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Apa Itu JavaScript

JavaScript merupakan bahasa pemrograman client side yang wajib dimengerti oleh pengembangan web. JavaScript membuat website yang Anda buat menjadi lebih interaktif. JavaScript membuat website seakan-akan berinteraksi langsung dengan pengguna website.

JavaScript merupakan bahasa pemrograman yang berjalan di client-slide, yaitu perangkat lunak browser. Hampir semua peranglak lunak browser saat ini mendukung JavaScript, seperti Internet Explorer, Mozila FireFox, Google Chrome, Opera dan lain-lain



Berikut adalah keungulan dari JavaScript 

  1. Ukuran file kecil karena Script dari javascript memiliki ukuran yang kecil sehingga ketika web yang memiliki javascript ditampilkan di browser maka akses tampilannya akan lebih cepat dibandingkan ketika browser membuka suatu web yang memiliki script java. Hal ini juga sangat berkepentingan dengan daya kerja server. Semakin kecil space suatu web yang disimpan dalam suatu server maka daya kerja server ketika di browsing oleh user di internet akan tidak terlalu berat, selain itu sifat javascript client side yang tidak perlu lagi di olah oleh server ketika browser memanggil web dari sebuah server. 
  2. Mudah untuk dipelajari karena Javascript merupakan bahasa semi pemograman yang merupakan gabungan antara bahasa pemograman java dengan bahasa kode HTML sehingga disebut bahasa hybrid. Walaupun javascript merupakan turunan dari java namun javascript tidak memiliki aturan yang serumit java.
  3. Terbuka karena Javascript tidak terikat oleh hardware maupun software tertentu bahkan system operasi seperti windows maupun unix. Karena ia bersifat terbuka, maka ia dapat dibuat maupun di baca di semua jenis komputer.


Berikut adalah kekurangan dari JavaScript
Penggunaan JavaScirpt dapat dicopy langsung melalui web browser, sehingga setiap orang dapat menggunakan program JavaScript yang telah anda kita buat.


Ciri-ciri JavaScript
1. Extension file berupa “.js” contoh : “app.js”
2. Case sensitive
3. Tiap akhir perintah diakhiri dengan tanda “;”
4. Diawali dengan tanda 

“<script type=’text/javascript’>’” atau “<script>” dan diakhiri dengan tanda “</script>”

5. Saling berkaitan dengan script HTML


sumber : ebook Bimboo
oleh Zaini Jam’athsani
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