js中往html中添加标签

添加标签

 function load(src, resolve) {
      let script = document.createElement("script");
      script.src = src;
      script.onload = resolve;
      document.body.appendChild(script);
    }
    load("js/hd.js", () => {
      load("js/houdunren.js", () => {
        houdunren();
        load("js/a.js", () => {
          houdunren();
        });
      });
    });