Abbreviated document. getelementbyid () method [JS tips]

When writing JavaScript, we will often use the document. getelementbyid () method. This long string is easy to write errors, and getelementbyid is case sensitive.
Prototype. one method advocated in JS is to use $ () for short. With the following functions, you can use $ ('id') to implement document. how about the getelementbyid ('id') function!

Function $ ()
{
VaR elements = new array ();
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;
}

What's better about this function is that if you want it to submit an array with multiple IDs, it will also return an array of multiple elements to you!