Javascript

Advanced JavaScript - download pdf or read online

By Chuck Easttom

ISBN-10: 1435611152

ISBN-13: 9781435611153

ISBN-10: 1598220330

ISBN-13: 9781598220339

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1 * 1012 2 * 10-12 Notice that the exponent specification can be in uppercase or lowercase characters. Floating-point math is much more difficult than integer math and is the source of many bugs. Overflow describes the situation in which the exponent Chapter 3 (2 * 80) + (7 * 81) + (4 * 82)+ (1 * 83) = 2 + 56 + 256 + 512 = 82610 30 n Chapter 3 of a floating-point number exceeds the upper limit. Underflow occurs when the exponent is below the lower one. You should avoid calculations that are likely to result in an overflow or an underflow.

Things don’t always look the same in different browsers. For this reason, most professional web developers use multiple browsers to test their code. I would recommend you have at least Internet Explorer and Mozilla Firefox. Since almost all browsers are free downloads, keeping multiple browsers should not be a problem. Basic JavaScript Structure In order to run client-side JavaScript, you must embed the code in the HTML document. Obviously, you cannot place JavaScript statements in the source code in just any location.

All_done allDone // underscores // capitalized letters digit digits // current digit // number of digits in the number A much better set of variables is: current_digit num_of_digits // current digit // number of digits in the number Variable Declaration You have seen how to name a variable, and know why you need variables, but how do you create them? Before you use a variable, you need to create it. JavaScript is a loosely typed language, which means that you do not have to explicitly specify the data type of a variable when you create it.

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Advanced JavaScript by Chuck Easttom


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