String value is passed by value, while the array is passed by reference : Variable Definition « Language Basics « JavaScript DHTML






  1. JavaScript DHTML
  2. Language Basics
  3. Variable Definition

String value is passed by value, while the array is passed by reference

   
<html>
<head>
<title>Pass Me</title>
</head>
<body>
<script type="text/javascript">
function alterArgs(strLiteral, aryObject) {
   strLiteral = "new value";
   aryObject[aryObject.length] = "three";
}

var str = "old value";
var ary = new Array("one","two");

alterArgs(str,ary);

document.writeln("string literal is " + str + "<br /> ");
document.writeln("Array object is " + ary);

</script>
</body>
</html>








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