javascript - jQuery $(selector)[Property](Value) -


i want ask jquery syntax. have found syntax on bootstrap.js there are:

$('.class')['height'](0)

and understand this, equal with:

document.getelementsbyclassname('class')[0].style.height=0

but, have found again same syntax with:

$('.class')['height']($('.class')[0]['scrollheight'])

and

$('.class')['height']($('.class')['height']())(0).offsetheight

what is? not understand this.


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