October 1999
Intermediate to advanced
480 pages
14h 47m
English
Content preview from JavaScript Application Cookbook
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objects.js
- Practical uses
Generic object creation, object inspection
- Version requirement
JavaScript 1.1
- Functions
makeObj(),parseObj(),objProfile()
Now JavaScript objects. So many things to do with them, so little time to try them all. objects.js provides two utilities. One is a generic object constructor, the other is a basic object inspector. Open ch06\objects.html in your browser. Figure 6.15 shows you what you get.
Figure 6-15. The results of objects.html
Object inspector functions parseObj() and
objProfile() reveal the properties of two objects:
one represented by variable someObject
; the
other is the location object of the window. Have a look at
objects.html
in Example 6.10 to
see how this gets under way.
Example 6-10. objects.html
1 <HTML> 2 <HEAD> 3 <TITLE>objects.js Example</TITLE> 4 <STYLE type="text/css"> 5 <!-- 6 td { font-family: courier new; font-size: 14} 7 --> 8 </STYLE> 9 <SCRIPT LANGUAGE="JavaScript1.1" SRC="objects.js"></SCRIPT> 10 </HEAD> 11 <BODY> 12 <SCRIPT LANGUAGE="JavaScript1.1"> 13 <!-- 14 15 function plainOldObject() { 16 this.name = 'some name'; 17 this.numba = 1000; 18 this.objInherit = new makeObj('propertyOne', 'thisProperty', 19 'propertyTwo', 'thatProperty', 'propertyThree', 'theOtherProperty'); 20 return this; 21 } 22 23 var someObject = new plainOldObject(); 24 25 document.write(objProfile('someObject', 'self.location')); 26 //--> 27 ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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