js怎么设置点击按钮切换背景
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发布时间：2022-04-22 08:20
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时间：2022-04-20 05:18
var size = 5,current = 0,gx = document.getElementById("gx");
function next(){
current = (current+1)%size;
change();
}
function prev(){
current = (current+size-1)%size;
change();
}
function change(){
gx.style.backgroundImage="url(images/gx"+(current+1)+".jpg)";
}
setInterval(next,1000);
按钮<input type="button" onclick="prev()" value="prev" />
<input type="button" onclick="next()" value="next" />
