Booleans are named after George Boole, an English…

“When you delete a property, you’re not just deleting the value of the property, you’re deleting the property itself. And, if you try to…

— Eric Freeman

“the constructor always has a prototype property. More”

— Eric Freeman

“when you assign a value to a variable name that hasn’t been previously declared, it is treated as a new, global variable. So be…

— Eric Freeman

“Web Workers have a global function named importScripts that you can use to import one or more JavaScript files into your worker. To”

— Eric Freeman

“If the two values have different types, try to convert them into the same type and then compare them”

— Eric Freeman

“Well, it’s a browser policy, and it says you can’t retrieve data from a domain that is different from the domain the page itself…

— Eric Freeman

“Math is not a constructor, or even a function. It’s an object. As you know, Math is a built-in object that you can use…

— Eric Freeman

“When you pass zero to setTimeout, you’re asking JavaScript to run your timeout handler as soon as it possibly can — and this leads…

— Eric Freeman

“JavaScript doesn’t have a character type. So characters are returned as new strings containing one character.”

— Eric Freeman

“Closures are often used to capture state for event handlers.”

— Eric Freeman

“Lexical scope means that we can determine the scope of a variable by reading our code.”

— Eric Freeman

“Q: Q: You said getElementsByTagName returns a list. Do you mean an array? A: A: It returns an object that you can treat like…

— Eric Freeman

“the truth is JavaScript actually makes two passes over your page: in the first pass it reads all the function definitions, and in the…

— Eric Freeman

“If you change any property in the prototype, it affects all the objects that inherit from that prototype, unless that object has overridden that…

— Eric Freeman

“methods in objects are properties too. They just happen to have a function assigned to them.”

— Eric Freeman