Non puoi selezionare più di 25 argomenti
Gli argomenti devono iniziare con una lettera o un numero, possono includere trattini ('-') e possono essere lunghi fino a 35 caratteri.
94 righe
1.8 KiB
94 righe
1.8 KiB
var isTag = require("domelementtype").isTag;
|
|
|
|
module.exports = {
|
|
filter: filter,
|
|
find: find,
|
|
findOneChild: findOneChild,
|
|
findOne: findOne,
|
|
existsOne: existsOne,
|
|
findAll: findAll
|
|
};
|
|
|
|
function filter(test, element, recurse, limit){
|
|
if(!Array.isArray(element)) element = [element];
|
|
|
|
if(typeof limit !== "number" || !isFinite(limit)){
|
|
limit = Infinity;
|
|
}
|
|
return find(test, element, recurse !== false, limit);
|
|
}
|
|
|
|
function find(test, elems, recurse, limit){
|
|
var result = [], childs;
|
|
|
|
for(var i = 0, j = elems.length; i < j; i++){
|
|
if(test(elems[i])){
|
|
result.push(elems[i]);
|
|
if(--limit <= 0) break;
|
|
}
|
|
|
|
childs = elems[i].children;
|
|
if(recurse && childs && childs.length > 0){
|
|
childs = find(test, childs, recurse, limit);
|
|
result = result.concat(childs);
|
|
limit -= childs.length;
|
|
if(limit <= 0) break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
function findOneChild(test, elems){
|
|
for(var i = 0, l = elems.length; i < l; i++){
|
|
if(test(elems[i])) return elems[i];
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
function findOne(test, elems){
|
|
var elem = null;
|
|
|
|
for(var i = 0, l = elems.length; i < l && !elem; i++){
|
|
if(!isTag(elems[i])){
|
|
continue;
|
|
} else if(test(elems[i])){
|
|
elem = elems[i];
|
|
} else if(elems[i].children.length > 0){
|
|
elem = findOne(test, elems[i].children);
|
|
}
|
|
}
|
|
|
|
return elem;
|
|
}
|
|
|
|
function existsOne(test, elems){
|
|
for(var i = 0, l = elems.length; i < l; i++){
|
|
if(
|
|
isTag(elems[i]) && (
|
|
test(elems[i]) || (
|
|
elems[i].children.length > 0 &&
|
|
existsOne(test, elems[i].children)
|
|
)
|
|
)
|
|
){
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function findAll(test, elems){
|
|
var result = [];
|
|
for(var i = 0, j = elems.length; i < j; i++){
|
|
if(!isTag(elems[i])) continue;
|
|
if(test(elems[i])) result.push(elems[i]);
|
|
|
|
if(elems[i].children.length > 0){
|
|
result = result.concat(findAll(test, elems[i].children));
|
|
}
|
|
}
|
|
return result;
|
|
}
|