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--- notes:javascript_cheat_sheet [2026/07/23 08:47]
103.213.36.10 old revision restored (2026/06/13 22:02)
+++ notes:javascript_cheat_sheet [2026/07/24 15:24] (current)
47.79.200.137 old revision restored (2026/06/25 10:17)
@@ Line 45: / Line 45: @@
   * function name(var1,var2,...) {}
   * \", \n, \t, \r, \', \&, \\
-  * with (object) { } changes default object for fields.
-==== Events, Error Handling & Popups ====
+==== Events, Error Handling and Popups ====
   *  try { throw "errname"; } catch(err) {}
   * onerror=handleErr; handleErr(msg,url,linenum)
@@ Line 66: / Line 65: @@
 ==== 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.lastname=new_lastname; } </code>
-  * Objects can be created using a template <code javascript>
-function person(firstname) {
-  this.firstname=firstname;
-  this.newfirstname =
-    function (new_firstname)
-    { this.lastname=new_lastname; }
-}
-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).
@@ Line 113: / Line 89: @@
   * The onsubmit event can be used to validate a form.
   * document.img_name.src ="pic.gif" changes an image.
-  * To change the content of a block with a given id : <code javascript>
-document.getElementById("block_id").innerHTML=txt;</code>
-  * To set or clear a timed action: <code javascript>
-var t=setTimeout("javascript statement",milliseconds);
-clearTimeout(t); </code>

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