// #region 切换背景颜色
var flag =false;
document.getElementById("js-file-test").onclick = function()
{
    if(flag)
    {
        event.currentTarget.style.backgroundColor = "goldenrod";
    }
    else
    {
        event.currentTarget.style.backgroundColor = "green";
    }
    flag = !flag;
};
// #endregion