition lines for a solution with a threshold of 1 line:
var text = $('.text-container');
if (text.height() <= 20) {
$('.show-more').hide();
}
http://jsfiddle.net/JRDzf/

if( $('.text-container').html().indexOf("<br") >= 0 ) {
$(".show-more").hide()
}