Basic OO question.`

[Bucco]

How do I iterate through an object to pull out the object's property
and then the property's value. Take this code for instance:

var book = new Object();
book.title = "javascript: The Definitive Guide";

function displayPropertyNames(obj) {
var names = "";
for(var name in obj) names += name + ": " + obj.name + "<br>";
document.write(names);
}
displayPropertyNames(book);

This produces:

title: Undefined

What I want is:

title: javascript: The Definitive Guide

What am I doing wrong.

Thanks in advance.

:)
SA

[Yann-Erwan Perio]

Bucco wrote:

[Square Bracket Notation]

for(var name in obj) names += name + ": " + obj.name + "<br>";

The square bracket notation lets you use a string variable as
identifier: obj[name] is what you're looking for!

<URL:http://www.jibbering.com/faq/faq_notes/square_brackets.html>
HTH,
Yep.

[ASM]

Bucco wrote:

How do I iterate through an object to pull out the object's property
and then the property's value. Take this code for instance:

var book = new Object();
book.title = "javascript: The Definitive Guide";

function displayPropertyNames(obj) {
var names = "";
for(var name in obj) names += name + ": " + obj.name + "<br>";
for(var name in obj) names += name + ": " + obj[name] + "<br>";
document.write(names);
}
displayPropertyNames(book);

<style type="text/css">
#obj p { text-align: right; background: #ff6;margin:1px auto;
width:520px; clear:left}
#obj span { float:right;width: 400px;
color:blue;text-align:left;padding-left:8px }
</style>
<script type="text/javascript">
var book = new Object();
book.title = "javascript: The Definitive Guide";
book.src = "folder/file.jpg"
book.onclick = "alert('it works');";

function displayPropertyNames(obj) {
var names = "";
for(var name in obj)
names += '<p><span>' + obj[name] + '<\/span>'+ name + ' = ' ;
document.write('<div id="obj">'+names+'<\/div>');
}
displayPropertyNames(book);
</script>
--
Stephane Moriaux et son [moins] vieux Mac

[Lee]

Bucco said:

How do I iterate through an object to pull out the object's property
and then the property's value. Take this code for instance:

var book = new Object();
book.title = "javascript: The Definitive Guide";

function displayPropertyNames(obj) {
var names = "";
for(var name in obj) names += name + ": " + obj.name + "<br>";
document.write(names);
}
displayPropertyNames(book);

This produces:

title: Undefined

What I want is:

title: javascript: The Definitive Guide

What am I doing wrong.

The "dot" notation (obj.name) requires that anything that appears
after a dot be a literal name, not a variable. With variables,
you use the bracket notation:

+ obj[name] +