JavaScript Examples Bible - UserWorks Technologies

276
Range.collapsed
JavaScript Examples Bible: The Essential Companion to JavaScript Bible
Methods
start()
stop()
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓ ✓
Example
See Listing 19-3 earlier in this chapter for examples of both the start() and
stop() methods, which are invoked in event handlers of separate controlling buttons
on the page. Notice, too, that when you have the behavior set to slide, stopping
and restarting the MARQUEE does not cause the scroll action to start from a
blank region.
Range Object
Properties
collapsed
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓
Example
Use The Evaluator (Chapter 13 in the JavaScript Bible) to experiment with the
collapsed property. Reload the page and assign a new range to the a global variable
by typing the following statement into the top text box:
a = document.createRange()
Next, set the range to encompass a node:
a.selectNode(document.body)
Enter a.collapsed into the top text box . The expression returns false because
the end points of the range are not the same.