script.js

来自「lynda.com 2007年出品的javascript essential t」· JavaScript 代码 · 共 28 行

window.onload = initLinks;

var myPix = new Array("images/pathfinder.gif","images/surveyor.gif","images/surveyor98.gif");
var thisPic = 0;

function initLinks() {
	document.getElementById("prevLink").onclick = processPrevious;
	document.getElementById("nextLink").onclick = processNext;
}

function processPrevious() {
	if (thisPic == 0) {
		thisPic = myPix.length;
	}
	thisPic--;
	document.getElementById("myPicture").src = myPix[thisPic];
	return false;
}

function processNext() {
	thisPic++;
	if (thisPic == myPix.length) {
		thisPic = 0;
	}
	document.getElementById("myPicture").src = myPix[thisPic];
	return false;
}