Why JavaScript Strings Are Immutable at coding filters

Why JavaScript Strings Are Immutable?

Yes, JavaScript strings are immutable. This means that once a string is created, its value cannot be changed.

If you try to modify a string, instead of altering the original string, JavaScript will create a new string with the desired modifications.

#javascript
let str = "hello";
str[0] = "H";  // This won't change the string
console.log(str); // Outputs: "hello"

str = "Hello";  // This creates a new string and assigns it to the variable
console.log(str); // Outputs: "Hello"
Why JavaScript String Are Immutable coding filters

In this case, although you tried to change the first character of str, the string itself remained unchanged. The modification creates a new string instead of altering the original one.

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  • theaamirlatif

    Frontend Web Dev and UI/UX Engineer, cross-browser, responsive design, user interaction, web accessibility, and client-side optimization in React, WP, Apps Dev.

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