#javascriptprojects

HTML and CSS Projects with Source Code | JavaScript Quote Generator

Build a powerful HTML, CSS, and JavaScript Quote Generator step by step in this complete beginner-to-intermediate frontend tutorial.

In this project, you’ll learn how to create a random quote generator using API, handle async await in JavaScript, design a modern UI, and structure a real frontend project with source code.

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By the end of this video, you’ll have a fully working quote generator app and a clear understanding of API fetching, JavaScript async/await, DOM manipulation, and modern UI design—skills every frontend developer must know.

💻 Perfect for: Beginner web developers, JavaScript learners, and anyone building real-world portfolio projects.

Template literals for string interpolation

JavaScript template literal syntax.

Template literals in JavaScript programs are enclosed by backticks (`), and programmers can manually insert variables or expressions inside ${}.

`Test, ${expression}!`

Basic string interpolation in JavaScript.

Instead of concatenating strings by applying the + operator in a JavaScript program, you can apply template literals to insert variables directly into a string data type variable.

Example of interpolation in JavaScript.

let programming = “Javascript”;

let price = 999;

let text = `Welcome, to ${programming} and course price is – ${price}`;

console.log(text);  // result is – Welcome, to Javascript and course price is – 999

Here, ${programming} and ${price} are two placeholder variables in the current program, which are replaced by the programming and price variable values ​​in the current program.

Expression interpolation in JavaScript.

Javascript programmers can manually insert any valid program expression inside ${} along with program variables. It contains program calculations, user-defined function calls, and many other features.

Example of expression interpolation in JavaScript.

let p = 1;

let q = 2;

let total = `${p} + ${q} = ${p + q}`;

console.log(total);  // result is – 1 + 2 = 3

In the above program, the program expression here contains the evaluated 3 results of ${p + q}, and the program result is previewed in the string.

Template literals for string interpolation In Hindi

JavaScript template literal syntax.

जावास्क्रिप्ट प्रोग्राम में टेम्पलेट लिटरल बैकटिक्स (`) के द्वारा एनक्लोसड होते हैं, और प्रोग्रामर ${} के अंदर वेरिएबल या एक्सप्रेशन को मैन्युअल इन्सर्ट कर सकते हैं।

`Test, ${expression}!`

Basic string interpolation in JavaScript.

जावास्क्रिप्ट प्रोग्राम में  + ऑपरेटर को अप्लाई करके स्ट्रिंग को संयोजित करने के बदले, आप स्ट्रिंग डाटा टाइप वेरिएबल में डायरेक्ट वेरिएबल को इन्सर्ट करने में टेम्प्लेट लिटरल को अप्लाई कर सकते हैं।

Example of interpolation in JavaScript.

let programming = “Javascript”;

let price = 999;

let text = `Welcome, to ${programming} and course price is – ${price}`;

console.log(text);  // result is – Welcome, to Javascript and course price is – 999

यहाँ, मौजूदा प्रोग्राम में ${programming} और ${price} में दो प्लेसहोल्डर वेरिएबल हैं, जिन्हें मौजूदा प्रोग्राम में प्रोग्रामिंग और प्राइस वेरिएबल वैल्यू से रिप्लेस कर दिया जाता है।

Expression interpolation in JavaScript.

जावास्क्रिप्ट प्रोग्रामर प्रोग्राम वेरिएबल के साथ ${} के अंदर कोई भी वैलिड प्रोग्राम एक्सप्रेशन को मैन्युअल इन्सर्ट कर सकते हैं। जिसमे प्रोग्राम कैलकुलेशन, यूजर डिफाइन फ़ंक्शन कॉल और अन्य कई फीचर्स मौजूद होते है।

Example of expression interpolation in JavaScript.

let p = 1;

let q = 2;

let total = `${p} + ${q} = ${p + q}`;

console.log(total);  // result is – 1 + 2 = 3

ऊपर दिए गए प्रोग्राम में, यहाँ प्रोग्राम एक्सप्रेशन में ${p + q} का एवलुएटेड 3 रिजल्ट होता है, और प्रोग्राम रिजल्ट स्ट्रिंग में प्रीव्यू होता है।

Converting between types (e.g., String(), Number(), Boolean())

Converting to String in JavaScript Programs, String() function.

In JavaScript programming the String() function converts the string data type value declared in a program to string order.

String function syntax.

String(value)

Example of String function in JavaScript.

let integer = 7894;

let str1 = String(integer);  // here it use to Converts integer 7894 to string “7894”

console.log(str1);  // result is – “7894”

console.log(typeof str1);  // result is – “string”

let boolvalue = false;

let boolStr2 = String(boolvalue);  // here it Converts boolean false to string “false”

console.log(boolStr2);  // result is – “false”

Converting between types (e.g., String(), Number(), Boolean()) In Hindi

Converting to String in JavaScript Programs, String() function.

जावास्क्रिप्ट प्रोग्रामिंग में स्ट्रिंग() फ़ंक्शन किसी प्रोग्राम में डिक्लेअर स्ट्रिंग डेटा टाइप वैल्यू को स्ट्रिंग आर्डर में कन्वर्ट करता है।

String function syntax.

String(value)

Example of String function in JavaScript.

let integer = 7894;

let str1 = String(integer);  // here it use to Converts integer 7894 to string “7894”

console.log(str1);  // result is – “7894”

console.log(typeof str1);  // result is – “string”

let boolvalue = false;

let boolStr2 = String(boolvalue);  // here it Converts boolean false to string “false”

console.log(boolStr2);  // result is – “false”

Coercion to String in JavaScript.

जब आप अपने जावास्क्रिप्ट प्रोग्राम में + ऑपरेटर का उपयोग किसी नॉन-स्ट्रिंग के रूप में अप्लाई करते हैं, तो जावास्क्रिप्ट प्रोग्राम में मौजूदा डेटा टाइप वैल्यू को इम्प्लिसित रूप से उस वैल्यू को स्ट्रिंग (ज़बरदस्ती) में कन्वर्ट कर देता है।

let cortesting = 1 + 1 + ” vcanhelpsu”;

console.log(cortesting);  // result is – “2 vcanhelpsu”  here 1 + 1 is evaluated first, then coerced into a string

Type coercion and type checking

Type Coercion in JavaScript.

Type coercion concept in JavaScript program is generally used for automatic or implicit conversion of one data type to another data type program variable type value. This concept is applied in JavaScript when programmers apply operations related to multiple data type values.

JavaScript forcibly applies implicit data types in many cases in programming, but there are times when explicit coercion or manual conversion is necessary.

Example of implicit coercion in a JavaScript program.

When you try to combine a string and a numeric using the + operator, JavaScript will convert the numeric to a string format.

let test = “Vanhelpsu ” + “7 “;

console.log(test);  // Result is – vcanhelpsu 7 here Number 7 is coerced into a string

It also coerces values ​​when performing other program operations in a JavaScript program.

console.log(“9” – 3);  // result is – 6 hare String “9” is coerced into a number

console.log(“10” * 3);  // result is – 30 here String “10” is coerced into a number

console.log(9 + true);  // result is – 10 here Boolean true is coerced into 1

console.log(7 + false); // result is – 7 here Boolean false is coerced into 0

JavaScript programming will not always force you to bind data types to variables in an intuitive way. For example, when using the + operator with two non-numeric strings, JavaScript concatenates the strings instead of adding them.

console.log(“9” + “7”);  // result is – “97” it Concatenation instead of addition tow string