吐槽新浪某个页面的JS
//byid
SAB.register('dom.byId',function($){
return function(id){
if (typeof id === 'string') {
return document.getElementById(id);
}
else {
return id;
}
};
});
//byclass
SAB.register('dom.byClass',function($){
return function(clz,el,tg){
el = el || document;
el = typeof el=='string'?$.dom.byId(el):el;
tg = tg || '*';
var rs = [];
clz = " " + clz +" ";
var cldr = el.getElementsByTagName(tg), len = cldr.length;
for (var i = 0; i < len; ++ i){
var o = cldr[i];
if (o.nodeType == 1){
var ecl = " " + o.className + " ";
if (ecl.indexOf(clz) != -1){
rs[rs.length] = o;
}
}
}
return rs;
};
});
至少应该先判断下有没有getElementsByClassName这个函数吧，这么做真是太奢侈了。
