JavaScript Tutorial/Array/String Indexer
Версия от 18:52, 25 мая 2010; (обсуждение)
Array String Indexes
It is possible to index arrays using strings.
To access an element, a string index value is placed into the [] operator.
<HTML>
<SCRIPT LANGUAGE="JavaScript">
<!--
function populateArray(myArray) {
myArray["A"]=4;
myArray["B"]=2;
myArray["C"]=1;
myArray["D"]=5;
}
function displayArray(myArray){
document.write(myArray["A"]," A.<BR>");
document.write(myArray["B"]," B.<BR>");
document.write(myArray["C"]," C.<BR>");
document.write(myArray["D"]," pairs of D.");
}
var myArray = new Array();
populateArray(myArray);
displayArray(myArray);
-->
</SCRIPT>
</HTML>
Use string as the array indexer
<html>
<head>
<title>Mixing Notations</title>
<script language="javascript" type="text/javascript">
<!--
var x = new Array();
x["first"] = "1st";
x["second"] = "2nd";
x["third"] = "3rd";
alert(x.first + ", " + x.second + ", " + x.third);
//-->
</script>
</head>
<body>
<h1>Mixing Notations</h1>
</body>
</html>