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The Beauty & Power Of JavaScript: "Hello World" Code As A Case Study - Programming - Nairaland

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The Beauty & Power Of JavaScript: "Hello World" Code As A Case Study by Olumyco(m): 9:38pm On Jan 30, 2016
JavaScript is beautiful and powerful. It's fun coding with it.
Can you imagine that the popular example of print/output "Hello World" code
can be done in JavaScript in different ways and styles.

Check it out!

// JAVASCRIPT WITH CONSOLE

console.log("Hello World"wink;

console.info("Hello World"wink;


// JAVASCRIPT WITH DOM - DOCUMENT OBJECT MODEL (HTML DOCUMENT)

.................................................
<!DOCTYPE html>
<html>
...... // add others tags
<body>
<p name="p" id="p" class="p"></p>
</body>
</html>
.................................................

document.write("Hello World"wink;

document.body.innerHTML = "Hello World";

document.getElementsByTagName("p"wink[0].innerHTML = "Hello World";

document.getElementsByName("p"wink[0].innerHTML = "Hello World";

document.getElementById("p"wink.innerHTML = "Hello World";

document.querySelector("#p"wink.innerHTML = "Hello World";

document.querySelector(".p"wink.innerHTML = "Hello World";


// JAVASCRIPT WITH BOM - BROWSER OBJECT MODEL (BROWSER WINDOW)

window.alert("Hello World"wink;

// Or: can be written with or without the window object.

alert.("Hello World"wink;


//JAVASCRIPT ITSELF

function output(anything) {
return anything;
}
output("Hello World"wink;


function print() {
return "Hello World";
}
print();


Wao! 12 different ways. Minus the "OR alert" optional code......

JavaScript Rocks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2 Likes

Re: The Beauty & Power Of JavaScript: "Hello World" Code As A Case Study by Everest25(m): 6:25pm On Jan 31, 2016
please can some one explain these html tags for me coz am a beginner <class>, <div>,<span>...thanks

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