Home > Web Development > Web Developer Guidelines > Javascript

Javascript Guidelines

No.	Checkpoint	Source
1.1	All JavaScript is accompanied by the `<noscript>` element containing the equivalent content or functionality provided by the JavaScript	Priority 1
1.2	The site is functional and all content available when JavaScript is disabled	Priority 1
1.3	The page does not contain JavaScript links	Priority 1
1.4	JavaScript does not cause flickering	Priority 1
1.5	Any movement caused by JavaScript can be stopped	Priority 2
1.6	JavaScript does not create any popup windows	Priority 2
1.7	JavaScript does not open any new browser windows	Priority 2
1.8	JavaScript does not change the focus to another browser window	Priority 2
1.9	When JavaScript is used to create menu fly-overs, the relevant head navigation item is a link	Priority 2
1.10	When JavaScript is used to create expandable/collapsible menus, the default presentation i.e. when JavaScript is disabled, has all menu items and sub-items expanded	Priority 2
1.11	JavaScript has not been used for form submission	Priority 1
1.12	Where JavaScript has been used for form validation, there is a server-side fallback	Priority 1
1.13	JavaScript does not cause a refresh of the page unless the user authorises it	Priority 2
1.14	Where JavaScript has been used to update or refresh a page, the user is aware that this update or refresh will occur	Priority 2
1.15	Where JavaScript has been used to update a page, the updated content appears after the current focus	Priority 2
1.16	JavaScript does not require any timed responses	Priority 2
1.17	The event handler `ondblclick` is not used	Priority 2
1.18	Ensure event handlers are input-device independent	Priority 2
1.19	Event handlers do not rely on the user's mouse coordinates	Priority 2