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--- notes:javascript_cheat_sheet [2026/09/15 03:05]
67.244.149.57 old revision restored (2026/08/03 07:07)
+++ notes:javascript_cheat_sheet [2026/09/15 05:17] (current)
186.158.200.169 old revision restored (2026/08/04 16:54)
@@ 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.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).
@@ Line 112: / Line 87: @@
      ";expires="+exdate.toGMTString());
 } </code>
-  * 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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