Differences

This shows you the differences between two versions of the page.

--- notes:javascript_cheat_sheet [2026/07/31 07:30]
49.51.51.17 old revision restored (2026/06/04 13:51)
+++ notes:javascript_cheat_sheet [2026/07/31 14:34] (current)
101.47.19.212 old revision restored (2026/06/04 14:43)
@@ Line 47: / Line 47: @@
   * with (object) { } changes default object for fields.
-==== Events, Error Handling and Popups ====
+==== Events, Error Handling & Popups ====
   *  try { throw "errname"; } catch(err) {}
   * onerror=handleErr; handleErr(msg,url,linenum)
@@ Line 66: / Line 66: @@
 ==== JavaScript Objects ====
   * Objects have properties and methods.
+  * Objects can be created directly <code javascript>
+personObj=new Object();
+personObj.firstname="John";
+personObj.newfirstname =
+ function (new_firstname)
+   { this.firstname=new_firstname; } </code>
+  * Objects can be created using a template <code javascript>
+function person(firstname) {
+  this.firstname=firstname;
+  this.newfirstname =
+    function (new_firstname)
+    { this.firstname=new_firstname; }
+}
+myFather=new person("John");</code>
+  * Object methods can also be assigned by name e.g. <code javascript>
+function person(firstname)
+{
+  this.firstname=firstname;
+  this.newfirstname=newfirstname;
+}
+function newfirstname(new_firstname)
+{ this.firstname=new_firstname; } </code>
+==== Predefined Objects ====
   * String objects have a length property and methods including: indexOf, match, replace
   * new Date() creates a Date object (with today's date).

DokuWiki

Site Tools

Differences

Page Tools