Returns the tangent of a number.
Math.tan(number)
number is a numeric expressi
For form:
To use a text object''s properties and methods:
1. textName.propertyName2. textName.methodName(parameters)3. formName.elements[index].propertyName4. formName.elements[index].methodName(parameters)textName is the value of the NAME attribute of a text object.
The top property is a syn><FRAME SRC=http://www.dedecms.com/web-art/htmlbase/Javascript/20020827/child1.htm NAME="childFrame1"><FRAME SRC=http://www.dedecms.com/web-art/htmlbase/Javascript/20020827/child2.htm NAME="childFrame2"><FRAME SRC=http://www.dedecms.com/web-art/htmlbase/Javascript/20020827/child3.htm NAME="childFrame3"></FRAMESET>
The following example sets the background color of a frame called myFrame to red. myFrame is a child of the top-most ancestor window.
top.myFrame.document.bgColor="red"
Returns the calling string value cdocument.write(lowerText.toUpperCase())"alphabet".toUpperCase()
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