JavaScript Examples Bible - UserWorks Technologies

492
array.reverse()
JavaScript Examples Bible: The Essential Companion to JavaScript Bible
Notice that this method takes the parameter very literally. If you want to include
nonalphanumeric characters, such as a newline or tab, do so with URL-encoded
characters (%0D for a carriage return; %09 for a tab) instead of inline string literals.
In Listing 37-7, the results of the array.join() method are subjected to the
unescape() function in order to display them in the TEXTAREA.
array.reverse()
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓ ✓ ✓ ✓ ✓ ✓
Example
Listing 37-8 is an enhanced version of Listing 37-7, which includes another button
and function that reverse the array and display it as a string in a text area.
Listing 37-8: Array.reverse() Method
Array.reverse()
solarSys = new Array(9)
solarSys[0] = “Mercury”
solarSys[1] = “Venus”
solarSys[2] = “Earth”
solarSys[3] = “Mars”
solarSys[4] = “Jupiter”
solarSys[5] = “Saturn”
solarSys[6] = “Uranus”
solarSys[7] = “Neptune”
solarSys[8] = “Pluto”
// show array as currently in memory
function showAsIs(form) {
var delimiter = form.delim.value
form.output.value = unescape(solarSys.join(delimiter))
}
// reverse array order, then display as string
function reverseIt(form) {
var delimiter = form.delim.value
solarSys.reverse() // reverses original array
form.output.value = unescape(solarSys.join(delimiter))
}
Reversing array element order
This document contains an array of planets in our solar system.