Find out which JavaScript functions work with which browsers.

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What works in which browser and what doesn't.

JavaScript Weirdness

by Ciff Wootton

Scroll on down for a list of every function and which browsers they work with. (editor's note: As many of us have learned, JavaScript can be a bit of a problem if you're trying to develop something with cross-browser compatibility. This chart allows you to look up objects and see which browsers they are compatible with. Good luck.)
September 01, 1999

This is a prety long list so we have split it up over several pages. They are still a bit slow to load due to their size. A - event event - layer layer - screen screen - window window - window Here's a list of the percentage of JavaScript features that work in each of the popular browsers. Sadly, it seems that only about 31% of the features work with both 3.0 and above browsers. I know site developers who have decided simply not to use JavaScript at all rather than mess with the compatibility issues. IE 3 & 4 243 31.68% Nav 3 & 4 373 48.63% IE4 & NAV 4 425 55.41% All 4 browsers 240 31.29% A further caveat: This suggests areas that you should check rather than just go on my say so. Some features could get implemented at intermediate releases such as 4.04 where they weren't available at 4.03 or might be available only on certain platforms. So we are simplifying things a little when we talk about Nav 3 vs. Nav 4. There is a Web Standards pressure group that is trying to get some groundswell of public opinion going to make Microsoft and Netscape toe the line and at least support the W3C and other published standards. They are at http://www.webstandards.org/ and are called 'The Web Standards Project'. Here's the whole, frightening list a through event: Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes escape() Limited Yes Yes Yes Unicode supported in IE 4 eval() Yes Yes Yes Yes Crashes Nav 2 on Win 3.1 getClass() No No Yes Yes Used for access to Java applet classes Infinity No Yes No No   isFinite() No Yes No Yes   isNaN() No Yes Yes Yes   NaN No Yes No No   parseFloat() Yes Yes Yes Yes   parseInt() Yes Yes Yes Yes   taint() No No Deprecated Deprecated Deprecated in Nav 4 unescape() Limited Yes Yes Yes Unicode supported in IE 4 untaint() No No Deprecated Deprecated Deprecated in Nav 4 Functions Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes apply() No No No Yes   arguments[] Deprecated Deprecated Deprecated Deprecated Deprecated in favour of the argvuments object arity No No No Yes Requires language switch to select JS 1.2 for it to work caller Deprecated Deprecated Deprecated Deprecated Deprecated - do not use length No Yes Yes Yes   prototype No Yes Bugged Yes Bugged in Nav 3 toString() Yes Yes Yes Yes   Anchor Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes name No Yes No Yes   text No No No Yes   x No No No Yes   y No No No Yes   Applet Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes <public fields of applet> No Yes Yes Yes   <public methods of applet>() No Yes Yes Yes   Arguments Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes callee No Yes No Yes   caller No No No Bugged Bugged in Nav 4 length No Yes Yes Yes   Array Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes concat() No Yes No Yes   join() No Yes Yes Yes   length No Yes Yes Yes   pop() No No No Yes   push() No No No Yes   reverse() No Yes Yes Yes   shift() No No No Yes   slice() No Yes No Bugged Negative positions not available in Nav 4 sort() No Yes Yes Yes   splice() No No No Bugged Some bugs in Nav 4 toString() No Yes Yes Yes   unshift() No No No Yes   Boolean Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes toString() No Yes Yes Yes   Button Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes blur() Yes Yes Yes Yes   click() Yes Yes Yes Yes   focus() Yes Yes Yes Yes   form Yes Yes Yes Yes   name Yes Yes Yes Yes   onblur Yes Yes Yes Yes   onclick Limited Yes Yes Yes Enhanced in JS 1.1 onfocus Yes Yes Yes Yes   type No Yes Yes Yes   value Bugged Yes Yes Yes Possibly buggy in IE 3 Checkbox Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes blur() Yes Yes Yes Yes   checked Yes Yes Yes Yes   click() Yes Yes Yes Yes   defaultChecked Yes Yes Yes Yes   focus() Yes Yes Yes Yes   form Yes Yes Yes Yes   name Yes Yes Yes Yes   onblur Yes Yes Yes Yes   onclick Limited Yes Yes Yes Enhanced in JS 1.1 onfocus Yes Yes Yes Yes   type No Yes Yes Yes   value Bugged Yes Yes Yes Possibly buggy in IE 3 Crypto Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes random() No No No Yes Available in Nav 4.04 onwards signText() No No No Yes Available in Nav 4.04 onwards Date Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes getDate() Yes Yes Yes Yes Number of digits varies getDay() Yes Yes Yes Yes   getFullYear() No Yes No Yes   getHours() Yes Yes Yes Yes   getMilliseconds() No Yes No Yes   getMinutes() Yes Yes Yes Yes   getMonth() Yes Yes Yes Yes   getSeconds() Yes Yes Yes Yes   getTime() Yes Yes Yes Yes   getTimezoneOffset() Yes Yes Yes Yes   getUTCDate() No Yes No Yes   getUTCDay() No Yes No Yes   getUTCFullYear() No Yes No Yes   getUTCHours() No Yes No Yes   getUTCMilliseconds() No Yes No Yes   getUTCMinutes() No Yes No Yes   getUTCMonth() No Yes No Yes   getUTCSeconds() No Yes No Yes   getYear() Yes Yes Y2K bugged Y2K bugged Not Y2K compliant parse() Yes Yes Yes Yes   setDate() Yes Yes Yes Yes   setFullYear() No Yes No Yes   setHours() Yes Yes Yes Yes   setMilliseconds() No Yes No Yes   setMinutes() Yes Yes Yes Yes   setMonth() Yes Yes Yes Yes   setSeconds() Yes Yes Yes Yes   setTime() Yes Yes Yes Yes   setUTCDate() No Yes No Yes   setUTCFullYear() No Yes No Yes   setUTCHours() No Yes No Yes   setUTCMilliseconds() No Yes No Yes   setUTCMinutes() No Yes No Yes   setUTCMonth() No Yes No Yes   setUTCSeconds() No Yes No Yes   setYear() Yes Yes Yes Yes   toGMTString() Deprecated Deprecated Deprecated Deprecated Deprecated in JS 1.2 in favour of toUTCString - Do not use toLocaleString() Yes Yes Yes Yes   toString() Yes Yes Yes Yes   toUTCString() No Yes No Yes   UTC() Yes Yes Yes Yes Bugged in Nav 2 valueOf() No Yes Yes Yes   Document Object Method or Property IE 3 IE 4 Nav 3 Nav 4 Notes activeElement No Yes No No   alinkColor Yes Yes Yes Yes   all[] No Yes No No   anchors[] No Yes No Yes   applets[] No Yes Yes Yes   bgColor Yes Yes Yes Yes   captureEvents() No No No Yes   charset No Yes No No   children[] No Yes No No   classes No No No Yes   clear() Deprecated Deprecated Deprecated Deprecated Deprecated - do not use close() Yes Yes Yes Yes   contextual() No No No Yes   cookie Yes Yes Yes Yes   defaultCharset No Yes No No   domain Yes Yes Yes Yes   elementFromPoint() No Yes No No   embeds[] No Yes Yes Yes   expando No Yes No No   fgcolor Yes Yes Yes Yes   forms[] Yes Yes Yes Yes   getSelection() No No No Yes   handleEvent() No No No Yes   height No No No Yes   ids No No No Yes   images[] No Yes Yes Yes   lastModified Yes Yes Yes Yes   layers[] No No No Yes   linkColor Yes Yes Yes Yes   links[] Yes Yes Yes Yes   location Deprecated Deprecated Deprecated Deprecated Deprecated in JS 1.1 in favour of document.URL open() Yes Yes Yes Yes   parentWindow No Yes No No   plugins[] No Yes Yes Yes   readyState No Yes No No   referrer Bugged Yes Yes Yes Broken in IE 3 releaseEvents() No No No Yes   routeEvent() No No No Yes   tags No No No Yes   title Yes Yes Yes Yes   URL No Yes Yes Yes   vlinkColor Yes Yes Yes Yes   width No No No Yes   write() Yes Yes Yes Yes   writeln() Yes Yes Yes Yes   This is a prety long list so we have split it up over several pages. They are still a bit slow to load due to their size. A - event event - layer layer - screen screen - window window - window