jquery to change style attribute of a div class

Just try $('.handle').css('left', '300px');

if you just want to set the style attribute use

$('.handle').attr('style','left: 300px');

Or you can use css method of jQuery to set only one css style property

$('.handle').css('left', '300px');

OR same as key value

$('.handle').css({'left': '300px', position});

More info on W3schools

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