By Eric T. Freeman, Elisabeth Robson
What is going to you research from this book?
This brain-friendly advisor teaches you every little thing from JavaScript language basics to complex themes, together with gadgets, capabilities, and the browser’s record item version. You won’t simply be reading—you’ll be enjoying video games, fixing puzzles, thinking about mysteries, and interacting with JavaScript in methods you by no means imagined. And you’ll write actual code, plenty of it, so that you can begin development your individual net purposes. organize to open your brain as you study (and nail) key themes including:
* the internal information of JavaScript
* How JavaScript works with the browser
* The secrets and techniques of JavaScript types
* utilizing arrays
* the facility of functions
* how you can paintings with objects
* utilising prototypes
* realizing closures
* Writing and trying out applications
What’s so certain approximately this book?
We imagine some time is just too important to waste suffering from new recommendations. utilizing the most recent learn in cognitive technological know-how and studying thought to craft a multi-sensory studying event, Head First JavaScript Programming makes use of a visually wealthy structure designed for a way your mind works, now not a text-heavy method that places you to sleep.
Read or Download Head First JavaScript Programming PDF
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Additional info for Head First JavaScript Programming
Sample text
Write("Life without ice cream isn't the same"); Because the conditional is true, we start executing the block of code. The first statement in the body writes the string “Another scoop!
” to the browser. write("Life without ice cream isn't the same"); 18 Chapter 1 a quick dip into javascript 1 scoop gone, 4 left! The next statement subtracts one from the number of scoops and then sets scoops to that new value, four. write("Life without ice cream isn't the same"); That’s the last statement in the block, so we loop back up to the conditional and start over again.
Take the expression in this statement for instance: Here’s a JavaScript statement that assigns the result of evaluating an expression to the variable total. We use * for multiply and / for divide. var total = price - (price * (discount / 100)); Here’s our variable total. And this whole thing is an expression. And the assignment. If you’ve ever taken a math class, balanced your checkbook or done your taxes, we’re sure these kinds of numeric expressions are nothing new. This expression evaluates to a price reduced by a discount that is a percent of the price.
When the book asks you a question, don’t just skip to the answer. Imagine that someone really is asking the question. The more deeply you force your brain to think, the better chance you have of learning and remembering. 2 Do the exercises. Write your own notes. We put them in, but if we did them for you, that would be like having someone else do your workouts for you. And don’t just look at the exercises. Use a pencil. There’s plenty of evidence that physical activity while learning can increase the learning.