Problem med getElementsByTagName(tag)
Hej Eksperter! Er der nogle der kan se hvorfor dette script fejler fejlen siger at "var elm is null" ?function getElementsByClassName(className, tag){
var testClass = new RegExp("(^|\\s)" + className + "(\\s|$)");
var tag = tag || "*";
var elm = document.getElementsByTagName('body')[0];
var elements = (tag == "*" && elm.all)? elm.all : elm.getElementsByTagName(tag);
var returnElements = [];
var current;
var length = elements.length;
for(var i=0; i<length; i++){
current = elements[i];
if(testClass.test(current.className)){
returnElements.push(current);
}
}
alert( returnElements.length );
}
