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JavaScript

JavaScript is a high-level programming language that follows the ECMAScript standard. Originally designed as a scripting language for websites, it has evolved into a widely adopted general-purpose programming language and is currently the most popular programming language in use. JavaScript is usually found running in a web browser as interactive or automated content, ranging from popup messages and live clocks to large web applications. It is also commonly used in server-side programming through platforms like Node.js, or “embedded” in non-JavaScript applications where the base programming language lacks the high-level functionality that JavaScript offers.

Despite the similarities in name and syntax, JavaScript is not related to the programming language Java. Though the names of both languages are trademarks of Oracle Corporation, the two languages follow different design principles and are actively developed by unrelated organizations.

Use:

JavaScript is typically inserted into HTML when used on the web, either directly in the file within an HTML tag or linked to a separate file containing the script.

As a full-featured scripting language, JavaScript can provide functionality to a website. Examples include:

  • Using AJAX to load content without refreshing the website.
  • Changing HTML through the Document Object Model (DOM).
  • Modifying CSS.
  • Validating form inputs and sending them.
  • Tracking users as they navigate the website.

 

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Hardest Things in Programming

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me, that it might be the mirror of my soul, as my soul is the mirror of the infinite God!

O my friend — but it is too much for my strength — I sink under the weight of the splendor of these visions! A wonderful serenity has taken possession of my entire soul, like these sweet mornings of spring which I enjoy with my whole heart. I am alone, and feel the charm of existence in this spot, which was created for the bliss of souls like mine.

I am so happy, my dear friend, so absorbed in the exquisite sense of mere tranquil existence, that I neglect my talents. I should be incapable of drawing a single stroke at the present moment; and yet I feel that I never was a greater artist than now.

When, while the lovely valley teems with vapor around me, and the meridian sun strikes the upper surface of the impenetrable foliage of my trees, and but a few stray gleams steal into the inner sanctuary, I throw myself down among the tall grass by the trickling stream; and, as I lie close to the earth, a thousand unknown plants are noticed by me: when I hear the buzz of the little world among the stalks, and grow familiar with the countless indescribable forms of the insects and flies, then I feel the presence of the Almighty, who formed us in his own image, and the breath of that universal love which bears and sustains us, as it floats around us in an eternity of bliss; and then, my friend, when darkness overspreads my eyes, and heaven and earth seem to dwell in my soul and absorb its power, like the form of a beloved mistress, then I often think with longing, Oh, would I could describe these conceptions, could impress upon paper all that is living so full and warm within me.