npmcomment/assets/example/example_multiple.js

var COMMENT_URL = '../static/js/comment.0.5.13.js';
var RENDER_ELEMENT_COMMENT = 'comment'; // 渲染评论的标签的 ID

/**
 * 异步加载 js 文件
 * @param {string} url 需要加载的 js 文件地址
 * @param {function} callback js 文件加载后的回调
 */
function loadScript(url, callback){
  var script = document.createElement("script")
  script.type = "text/javascript";

  if (script.readyState){  //IE
      script.onreadystatechange = function(){
          if (script.readyState == "loaded" ||
                  script.readyState == "complete"){
              script.onreadystatechange = null;
              callback();
          }
      };
  } else {  //Others
      script.onload = function(){
          callback();
      };
  }

  script.src = url;
  document.getElementsByTagName("head")[0].appendChild(script);
}


/**
 * 渲染评论组件搭配指定的节点
 * @param {string} id element id
 * @param {string} type 评论的 type
 * @param {string} businessId 评论的 businessId
 */
function render(id, type, businessId) {
  loadScript(COMMENT_URL, function() {
    window.renderComment({
      id: id,
      type: type,
      businessId: businessId
    })
  })
}


document.getElementById('render').addEventListener('click', function() {
  render(RENDER_ELEMENT_COMMENT, 1, 'test');
})

document.getElementById('re-render').addEventListener('click', function() {
  render(RENDER_ELEMENT_COMMENT, 1, 'test1');
})