PlainJS – Vanilla JavaScript Repository(plainjs.com)

    export function extend(src) {
      var obj, args = arguments
      
      for (let i = 1; i < args.length; ++i) {
        if (obj = args[i]) {
          for (let key in obj) {
            // check if this property of the source object could be overridden
            if (isWritable(src, key))
              src[key] = obj[key]
          }
        }
      }
     }

    DragSelect.prototype.removeClass = function( element, classname ) {    
      var cn = element.className;
      var rxp = new RegExp( classname + \'\\b\', \'g\' );
      cn = cn.replace( rxp, \'\' );
      element.className = cn;
      return element;    
    };
    
    DragSelect.prototype.hasClass = function( element, classname ) {    
      var cn = element.className;
      if( cn.indexOf( classname ) > -1 ) { return true; }
      else { return false; }    
    };

    if (typeof element === 'string') {
        owner.element = document.querySelector(element);
    } else {
        owner.element = ((typeof element.length !== 'undefined') && element.length > 0) ? element[0] : element;
    }

    return new Proxy({}, {

        get: function(target, name){

            return function(args, body) {

                let newEle = document.createElement(name);

                if(args){
                    let keys = Object.keys(args);
                    for (let i = 0; i < keys.length; i++) {
                        newEle.setAttribute(keys[i], args[keys[i]]);
                    }
                }

                if(body){
                    if(typeof body === 'string'){
                        newEle.textContent = body;
                    } else {
                        newEle.appendChild(body);
                    }
                }
                return newEle;
            }
        }
    })

    bai.DOM.div(

        {"id": "message"}, 

        bai.DOM.p(null, "hello world")

    )