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>
Related
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>
I'm trying to replicate a input horizontal scroll on a div element, so whenever the user move along the input the div element scrolls exactly the same as the input.
My problem is with Chrome as it seems the input has a different scroll behavior, causing the scrollLeft value to be different in both elements. In Firefox it works as expected.
Is there any way to achieve this in Chrome without using jQuery or other libraries? or am I asking the impossible?
var theTextDiv = document.getElementById("the-text");
var theText = document.getElementById("the-text-input");
function keepScroll(txt) {
theTextDiv.scrollLeft = theText.scrollLeft;
}
theText.addEventListener("blur", function() { keepScroll("blur"); });
theText.addEventListener("change", function() { keepScroll("change"); });
theText.addEventListener("focus", function() { keepScroll("focus"); });
theText.addEventListener("input", function() { keepScroll("input"); });
theText.addEventListener("keydown", function() { keepScroll("keydown"); });
theText.addEventListener("keyup", function() { keepScroll("keyup"); });
theText.addEventListener("scroll", function() { keepScroll("scroll"); });
theText.addEventListener("select", function() { keepScroll("select"); });
#the-text {
border: 1px solid red;
max-width: 98px;
font-size: 14px;
overflow-x: scroll;
word-wrap: break-word;
white-space: nowrap;
font-family: "Times New Roman", Times, serif;
padding: 1px;
margin-right: 10px;
}
#the-text-input {
border: 1px solid red;
width: 100px;
font-size: 14px;
font-family: "Times New Roman", Times, serif;
}
<div id="the-text">
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
</div>
<input type="text" id="the-text-input" value="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua." />
EDIT:
I tried the above code on Chrome 77 on a Mac and it works as expected, there's no gap between both elements, and I'm starting to think this is a Windows problem rather than a Chrome problem
EDIT(2):
After restarting my PC all work as expected (seriously) maybe some chrome cache was causing to have a weird behavior
This probably has to do with paddings and borders on the input and/or the div, and as it looks like it's working fine in Chrome 77, you either forgot to add some code in the example you posted or the default styles for those elements are also playing a role here.
In any case, my suggestion would be to remove margins, paddings and borders from both elements and adding a wrapping div with those instead (red example).
You can also use box-sizing: border-box, keep those styles and avoid the wrapper, but padding behaves differently in an input, as content in the padding area is not visible (blue example).
Lastly, your code to update the scroll was not working properly on blur, as when the event fires the scroll on the input hasn't been reset to 0 yet. Wrapping it with setTimeout or window.requestAnimationFrame solves the issue. Additionally, the latter will also make the update much smoother and in-sync.
const text = document.getElementById('text');
const input = document.getElementById('input');
function updateScroll() {
// Scroll not updated on blur without requestAnimationFrame
// or setTimeout:
requestAnimationFrame(() => text.scrollLeft = input.scrollLeft);
}
input.addEventListener('blur', updateScroll);
input.addEventListener('change', updateScroll);
input.addEventListener('focus', updateScroll);
input.addEventListener('input', updateScroll);
input.addEventListener('keydown', updateScroll);
input.addEventListener('keyup', updateScroll);
input.addEventListener('scroll', updateScroll);
input.addEventListener('select', updateScroll);
const textAlternative = document.getElementById('text-alternative');
const inputAlternative = document.getElementById('input-alternative');
function updateScrollAlternative() {
// Scroll not updated on blur without requestAnimationFrame
// or setTimeout:
requestAnimationFrame(() => textAlternative.scrollLeft = inputAlternative.scrollLeft);
}
inputAlternative.addEventListener('blur', updateScrollAlternative);
inputAlternative.addEventListener('change', updateScrollAlternative);
inputAlternative.addEventListener('focus', updateScrollAlternative);
inputAlternative.addEventListener('input', updateScrollAlternative);
inputAlternative.addEventListener('keydown', updateScrollAlternative);
inputAlternative.addEventListener('keyup', updateScrollAlternative);
inputAlternative.addEventListener('scroll', updateScrollAlternative);
inputAlternative.addEventListener('select', updateScrollAlternative);
body {
margin: 0;
}
.box {
position: relative;
display: block;
width: 50%;
box-sizing: border-box;
/* Moved styles here: */
border: 3px solid red;
padding: 8px;
margin: 8px auto 0;
}
#text,
#input,
#text-alternative,
#input-alternative {
display: block;
width: 100%;
font-size: 14px;
font-family: monospace;
outline: none;
}
#text,
#input {
/* Removed margin, padding and borders: */
border: 0;
padding: 0;
margin: 0;
}
#text-alternative,
#input-alternative {
width: 50%;
box-sizing: border-box;
/* Keep styles here thanks to box-sizing, but behaves differently: */
border: 3px solid blue;
padding: 8px;
margin: 8px auto 0;
}
#text,
#text-alternative {
word-wrap: break-word;
white-space: nowrap;
/* No need to keep it visible unless you want to scroll manually too: */
overflow-x: hidden;
}
<div class="box">
<div id="text">
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
</div>
</div>
<label class="box">
<input id="input" value="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua." />
</label>
<div id="text-alternative">
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
</div>
<input id="input-alternative" value="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua." />
I'm currently working on an image slider for my company's new homepage and just can't figure out the error that seems to lie in the javascript part ..
The slider contains 4 images and should, as soon as the last image is reached, begin at the first image again. The problem is that the images are displayed in that order "1-2-1-2-3-4-1-2-3-4..."
Here the code:
$('.slide').first().addClass('active');
$('.slide').hide();
$('.active').show();
$('#next').on('click', nextSlide);
$('#prev').on('click', prevSlide);
// Auto slider
if (options.autoswitch === true) {
setInterval(nextSlide, options.autoswitch_speed);
}
function nextSlide() {
$('.active').removeClass('active').addClass('prevActive');
if ($('.prevActive').is(':last-child')) {
$('.slide').first().addClass('active');
} else {
$('.prevActive').next().addClass('active');
}
$('.prevActive').removeClass('prevActive');
$('.slide').fadeOut(options.speed);
$('.active').fadeIn(options.speed);
}
function prevSlide() {
$('.active').removeClass('active').addClass('prevActive');
if ($('.prevActive').is(':first-child')) {
$('.slide').last().addClass('active');
} else {
$('.prevActive').prev().addClass('active');
}
$('.prevActive').removeClass('prevActive');
$('.slide').fadeOut(options.speed);
$('.active').fadeIn(options.speed);
}
});
and the corresponding CSS:
#slider-container {
height: 600px;
margin: 0 auto;
max-width: 100%;
overflow: hidden;
position: relative;
width: 800px;
}
#sldier {
height: 100%;
width: 100%;
}
#slider .slide img {
height: 100%;
width: auto;
}
#prev, #next {
cursor: pointer;
max-width: 30px;
opacity: 1;
position: absolute;
top: 8%;
-webkit-transition: opacity 0.2s linear;
-moz-transition: opacity 0.2s linear;
-o-transition: opacity 0.2s linear;
transition: opacity 0.2s linear;
z-index: 999;
}
#prev { left: 12px; }
#next { right: 3px; }
#slider-container:hover #prev, #slider-container:hover #next { opacity: .7; }
.slide {
position: absolute;
width: 100%;
}
.slide-copy {
background: #777;
background: rgba(0, 0, 0, .5);
bottom: 0;
color: #fff;
left: 0;
padding: 20px;
position: absolute;
}
#media (min-width: 600px) {
#prev, #next {
top: 45%;
}
}
and the HTML
<div id="slider-container">
<img src="img/arrowprev" id="prev" alt="prev">
<ul id="slider">
<li class="slide">
<div class="slide-copy">
<h2>Placeholder</h2>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat.</p>
</div>
<img src="img/placeholder" alt="placeholder">
</li>
<li class="slide">
<div class="slide-copy">
<h2>Placeholder2</h2>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat.</p>
</div>
<img src="img/placeholder" alt="placeholder">
</li>
<li class="slide">
<div class="slide-copy">
<h2>Placeholder3</h2>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat.</p>
</div>
<img src="img/placeholder" alt="placeholder">
</li>
<li class="slide">
<div class="slide-copy">
<h2>Placeholder4</h2>
<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat.</p>
</div>
<img src="img/placeholder" alt="placeholder">
</li>
</ul>
<img src="img/arrownext" id="next" alt="next">
</div>
Maybe it has something to do with
if ($('.prevActive').is(':first-child')) {
$('.slide').last().addClass('active');
I just can't figure out the problem and would appreciate any help.
Thank you in advance :)
This is the page I took as source:
https://www.jqueryscript.net/slider/Tiny-jQuery-Image-Slider-Slideshow-With-Caption-Support.html
I found the fail, the unique thing it wasn't working, is the apply of visibility on each prevActive and active elements on each next/prev actions, so I've added this lines to both functions:
$('.prevActive').hide();
$('.active').show();
(Also I've commented the lines referencing to options variable, as is not defined in the description).
You can see the fiddle working here:
https://jsfiddle.net/a4bssrf5/8/
I have 3 identical divs and I want to add a class to one of those divs every 5 seconds one a rotating carousel type thing.
The following JSFiddle is what I have atm and I want the :hover styles to to be added to one of those divs every 5 seconds in a rotating sequence but still work as an on hover; JSFiddle
.action {
padding: 10px 50px 10px 10px;
background-color: #eaeaea;
color: #525454;
}
.action:hover {
background-color: #b5b5b5;
color: #000;
}
.action h3 {
margin: 0 0 10px 0;
}
.action .corner {
position: absolute;
width: 0;
height: 0;
border-bottom: 50px solid #db7575;
border-left: 50px solid transparent;
bottom: 0;
right: 0;
}
.action:hover .corner {
border-bottom: 50px solid #CC0000;
}
.action i {
position: absolute;
margin-left: -20px;
margin-top: 27px;
color: #fff;
}
<div class="row">
<a href="#">
<div class="col-md-4 action">
<h3> Title 1 </h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.</p> <span class="corner "><i class="fa fa-arrow-right"></i></span>
</div>
</a>
<a href="#">
<div class="col-md-4 action">
<h3> Title 2 </h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.</p> <span class="corner "><i class="fa fa-arrow-right"></i></span>
</div>
</a>
<a href="#">
<div class="col-md-4 action">
<h3> Title 3 </h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.</p> <span class="corner "><i class="fa fa-arrow-right"></i></span>
</div>
</a>
</div>
Something like this ?
http://jsfiddle.net/15od56d3/
CSS
.action:hover,.my_turn { background-color: #b5b5b5; color: #000;}
Javascript
var myTurn = 0;
setInterval(function(){
var i = 0;
$(".action").each(function(){
if(i==myTurn)
$(this).addClass("my_turn");
else
$(this).removeClass("my_turn");
i++;
});
myTurn = (myTurn + 1)%3 ;
},5000);
What I don't get in the accepted answer is that the carousel doesn't pause when the mouse hovers over an item. This is very confusing, especially since the same style is applied. I would create a jQuery object of the rows and use the available jQuery functions to walk over/select them and apply the a class for the hover instead of using the css property.
See the JSFiddle for a demo
var $rows = $('.action');
var $start= $rows.first(); // select one to start with (can be any of the elements in the set)
var $current = $start;
var interval;
var hover = function() {
$current.removeClass('hover');
$current = $rows.eq($rows.index($current)+1);
if (!$current.length) {
$current = $rows.eq($rows.index($start));
}
$current.addClass('hover');
};
The carousel should keep the expected direction and move on from where the hover-style was last applied; from the hovered element (as this is the most natural behavior imho):
$('.action').mouseover(function() {
window.clearInterval(interval);
$current.removeClass('hover');
$current = $(this).addClass('hover');
}).mouseout(function() {
interval = window.setInterval(hover, 2000);
});
$start.addClass('hover').mouseout(); // apply the class immediately to the first row
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()
}