JavaScript Examples Bible - UserWorks Technologies

Chapter 1 ✦ Generic HTML Element Objects (Chapter 15)
anim id est laborum Et harumd und lookum like Greek to me, dereud
facilis est er expedit distinct.
Because the z-index style property of the hiliter element is set to -1, the element
always appears beneath the primary content on the page. If the user selects a
line number beyond the current number of lines in the main element, the hiliter
element is hidden.
getClientRects()
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Compatibility ✓ ✓
Example
See Listing 15-27, which demonstrates the differences between getClientRects()
and getBoundingClientRect() and shows how you can use the two together.
getElementsByTagName(“tagName”)
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Compatibility ✓ ✓ ✓
Example
Use The Evaluator (Chapter 13 in the JavaScript Bible) to experiment with the
getElementsByTagName() method. Enter the following statements one at a time
into the upper text box and study the results:
document.body.getElementsByTagName(“DIV”)
document.body.getElementsByTagName(“DIV”).length
document.getElementById(“myTable”).getElementsByTagName(“TD”).length
Because the getElementsByTagName() method returns an array of objects, you
can use one of those returned values as a valid element reference:
document.getElementsByTagName(“FORM”)[0].getElementsByTagName(“INPUT”).length
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elementObject.getElementsByTagName()