jquery - How to find out if a tag has a specific class AND id -

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have body tag on page has both id , class:

<body class="class" id="id">

i'm trying use jquery chance content further down page, based on class , id are. i've had no success, it's worth, here's tried do:

if($('body').is('#id1')){     if($(this).hasclass('class1')){         $('ul.nav li.first').html('<h2>special title</h2>');     }else if($(this).hasclass('class2')){         $('ul.nav li.first').html('<h2>other title</h2>');     } }else if($('body').is('#id2')){     if($(this).hasclass('class1')){         $('ul.nav li.first').html('<h2>special header</h2>');     }else if($(this).hasclass('class2')){         $('ul.nav li.first').html('<h2>other title</h2>');     } }

anyone have quick way of doing this? i'm terrible @ "if" looping using jquery, have been.

cheers,

t

for record there no need use jquery here.

var isid = (document.body.id === someid); var isclass = (document.body.classname.indexof(someclass) !== -1);  if (isid && isclass) {      // }

[edit]

the class check horrible. try

var regexp = new regexp("(^|//s)" + someclass + "($|//s)", "m"); var isclass = (document.body.classname.search(regexp) !== -1);

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