function styleHeaderSiblings() { if(!document.getElementsByTagName) return false; var headers = document.getElementsByTagName("h1"); var elem; for(var i=0; i<headers.length; i++) { elem = getNextElement(headers[i].nextSibling); elem.style.fontWeight = "bold"; elem.style.fontSize = "1.2em"; }}
var elem是全局變量還是局部變量，特別是在函數(shù)里函數(shù)對象聲明？
倚天杖
2018-11-14 15:19:45