HTML and CSS Reference
In-Depth Information
with new ones. (Don't confuse this method with the
slice()
method. The
slice()
method copies elements, the
splice()
method removes and/or replaces elements.
Ropes, tapes, and films are spliced; bread, meat, and golf balls are sliced.)
FORMAT
Arrayname.splice(index position, number of elements to remove);
Arrayname.splice(index position, number of elements to remove,
replacement elements);
EXAMPLE
myArray.splice(3, 2);
myArray.splice(3, 2, "apples","oranges");
EXAMPLE
9.15
<html>
<head><title>Array splice() method</title></head>
<body>
<script type="text/javascript">
//
splice(starting_pos, number_to_delete, new_values)
1
var names=new Array("Tom","Dan", "Liz", "Jody");
document.write("<b>Original array: "+ names + "<br />");
2
names.splice(1, 2, "Peter","Paul","Mary");
3
document.write("New array: "+
names
+ "</b>");
</script>
</body>
</html>
EXPLANATION
1
An
Array
object called
names
is declared and initialized.
2
The
splice()
method allows you to delete elements from an array and optionally re-
place the deleted elements with new values. The first arguments to the splice meth-
od are
1, 2
. This means: start at element 1, and remove a length of 2 elements. In
this example, element 1 starts with
“Dan”
(element 0 is
“Tom”
).
“Liz”
is the second
element. Both
“Dan”
and
“Liz”
are removed. The next three arguments,
“Peter”
,
“Paul”
, and
“Mary”
, are then inserted into the array, replacing
“Dan”
and
“Liz”
.
3
The new
names
array is displayed in the browser window (see Figure 9.18).
Figure 9.18
The
splice()
method to delete and insert elements of an array.
