Javascript Demystified by Jim Keogh

By Jim Keogh

No matter if you don't have any programming event, you will discover ways to create dynamic, interactive websites with support from this easy-to-use, self-teaching consultant. writer and programming teacher Jim Keogh covers the fundamentals of this best internet improvement language and explains the way to write cross-browser JavaScript courses very quickly.

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The combined logical expression is false only if both individual logical expressions are false. ). The NOT operator is different from the other logical operator in that it does not combine logical expressions. Instead, the NOT operator reverses the logic of a logical expression. ” The not at the end of this sentence reverses the logic of the first part of the sentence. The first part says, “I got a big fat raise,” which is a positive statement. The not reverses the positive statement to a negative statement.

Click OK. N OTE If you are using a different version of Netscape Navigator, keep in mind the steps you take may differ somewhat. 9 10 JavaScript Demystified “Old Timers” Don’t Like JavaScript Most browsers today have no problem running a JavaScript, assuming that the JavaScript option is turned on. However, you never know if someone some place on the Internet hasn’t upgraded to a new browser or still uses a very old browser. x, and America Online versions 3 and earlier can’t run JavaScript because they don’t know how to interpret JavaScript code.

You create the box (declare a variable), place a label on the box (name a variable), and place a value into the box (initialize a variable or assign a value to a variable). Variables and literal values are used with operators to construct an expression. An operator is a symbol that tells the browser how to evaluate the expression. An operator tells the browser to perform an operation on values or variables on one or both sides of the operator. These values or variables are called operands. Arithmetic operators are used to tell the browser to perform arithmetic.

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