HTML implements background image replacement

 
 
 
 var curIndex = 0; var timeInterval = 3000; //切换时间 3秒 可以修改 var arr = new Array(); arr[0] = "../img/hu.jpg"; //这里的是图片存放的相对路径 arr[1] = "../img/bb.jpg"; arr[2] = "../img/cc.jpg"; setInterval(changeImg, timeInterval); function changeImg() { var obj = document.getElementById("picture"); if(curIndex == arr.length - 1) { curIndex = 0; } else { curIndex += 1; } obj.src = arr[curIndex]; }