Detect a Variable Exists in jQuery -

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hello rather new jquery , have situation here.

i setting default position on document.ready below

$('.categorytitle').scrollto($(".people .sants a.modeling").attr('href'), 750, {easing:'easeoutexpo'});

now works when placed on page containing .categorytitle class

the issue arises when script cannot find .categorytitle class in document

i tried below code did not work

if($('.categorytitle').length!= 0){      $('.categorytitle').scrollto($(".people .sants a.modeling").attr('href'), 750, {easing:'easeoutexpo'}); }

can on way can find if .categorytitle exists in page?

many thanks!

this complete code trying implement.

        if($('.categorytitle').length){         $('.categorytitle').scrollto($(".people a.modeling").attr('href'), 750, {easing:'easeoutexpo'});         }         if($('.categorytext').length){         $('.categorytext').scrollto($(".people a.modeling").attr('href'), 750, {easing:'easeoutexpo'});         }         if($('.models').length){         $('.models').scrollto($(".people a.modeling").attr('href'), 750, {easing:'easeoutexpo'});         }

i "f undefined" jquery scrollto script file. seems $(".people .sants a.modeling").attr('href') undefined , error.

if($('.categorytitle')){      $('.categorytitle').scrollto($(".people .sants a.modeling").attr('href'), 750, {easing:'easeoutexpo'}); }

try one


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