I need to create a paragraph that will display "Show more option" if the content exceeds 3 lines. When clicked, it will expand the paragraph and show a "Show less" option. Clicking on "Show less" will collapse the paragraph. This functionality must be implemented using only Bootstrap without any jQuery or JavaScript.
If you want to achieve the effect using javascript and jquery, you can follow these steps:
$("document").ready(function(){
// find elements
var banner = $("#banner-message")
var button = $("button")
// when first load the window
if($('.option').length>3){
$('.option').each(function(index){
var option=$(this);
if(index>2){
option.toggleClass('hidden');
}
})
}
// handle click and add class
button.on("click", function(){
if($('.option').length>3){
$('.option').each(function(index){
var option=$(this);
if(index>2){
option.toggleClass('hidden');
}
});
}
});
});body {
background: #20262E;
padding: 20px;
font-family: Helvetica;
}
#banner-message {
background: #fff;
border-radius: 4px;
padding: 20px;
font-size: 25px;
text-align: center;
transition: all 0.2s;
margin: 0 auto;
width: 300px;
}
button {
background: #0084ff;
border: none;
border-radius: 5px;
padding: 8px 14px;
font-size: 15px;
color: #fff;
}
#banner-message.alt {
background: #0084ff;
color: #fff;
margin-top: 40px;
width: 200px;
}
#banner-message.alt button {
background: #fff;
color: #000;
}
.hidden {
display: none;
}
body {
background: #20262E;
padding: 20px;
font-family: Helvetica;
}
#banner-message {
background: #fff;
border-radius: 4px;
padding: 20px;
font-size: 25px;
text-align: center;
transition: all 0.2s;
margin: 0 auto;
width: 300px;
}
button {
background: #0084ff;
border: none;
border-radius: 5px;
padding: 8px 14px;
font-size: 15px;
color: #fff;
}
#banner-message.alt {
background: #0084ff;
color: #fff;
margin-top: 40px;
width: 200px;
}
#banner-message.alt button {
background: #fff;
color: #000;
}
.hidden {
display: none;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<div id="banner-message">
<div class='option'> option1</div>
<div class='option'> option2</div>
<div class='option'> option3</div>
<div class='option'> option4</div>
<button>Change color</button>
</div>
</body>
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