class Picture {
constructor(icon) {
this.icon = icon
}
}
When I run this code twice in the Chrome console it doesn't throw any errors.
But when I try running it twice in the Firefox console it says Uncaught SyntaxError: redeclaration of let Picture. Why do the browsers behave differently?
A class can't be redefined. It is actually a block scoped variable.
If you're experimenting with code in a web browser, such as the Firefox Web Console (Tools > Web Developer > Web Console) and you 'Run' a definition of a class with the same name twice, you'll get a SyntaxError: redeclaration of let ClassName;
Redeclaration of let/const is allowed in chrome console. Run the below statement twice:
let x = 2;
Check this SO answer and this link from Chrome blog
Redeclaration within the same console line is not allowed though.