What does && mean in Javascript when it's outside of an if statement? (Context inside) -


this question has answer here:

i cleaning code on homepage , found 1 of jquery functions had written so:

$(function(){         var hash = window.location.hash;         hash && $('[id^=search] a[href="' + hash + '"]').tab('show');          $('[id^=search] a').click(function (e) {         $(this).tab('show');         var scrollmem = $('body').scrolltop();         window.location.hash = this.hash;         $('html,body').scrolltop(scrollmem);   }); });

this particular piece changes tabs on homepage when external link contains hash matches hashes in navigation. hadn't worked snippet in while (this 1 of first things ever did website.) , cannot life of me work out in brain hash && $('[id^=search] a[href="' + hash + '"]') translates to. if think of plain english, be?

it if statement:

if (hash) {   $('[id^=search] a[href="' + hash + '"]').tab('show'); }

this equivalent to:

hash && $('[id^=search] a[href="' + hash + '"]').tab('show');

if condition evaluates true next statement after && executed.


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