最常用的javascript自定义函数大搜集

function $() { 
  var elements = [];
   for (var i = 0; i < arguments.length; i++) {
       var element = arguments[i];
        if (typeof element == 'string')
           element = document.getElementById(element);
       if (arguments.length == 1)
          return element;
       elements.push(element);
  }
   return elements;
}

function toggle(obj) { 
   var el = document.getElementById(obj);
    
        el.style.display=(el.style.display !="none"?"none":"")
}