js 改a的属性

完整的代码:

function externalLinks() {

if (!document.getElementsByTagName) return;

var anchors = document.getElementsByTagName("a");

for (var i=0; i<anchors.length; i++) {

var anchor = anchors;

if (anchor.getAttribute("href") &&

anchor.getAttribute("rel") == "external")

anchor.target = "_blank";

}

}

window.onload = externalLinks;