showpic.js

来自「《JavaScript DOM编程艺术》一书中的配套源代码」· JavaScript 代码 · 共 8 行

function showPic(whichpic) {
  var source = whichpic.getAttribute("href");
  var placeholder = document.getElementById("placeholder");
  placeholder.setAttribute("src",source);
  var text = whichpic.getAttribute("title");
  var description = document.getElementById("description");
  description.firstChild.nodeValue = text;
}