https://pilgrimsurfsupply.jp/js/replace.js

1;(function(w, d, name){
2  'use strict';
3  if(!w[name]) w[name] = {};
4
5  // prototype
6  var CdnReplace = (function() {
7    // default vars
8    var
9    DOMAIN = 'pilgrimsurfsupply.jp',
10    CDN_URL = [
11      '//cdn.pilgrimsurfsupply.jp'
12    ],
13    TAGS = [
14      // src
15      'audio',
16      'embed',
17      'img',
18      'input',
19      'script',
20      'source',
21      'track',
22      'video',
23
24      // href
25      'link'
26    ],
27    DATA = 'data-cdn-src';
28
29    // constructor
30    function CdnReplace(option) {
31      this.option = option ? option : {};
32
33      if(!option) {
34        this.option.tags = TAGS;
35        this.option.domain = DOMAIN;
36      }else{
37        if(!this.option.tags) {
38          this.option.tags =   TAGS;
39        }
40        if(!this.option.domain) {
41          this.option.domain = DOMAIN;
42        }
43        if(!this.option.cdn) {
44          this.option.cdn = CDN_URL;
45        }
46      }
47
48      if(this.option.domain == d.domain) return;
49
50      this.proc();
51    }
52    CdnReplace.prototype = {
53      'init': init,
54      'proc': proc,
55      'setOption': setOption,
56      'getOption': getOption
57    };
58    return CdnReplace;
59
60    // initialize
61    function init(option_, tag_) {
62      var
63      _that = this,
64      _tag = d.getElementsByTagName(tag_),
65      _src = '',
66      _domainSrc = '';
67
68      for(var i = 0; _tag.length > i; i++) {
69
70        for(var j = 0; _that.option.cdn.length > j; j++) {
71          _src = _tag[i].src ? _tag[i].src : _tag[i].href || '';
72          _domainSrc = (this.option.domain == d.domain) ?
73            _src : (_src.match(/(https?:)/) ?
74              _src.replace(RegExp.$1+_that.option.cdn[j], '') : _src.replace(_that.option.cdn[j], ''));
75
76          // link is not src. href set.
77          if(!_tag[i].src && _tag[i].href) {
78            if(_src && _tag[i].href != _domainSrc) {
79              _tag[i].href = _domainSrc;
80            }
81          }else{
82            if(_src && _tag[i].src != _domainSrc) {
83              _tag[i].src = _domainSrc;
84            }
85          }
86        }
87
88      }
89    }
90
91    // procedure
92    function proc() {
93      for(var i = 0; this.option.tags.length > i; i++) {
94        this.init(this.option, this.option.tags[i]);
95      }
96    }
97
98    // set option
99    function setOption(option) {
100      this.option = option;
101    }
102
103    // get option
104    function getOption() {
105      return this.option;
106    }
107
108  })();
109
110  // global vars set
111  w[name] = CdnReplace;
112
113})(window, document, 'pilgrim-cdnReplace');