December 2001
Intermediate to advanced
480 pages
9h 22m
English
Content preview from JavaScript Design
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Precedence
The order in which expressions are evaluated based on their operators is known as precedence. Multiplication and division occur before addition and subtraction, so any operands that are to be multiplied or divided occur before ones that are added and subtracted. Precedence can be reordered by placing expressions within parentheses. The innermost parentheses are evaluated first and work outward. So, if you want two numbers added before multiplication, place them in parentheses. The following two script excerpts show the difference results from different precedence order:
var alpha = 3 * 4 + 7 //alpha's value is 19 — 12 + 7
var beta = 3 * (4 + 7) // beta's value is 33 — 3 * 11 When all of the operators have the same precedence, the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.