Yarov

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Element

Box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
• elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
• elem.getClientRects(), elem.getBoundingClientRect()

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var config = {
  "menu":[],
  "widget":[]
};

var setConfig =function(){
  $.each($('[data-type]'), function(index, data){
    if(data.dataset.type =="menu"){
      $(data).find('ul li').each(function(index, data){
        config.menu.push($(data).text());