She runs it. It works perfectly.
She has memorized the what , but has no idea about the why . Sarah buys the course, skeptical of the cheesy title. In the first few minutes, Anthony Alicea (calm, whiteboard in hand) says something radical: "JavaScript has a few critical 'weird parts' that seem like bugs, but are actually features. Once you understand them, you stop fighting the language and start wielding it." udemy javascript the weird parts
He draws a box. "The browser creates an Execution Context. Before a single line of your code runs, the parser does a memory pass." Suddenly, Sarah understands why she can call a function before it's defined. The weirdness becomes logical . She runs it
The story then unfolds in three acts:
But every time a bug appears— this is suddenly undefined , a variable changes for no reason, or typeof null returns object —she panics. She thinks, "I just don't have a 'programmer's brain.' JavaScript is broken." Sarah buys the course, skeptical of the cheesy title