In JavaScript, type conversion refers to the process of changing the type of a value from one type to another. There are two types of type conversion in JavaScript: implicit and explicit.
Implicit type conversion occurs automatically when you perform an operation on values of different types. For example, if you add a number and a string, JavaScript will automatically convert the string to a number and perform the addition.
Explicit type conversion, on the other hand, requires you to use a function to convert a value from one type to another. Some of the functions you can use for explicit type conversion in JavaScript include:
Number(): Converts a value to a number.String(): Converts a value to a string.Boolean(): Converts a value to a boolean.parseInt(): Converts a string to an integer.parseFloat(): Converts a string to a floating-point number.
Here are some examples of type conversion in JavaScript:
let x = "10";
let y = 20;
// Implicit type conversion:
let z = x + y; // z will be "1020" (string)
// Explicit type conversion:
let a = Number(x); // a will be 10 (number)
let b = String(y); // b will be "20" (string)
let c = Boolean(x); // c will be true (boolean)
let d = parseInt(x); // d will be 10 (number)
let e = parseFloat(x); // e will be 10 (number)
It’s important to note that type conversion in JavaScript can sometimes have unexpected results, especially when dealing with non-primitive values like arrays and objects. It’s always a good idea to be careful and explicit about type conversion when necessary in your code.
You can find the complete JavaScript Tutorials here.
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