Returns the implementation code of which element the object is in the current level_javascript skills

Copy code The code is as follows:

//Syntax: prev(element)
//Parameters: element object
//Return: What element is the object in the current level, starting from 1
//2010-08-26 15:13:55
function prev(elem,cont) {
if(!cont){cont=1}
elem = elem.previousSibling;
if(elem){return prev(elem,(cont 1)) }
return cont
}

prev($("ext-gen232"))