JavaScript Examples Bible - UserWorks Technologies

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array.concat()
JavaScript Examples Bible: The Essential Companion to JavaScript Bible
✦ Walk through the steps for the array.splice() method to observe how
JavaScript in NN4+ and IE5.5+ can replace entries inside an array. One example
replaces three items with one, indicating that you are not bound to maintaining
the same array length.
Array Object Methods
array.concat(array2)
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓ ✓ ✓ ✓
Example
Listing 37-6 is a bit complex, but it demonstrates both how arrays can be joined
with the array.concat() method and how values and objects in the source arrays
do or do not propagate based on their data type. The page is shown in Figure 17-1.
Figure 17-1: Object references remain “alive” in a concatenated array.
After you load the page, you see readouts of three arrays. The first array consists
of all string values; the second array has two string values and a reference to a form