js常用代码片段

1、设置iframe高度

                  function calcPageHeight(doc) {       var cHeight = Math.max(doc.body.clientHeight, doc.documentElement.clientHeight)       var sHeight = Math.max(doc.body.scrollHeight, doc.documentElement.scrollHeight)       var height  = Math.max(cHeight, sHeight)       return height   }   var ifr = document.getElementById('divDetail')   ifr.onload = function() {       var iDoc = ifr.contentDocument || ifr.document       var height = calcPageHeight(iDoc)       ifr.style.height = height + 'px'   }