js在页面link/script/img链接后缀加随机数或当前时间

1、在link样式链接加随机数后缀

<script type="text/javascript">
  document.write("<link rel='stylesheet' type='text/css' href='style.css?v=" + Math.random() + "'/>");
</script>

2、在js链接加当前时间后缀

<script type="text/javascript">
  var timertamp = new Date().getTime();
  document.write('<script src="js/style.js?timertamp=' + timertamp.toString() + '"><\/script>');
</script>

3、给页面所有img图片链接批量添加时间后缀

function addTimertamp(img,src){
  var timertamp = new Date().getTime();
  img.src = src+"?timertamp = "+ timertamp.toString();
}

//调用方法
<img src="/images/pic.jpg" onclick="addTimertamp(this,'/images/pic.jpg')" alt="img">