JavaScript Examples Bible - UserWorks Technologies

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JavaScript Examples Bible: The Essential Companion to JavaScript Bible
Example
You can use the toLowerCase() and toUpperCase() methods on literal strings,
as follows:
var newString = “HTTP://www.Netscape.COM”.toLowerCase()
// result = “http://www.netscape.com”
The methods are also helpful in comparing strings when case is not important, as
follows:
if (guess.toUpperCase() == answer.toUpperCase()) {...}
// comparing strings without case sensitivity
string.toString()
string.valueOf()
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Examples
Use The Evaluator to test the valueOf() method. Enter the following statements
into the top text box and examine the values that appear in the Results field:
a = new String(“hello”)
typeof a
b = a.valueOf()
typeof b
Because all other JavaScript core objects also have the valueOf() method, you can
build generic functions that receive a variety of object types as parameters, and the
script can branch its code based on the type of value that is stored in the object.
Number Object
Number.MAX_VALUE
Properties
MAX_VALUE
MIN_VALUE
NEGATIVE_INFINITY
POSITIVE_INFINITY
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓ ✓ ✓ ✓ ✓ ✓