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  1. <!DOCTYPE html>
  2. <script>
  3. 'use strict'
  4.  
  5. Object.isObject = Object.isObject || function isObject(obj) { return !!obj && typeof obj == 'object' }
  6.  
  7.  
  8.  
  9. function byXJSON(xjson) {
  10.  
  11.  
  12. 	var refs = JSON.parse(xjson)
  13.  
  14.  
  15. 	var vals = refs.map(function (ref) {
  16. 		return typeof ref == 'object' ? {} : ref
  17. 	})
  18.  
  19. 	refs.reduceRight(function (goo ,ref, id) {
  20. 		if (!Object.isObject(ref)) return
  21. 		Object.keys(ref).forEach(function (key) {
  22. 			vals[id][key] = vals[ref[key]]
  23. 		})
  24. 	}, void 0)
  25.  
  26. 	return vals[0]
  27.  
  28. }
  29.  
  30.  
  31.  
  32. function toXJSON(obj, full) {
  33.  
  34. 	var refs = []
  35. 	var vals = []
  36.  
  37. 	conv(obj, 0)
  38.  
  39.  
  40. 	function conv(obj, id) {
  41.  
  42. 		vals[id] = obj
  43. 		var ref = refs[id] = {}
  44. 		var keys = full ? Object.getOwnPropertyNames(obj) : Object.keys(obj)
  45.  
  46. 		keys.forEach(function (key) {
  47. 			var val = obj[key]
  48.  
  49. 			var id = vals.indexOf(val)
  50.  
  51. 			if (id != -1) {
  52. 				ref[key] = id
  53. 				return
  54. 			}
  55.  
  56. 			id = vals.length
  57. 			ref[key] = id
  58.  
  59. 			if (Object.isObject(val)) {
  60. 				conv(val, id)
  61. 			} else {
  62. 				vals[id] = val
  63. 				refs[id] = val
  64. 			}
  65.  
  66. 		})
  67.  
  68. 	}
  69.  
  70.  
  71. 	chkCir(refs) //循環参照をチェック
  72.  
  73. 	return JSON.stringify(refs)
  74.  
  75. }
  76.  
  77.  
  78.  
  79. function chkCir(refs) {
  80. 	refs.forEach(function (ref, i) {
  81. 		if (!Object.isObject(ref)) return
  82. 		Object.keys(ref).forEach(function (key) {
  83. 			if (Object.isObject(ref[key])) console.log('chkerr', i, key)
  84. 		})
  85. 	})
  86. }
  87.  
  88.  
  89.  
  90. function test(id, obj, full) {
  91.  
  92. 	console.group('test ' + id)
  93. 	var xjson = toXJSON(obj, full)
  94. 	var xobj  = byXJSON(xjson)
  95. 	console.log(xjson)
  96. 	console.dir(xobj)
  97. 	console.dir(obj)
  98. 	console.groupEnd('test ' + id)
  99.  
  100. }
  101.  
  102.  
  103. function testing() {
  104. 	var obj1 = {
  105. 		a: {
  106. 			b: {
  107. 				c: {},
  108. 				d: 'xyz',
  109. 				e: {}
  110. 			},
  111. 			f: 123,
  112. 		},
  113. 		g: [0,1,2,3] 
  114. 	}
  115.  
  116. 	obj1.a.b.c = obj1
  117. 	obj1.a.b.e = obj1.a
  118.  
  119.  
  120. 	test(1, obj1)
  121. 	test(2, Math, true)
  122. 	test(3, window)
  123.  
  124. }
  125.  
  126.  
  127. window.onload = testing
  128.  
  129. </script>
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https://ideone.com/CQA3e3
language:
Text (text 6.10)
created:
10 years ago
visibility:
secret

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