1 | function isTag(elem){
|
2 | return elem.nodeType === 1;
|
3 | }
|
4 | function getChildren(elem){
|
5 | return Array.prototype.slice.call(elem.childNodes, 0);
|
6 | }
|
7 | function getParent(elem){
|
8 | return elem.parentElement;
|
9 | }
|
10 |
|
11 | module.exports = {
|
12 | isTag: isTag,
|
13 | getSiblings: function(elem){
|
14 | var parent = getParent(elem);
|
15 | return parent && getChildren(parent);
|
16 | },
|
17 | getChildren: getChildren,
|
18 | getParent: getParent,
|
19 | getAttributeValue: function(elem, name){
|
20 | return elem.attributes[name].value;
|
21 | },
|
22 | hasAttrib: function(elem, name){
|
23 | return name in elem.attributes;
|
24 | },
|
25 | getName: function(elem){
|
26 | return elem.tagName.toLowerCase();
|
27 | },
|
28 | findOne: function findOne(test, arr){
|
29 | var elem = null;
|
30 |
|
31 | for(var i = 0, l = arr.length; i < l && !elem; i++){
|
32 | if(test(arr[i])){
|
33 | elem = arr[i];
|
34 | } else {
|
35 | var childs = getChildren(arr[i]);
|
36 | if(childs && childs.length > 0){
|
37 | elem = findOne(test, childs);
|
38 | }
|
39 | }
|
40 | }
|
41 |
|
42 | return elem;
|
43 | },
|
44 | findAll: function findAll(test, elems){
|
45 | var result = [];
|
46 | for(var i = 0, j = elems.length; i < j; i++){
|
47 | if(!isTag(elems[i])) continue;
|
48 | if(test(elems[i])) result.push(elems[i]);
|
49 | var childs = getChildren(elems[i]);
|
50 | if(childs) result = result.concat(findAll(test, childs));
|
51 | }
|
52 | return result;
|
53 | },
|
54 |
|
55 | getText: function getText(elem) {
|
56 | var str = "",
|
57 | childs = getChildren(elem);
|
58 |
|
59 | if(!childs) return str;
|
60 |
|
61 | for(var i = 0; i < childs.length; i++){
|
62 | if(isTag(childs[i])) str += elem.textContent || elem.innerText || getText(childs[i]);
|
63 | }
|
64 |
|
65 | return str;
|
66 | }
|
67 | };
|