Javascript实现滚动图片新闻的实例代码_javascript技巧

function initGallery(){
for(var i=0; i< 4; i++){
document.getElementById("fPic"+i).style.display = "none";
document.getElementById("fTitl"+i).style.display = "none";
document.getElementById("fNum"+i).style.className = "numOff";
}
startChange();
setTimer();
}

function startChange(){
index = index % 4;

changePic(index);
changeTitl(index);
changeNum(index);

index++;
}

function changePic(index){
for(var i=0; i<4;i++){
document.getElementById("fPic"+i).style.display = "none";
}
document.getElementById("fPic"+index).style.display = "block";
}

function changeTitl(index){
for(var i=0; i<4; i++){
document.getElementById("fTitl"+i).style.display = "none";
}
document.getElementById("fTitl"+index).style.display = "block";
}

function changeNum(index){
for(var i=0; i<4; i++){
document.getElementById("fNum"+i).className = "numOff";
}
document.getElementById("fNum"+index).className = "numOff numOn";
}

function clearTimer(){
this.clearInterval(Timer);
}

function setTimer(){
Timer = window.setInterval(startChange, 3000)
}

function setIndex(index){
this.index = index;
this.startChange();
}