JS animatsiyalari
JavaScript yordamida animatsiyalar yaratishni o‘rganing.
Oddiy veb-sahifa
JavaScript yordamida HTML animatsiyalarini qanday yaratishni ko‘rsatish uchun oddiy veb-sahifadan foydalanishimiz mumkin.
Misol
<!DOCTYPE html>
<html>
<body>
<h1>My First JavaScript Animation</h1>
<div id ="myContainer">
<div id ="myAnimation">My animation will go here</div>
</div>
</body>
<html>
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Elementlarni bezash
Animatsiya ishlashi uchun animatsiyalanadigan element "ota konteyner"ga (parent container) nisbatan harakatlanishi kerak.
Konteyner element style = "position: relative" bilan yaratilishi kerak.
Animatsiya elementi style = "position: absolute" bilan yaratilishi kerak.
Misol
#myContainer {
width: 400px;
height: 400px;
position: relative;
background: yellow;
}
#myAnimation {
width: 50px;
height: 50px;
position: absolute;
background: red;
}
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Animatsiya kodi
JavaScript animatsiyalari element stilidagi bosqichma-bosqich o‘zgarishlarni dasturlash orqali amalga oshiriladi.
O‘zgarishlar taymer orqali chaqiriladi. Taymer intervali kichik bo‘lsa, animatsiya uzluksiz ko‘rinadi.
Asosiy kod:
Misol
var id = setInterval(frame, 5);
function frame() {
if (/* test for finished */) {
clearInterval(id);
} else {
/* code to change the element style */
}
}
JavaScript yordamida animatsiya yaratish
Misol
var id = null;
function myMove() {
var elem = document.getElementById("myAnimation");
var pos = 0;
clearInterval(id);
id = setInterval(frame, 10);
function frame() {
if (pos == 350) {
clearInterval(id);
} else {
pos++;
elem.style.top = pos + 'px';
elem.style.left = pos + 'px';
}
}
}
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