javascript - what are the consequences of using === in pre javascript1.3? -

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the strict equal operator appeared in javascript1.3 , ecmascript 3rd edition.

the oldest browser have ie6, implements 1.3. don't have practical way test outcome of === on browsers.

if use === happen javascript1.2 browsers?

and still exist today point should care?

edit 1: people suggesting should test <script language="javascript1.2">. well, not work that.

i executed on modern firefox , chrome:

<script language="javascript1.2">     alert( "1" === 1 ); </script>

and returned false. absolutely not happend on javascript1.2 (it either syntax error or true).

you really, shouldn't care them. we're talking version of netscape 4, released on 1997 , no 1 it's using anymore. , honestly, if have write code compatible such browsers, have bigger issues strict equal operator.

so, unless have real use case – , hope you haven't – wouldn't care. threat such browsers "no javascript enabled" browser, display them pure text version of website or warning message upgrade browser.


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