JavaScript Examples Bible - UserWorks Technologies

242
JavaScript Examples Bible: The Essential Companion to JavaScript Bible
scripts
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓ ✓
Example
You can experiment with the document.scripts array in The Evaluator
(Chapter 13 in the JavaScript Bible). For example, you can see that only one SCRIPT
element object is in The Evaluator page if you enter the following statement into the
top text field:
document.scripts.length
If you want to view all of the properties of that lone SCRIPT element object, enter
the following statement into the bottom text field:
document.scripts[0]
Among the properties are both innerText and text. If you assign an empty
string to either property, the scripts are wiped out from the object model, but not
from the browser. The scripts disappear because after the scripts loaded, they were
cached outside of the object model. Therefore, if you enter the following statement
into the top field:
document.scripts[0].text = “”
the script contents are gone from the object model, yet subsequent clicks of the
Evaluate and List Properties buttons (which invoke functions of the SCRIPT element
object) still work.
selection
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓ ✓
Example
See Listings 15-30 and 15-39 in Chapter 1 of this book to see the
document.selection property in action for script-controlled copying and pasting
(IE/Windows only).
URL
document.URL
See location.