function $() {
var elements = new Array();
for (var i = 0; i < arguments.length; i++)
{
var element = arguments[i];
if (typeof element == 'string')
{
if (document.getElementById)
{
element = document.getElementById(element);
}
else if (document.all)
{
element = document.all[element];
}
}
elements.push(element);
}
if (arguments.length == 1 && elements.length > 0)
{
return elements[0];
}
else
{
return elements;
}
}
调用：
function doing()
{
var logo = $("logo");
}