JavaScript Block Scope Explained in 20 Seconds! #shorts
0:25
YouTubeLearnCodeEasy
JavaScript Block Scope Explained in 20 Seconds! #shorts
JavaScript before ES6 (2015) did not support Block Scope. With ES6, JavaScript introduced two powerful keywords: let and const, which allowed variables to be scoped inside { }. 📌 Block Scope means: A variable declared inside a { } block cannot be accessed from outside that block. Example: { let x = 2; } // x can NOT be used here This short ...
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