Monday, 17 June 2019

Basic Animation with javascript

Category : Javascript
Buat animasi mengunakan javascript? apa mungkin? sulit sih.. soalnya klo yang tahu bahasa c
di sana kan klo mo buat animasi harus pake delay (perintah untuk menunda program beberapa saat) tapi di javascript ga ada perintah delay tuh.. adanya perintah yang laen yaitu setTimeout(callback_function,delay_time). klo pernah mengunakan open gl pasti ga asing cara pengunaannya. function ini di gunakan secara rekursif.
langsung saja, cara pake sederhananya :

<script>
function coba_settimeout()
{
    alert('ini adalah coba');
    setTimeout('coba_settimeout',5000);
    // artinya kita akan memangil function coba_settimeout 5 detik sekali
}
// pemangilan function awal
coba_settimeout();
</script>

nah itu cara pake dari settimeout, bisa di pake untuk macam2 sih, misalnya yang pernah saya gunakan untuk hal dalam memberikan waktu user untuk log out, jadi dalam 5 menit klo user tidak melakukan aksi apa pun di web kita, kita memberikan alert bahwa sesi anda telah habis.

aku punya contoh program bola pantul yang di buat mengunakan javascipt, konsepnya berbeda dengan kita membuat bola pantul di bahasa c. bisa lihat di sini
dan 1 hal yang perlu di inget, javascript jalannya bukan line perline. artinya dia tidak menungu function yang satu selesai baru melakukan function selanjutnya.

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3 Comment | 3706 hits | Posted by Callrid at 2007-10-26 09:37:50

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