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fullstackNRJfullstackNRJ
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day 30 🥳
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‎each day build day!/Day 30/README.md

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# Click and Drag n Scroll
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The idea is inspired from a website which lets you scroll horizontally using click and drag.
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I tried implementing it using javascript and css. It's functional yet buggy.
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# Challenges
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- scroll Positions
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- PageOffset, offsetLeft
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-

‎each day build day!/Day 30/index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Drag and scroll </title>
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<link rel="stylesheet" href="style.css">
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</head>
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<body>
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<div class="items">
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<div class="item item1">01</div>
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<div class="item item2">02</div>
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<div class="item item3">03</div>
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<div class="item item4">04</div>
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<div class="item item5">05</div>
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<div class="item item6">06</div>
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<div class="item item7">07</div>
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<div class="item item8">08</div>
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<div class="item item9">09</div>
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<div class="item item10">10</div>
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<div class="item item11">11</div>
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<div class="item item12">12</div>
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<div class="item item13">13</div>
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<div class="item item14">14</div>
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<div class="item item15">15</div>
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<div class="item item16">16</div>
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<div class="item item17">17</div>
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<div class="item item18">18</div>
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<div class="item item19">19</div>
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<div class="item item20">20</div>
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<div class="item item21">21</div>
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<div class="item item22">22</div>
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<div class="item item23">23</div>
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<div class="item item24">24</div>
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<div class="item item25">25</div>
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</div>
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<script src="main.js"></script>
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</body>
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</html>

‎each day build day!/Day 30/main.js

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/* steps : 1. get the hold of divs,
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2. get the click position
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3. get the scrollLeft value
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4. capture the difference between scrollLeft and clickX
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5. move the div to left by value equals the difference
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*/
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const scrollArea = document.querySelector('.items')
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let mouseClicked = false;
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let startX;
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let scrollLeft;
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scrollArea.addEventListener('mousedown', (e)=>{
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mouseClicked = true;
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scrollArea.classList.add('active')
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//get the scroll value
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startX = e.pageX - scrollArea.offsetLeft //by how much it has scrolled
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scrollLeft = scrollArea.offsetLeft;
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console.log(startX,scrollLeft)
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})
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scrollArea.addEventListener('mouseup', ()=>{
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mouseClicked = false;
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scrollArea.classList.remove('active')
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})
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scrollArea.addEventListener('mouseleave', ()=>{
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mouseClicked = false;
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scrollArea.classList.remove('active')
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})
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scrollArea.addEventListener('mousemove', (e)=>{
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if(!mouseClicked) return;
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e.preventDefault()
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//cuurent position after mousemove
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const currentPosX = e.pageX - scrollArea.offsetLeft
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scrollAmount = (currentPosX - startX ) * 2
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//finally the update the div's position either to right or left
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scrollArea.scrollLeft = scrollLeft - scrollAmount ;//Initial scrollArea.scrollLeft //(scrolled factor) to avoid jumpy animation
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})
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‎each day build day!/Day 30/style.css

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html {
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box-sizing: border-box;
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background: rgb(52, 61, 65);
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background-size: cover;
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}
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*, *:before, *:after {
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box-sizing: inherit;
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}
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body {
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min-height: 100vh;
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display: flex;
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justify-content: center;
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align-items: center;
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font-family: sans-serif;
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font-size: 20px;
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margin: 0;
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}
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.items {
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height: 600px;
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padding: 100px;
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width: 100%;
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border: 1px solid white;
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overflow-x: scroll;
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overflow-y: hidden;
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white-space: nowrap;
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user-select: none;
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cursor: pointer;
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transition: all 0.2s;
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transform: scale(0.98);
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will-change: transform;
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position: relative;
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background: rgba(255,255,255,0.1);
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font-size: 0;
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perspective: 500px;
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}
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.items.active {
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background: rgba(255,255,255,0.3);
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cursor: grabbing;
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cursor: -webkit-grabbing;
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transform: scale(1);
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}
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.item {
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width: 200px;
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height: calc(100% - 40px);
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display: inline-flex;
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align-items: center;
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justify-content: center;
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font-size: 80px;
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font-weight: 100;
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color: rgba(0,0,0,0.15);
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box-shadow: inset 0 0 0 10px rgba(0,0,0,0.15);
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}
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.item:nth-child(9n+1) { background: dodgerblue;}
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.item:nth-child(9n+2) { background: goldenrod;}
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.item:nth-child(9n+3) { background: paleturquoise;}
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.item:nth-child(9n+4) { background: gold;}
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.item:nth-child(9n+5) { background: cadetblue;}
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.item:nth-child(9n+6) { background: tomato;}
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.item:nth-child(9n+7) { background: lightcoral;}
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.item:nth-child(9n+8) { background: darkslateblue;}
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.item:nth-child(9n+9) { background: rebeccapurple;}
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.item:nth-child(even) { transform: scaleX(1.31) rotateY(40deg); }
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.item:nth-child(odd) { transform: scaleX(1.31) rotateY(-40deg); }
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