关于Javascript图片库改进的问题

Question

最近在学习Javascript编程的艺术，其中有一章节说的是图片库的问题，实现点击链接，在网页不跳转的情况下，更换下方的图片的效果。

现在有一个问题，当我点击按钮，网页会跳转，我也在匿名函数里写了点击返回false的，为什么还会跳转呢？求助，求助，谢谢！

以下是代码：

Answer 1

执行prepareGallery方法：prepareGallery();

Answer 2

实质是你的prepareGallery函数没有执行过，所以没有起效果。你在下面执行，或者声明后马上执行就可以：(function prepareGallery() {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (!document.getElementsByTagName) {return false;}&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (!document.getElementById) {return false;}&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (!document.getElementById("imageGallery")) {return false;}&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;var gallery = document.getElementById("imageGallery");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;var links = gallery.getElementsByTagName("a");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (var i=0; i<links.length; i++){&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;links[i].onclick = function(){&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; showPic(this);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return false; //屏蔽游览器跳转的行为&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;})();&nbsp; //这里立即执行了函数。