<!DOCTYPEhtml><html><head><meta charset="UTF-8"></head><body><a id="click">点击切换颜色</a></body><script>var btn = document.getElementById("click");var body =document.body;let array=["#000000","#FF0000"];let index=0;btn.onclick = function(){body.style.backgroundColor = array[index];index=(index+1)%array.length;}</script></html>
代码中在此处：
let array=["#000000","#FF0000"];
修改自己要修改的颜色即可
