2020/02/21

Cara Membuat Efek Salju Turun Di Blog atau Situs Web


Cara Membuat Efek Salju Turun Di Blog atau Situs Web - Hallo sobat Blogger semua, setelah sebelumnya saya membagikan tutorial tentang Cara Membuat Efek Salju Turun Dengan CSS3, pada kesempatan ini saya akan membagikan artikel tentang cara Membuat Efek Salju turun di Blog dengan Versi lain.

Untuk cara memasangnya, sobat bisa mengikuti tutorial di bawah ini.

Petunjuk Cara Membuat Efek Salju Turun Di Blog atau Situs Web
1.Untuk menambah Efek salju, Cari tag <body> dan tempelkan kode dibawah ini sesudah tag tersebut. Atau bisa ditaruh sebelum/di atasnya tag </body>


<style>
#snowflakeContainer {
position: absolute;
left: 0px;
top: 0px;
}
.snowflake {
padding-left: 15px;
font-family: Cambria, Georgia, serif;
font-size: 14px;
line-height: 24px;
position: fixed;
color: #FFFFFF;
user-select: none;
z-index: 1000;
-moz-user-select: none;
-ms-user-select: none;
-khtml-user-select: none;
-webkit-user-select: none;
-webkit-touch-callout: none;
}
.snowflake:hover {
cursor: default;
}
</style>
<div id='snowflakeContainer'>
<p class='snowflake'>*</p>
</div>
<script>// The star of every good animation
var requestAnimationFrame = window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.msRequestAnimationFrame;
var transforms = [&quot;transform&quot;,
&quot;msTransform&quot;, 
&quot;webkitTransform&quot;,
&quot;mozTransform&quot;, 
&quot;oTransform&quot;];
var transformProperty = getSupportedPropertyName(transforms);
// Array to store our Snowflake objects
var snowflakes = [];
// Global variables to store our browser&#39;s window size
var browserWidth;
var browserHeight;
// Specify the number of snowflakes you want visible
var numberOfSnowflakes = 50;
// Flag to reset the position of the snowflakes
var resetPosition = false;
//
// It all starts here...
//
function setup() {
window.addEventListener(&quot;DOMContentLoaded&quot;, generateSnowflakes, false);
window.addEventListener(&quot;resize&quot;, setResetFlag, false);
}
setup();
//
// Vendor prefix management
//
function getSupportedPropertyName(properties) {
for (var i = 0; i &lt; properties.length; i++) {
if (typeof document.body.style[properties[i]] != &quot;undefined&quot;) {
return properties[i];
}
}
return null;
}
//
// Constructor for our Snowflake object
//
function Snowflake(element, radius, speed, xPos, yPos) {
// set initial snowflake properties
this.element = element;
this.radius = radius;
this.speed = speed;
this.xPos = xPos;
this.yPos = yPos;
// declare variables used for snowflake&#39;s motion
this.counter = 0;
this.sign = Math.random() &lt; 0.5 ? 1 : -1;
// setting an initial opacity and size for our snowflake
this.element.style.opacity = .1 + Math.random();
this.element.style.fontSize = 12 + Math.random() * 50 + &quot;px&quot;;
}
//
// The function responsible for actually moving our snowflake
//
Snowflake.prototype.update = function () {
// using some trigonometry to determine our x and y position
this.counter += this.speed / 5000;
this.xPos += this.sign * this.speed * Math.cos(this.counter) / 40;
this.yPos += Math.sin(this.counter) / 40 + this.speed / 30;
// setting our snowflake&#39;s position
setTranslate3DTransform(this.element, Math.round(this.xPos), Math.round(this.yPos));
// if snowflake goes below the browser window, move it back to the top
if (this.yPos &gt; browserHeight) {
this.yPos = -50;
}
}
//
// A performant way to set your snowflake&#39;s position
//
function setTranslate3DTransform(element, xPosition, yPosition) {
var val = &quot;translate3d(&quot; + xPosition + &quot;px, &quot; + yPosition + &quot;px&quot; + &quot;, 0)&quot;;
element.style[transformProperty] = val;
}
//
// The function responsible for creating the snowflake
//
function generateSnowflakes() {
// get our snowflake element from the DOM and store it
var originalSnowflake = document.querySelector(&quot;.snowflake&quot;);
// access our snowflake element&#39;s parent container
var snowflakeContainer = originalSnowflake.parentNode;
// get our browser&#39;s size
browserWidth = document.documentElement.clientWidth;
browserHeight = document.documentElement.clientHeight;
// create each individual snowflake
for (var i = 0; i &lt; numberOfSnowflakes; i++) {
// clone our original snowflake and add it to snowflakeContainer
var snowflakeCopy = originalSnowflake.cloneNode(true);
snowflakeContainer.appendChild(snowflakeCopy);
// set our snowflake&#39;s initial position and related properties
var initialXPos = getPosition(50, browserWidth);
var initialYPos = getPosition(50, browserHeight);
var speed = 5+Math.random()*40;
var radius = 4+Math.random()*10;
// create our Snowflake object
var snowflakeObject = new Snowflake(snowflakeCopy,
radius, 
speed,
initialXPos, 
initialYPos);
snowflakes.push(snowflakeObject);
}
// remove the original snowflake because we no longer need it visible
snowflakeContainer.removeChild(originalSnowflake);
// call the moveSnowflakes function every 30 milliseconds
moveSnowflakes();
}
//
// Responsible for moving each snowflake by calling its update function
//
function moveSnowflakes() {
for (var i = 0; i &lt; snowflakes.length; i++) {
var snowflake = snowflakes[i];
snowflake.update();
}
// Reset the position of all the snowflakes to a new value
if (resetPosition) {
browserWidth = document.documentElement.clientWidth;
browserHeight = document.documentElement.clientHeight;
for (var i = 0; i &lt; snowflakes.length; i++) {
var snowflake = snowflakes[i];
snowflake.xPos = getPosition(50, browserWidth);
snowflake.yPos = getPosition(50, browserHeight);
}
resetPosition = false;
}
requestAnimationFrame(moveSnowflakes);
}
//
// This function returns a number between (maximum - offset) and (maximum + offset)
//
function getPosition(offset, size) {
return Math.round(-1*offset + Math.random() * (size+2*offset));
}
//
// Trigger a reset of all the snowflakes&#39; positions
//
function setResetFlag(e) {
resetPosition = true;
}</script>

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