{"id":24,"date":"2013-03-27T14:32:39","date_gmt":"2013-03-27T06:32:39","guid":{"rendered":"http:\/\/www.zyuns.com\/?p=24"},"modified":"2015-02-15T21:00:52","modified_gmt":"2015-02-15T13:00:52","slug":"json-e6-95-b0-e6-8d-ae-e8-bd-ac-e5-8c-96-e4-b8-ba-e6-95-b0-e6-8d-ae-e5-af-b9-e8-b1-a1-e7-9a-84js-e5-a4-84-e7-90-86","status":"publish","type":"post","link":"https:\/\/www.siediyer.cn\/?p=24","title":{"rendered":"Json\u6570\u636e\u8f6c\u5316\u4e3a\u6570\u636e\u5bf9\u8c61\u7684js\u5904\u7406"},"content":{"rendered":"

\u5728\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u4e2d\uff0cjson\u662f\u4ee5\u6587\u672c\uff0c\u5373\u5b57\u7b26\u4e32\u7684\u5f62\u5f0f\u4f20\u9012\u7684\uff0c\u800cJS\u64cd\u4f5c\u7684\u662fJSON\u5bf9\u8c61\uff0c\u6240\u4ee5\uff0cJSON\u5bf9\u8c61\u548cJSON\u5b57\u7b26\u4e32\u4e4b\u95f4\u7684\u76f8\u4e92\u8f6c\u6362\u662f\u5173\u952e\u3002\u4f8b\u5982\uff1a<\/p>\n

JSON\u5b57\u7b26\u4e32:<\/p>\n

var str1 = '{ \"name\": \"cxh\", \"sex\": \"man\" }';<\/pre>\n
 <\/p>\n
JSON\u5bf9\u8c61:<\/p>\n
var str2 = { \"name\": \"cxh\", \"sex\": \"man\" };<\/pre>\n
 <\/p>\n
 <\/p>\n
\u4e00\u3001JSON\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aJSON\u5bf9\u8c61<\/h3>\n
\u8981\u4f7f\u7528\u4e0a\u9762\u7684str1\uff0c\u5fc5\u987b\u4f7f\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u5148\u8f6c\u5316\u4e3aJSON\u5bf9\u8c61\uff1a<\/p>\n
\/\/\u7531JSON\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aJSON\u5bf9\u8c61<\/p>\n
var obj = eval('(' + str + ')');<\/pre>\n
 <\/p>\n
\u6216\u8005<\/p>\n
var obj = str.parseJSON(); \/\/\u7531JSON\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aJSON\u5bf9\u8c61<\/pre>\n
 <\/p>\n
\u6216\u8005<\/p>\n
var obj = JSON.parse(str); \/\/\u7531JSON\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aJSON\u5bf9\u8c61<\/pre>\n
 <\/p>\n
\u7136\u540e\uff0c\u5c31\u53ef\u4ee5\u8fd9\u6837\u8bfb\u53d6\uff1a<\/p>\n
Alert(obj.name);\n\nAlert(obj.sex);<\/pre>\n
 <\/p>\n
\u7279\u522b\u6ce8\u610f\uff1a\u5982\u679cobj\u672c\u6765\u5c31\u662f\u4e00\u4e2aJSON\u5bf9\u8c61\uff0c\u90a3\u4e48\u4f7f\u7528eval\uff08\uff09\u51fd\u6570\u8f6c\u6362\u540e\uff08\u54ea\u6015\u662f\u591a\u6b21\u8f6c\u6362\uff09\u8fd8\u662fJSON\u5bf9\u8c61\uff0c\u4f46\u662f\u4f7f\u7528parseJSON\uff08\uff09\u51fd\u6570\u5904\u7406\u540e\u4f1a\u6709\u95ee\u9898\uff08\u629b\u51fa\u00a0\u8bed\u6cd5\u00a0\u5f02\u5e38\uff09\u3002<\/p>\n
 <\/p>\n
\u4e8c\u3001JSON\u5bf9\u8c61\u8f6c\u6362\u4e3aJSON\u5b57\u7b26\u4e32<\/h3>\n
\u53ef\u4ee5\u4f7f\u7528toJSONString()\u6216\u8005\u5168\u5c40\u65b9\u6cd5JSON.stringify()\u5c06JSON\u5bf9\u8c61\u8f6c\u5316\u4e3aJSON\u5b57\u7b26\u4e32\u3002<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n
var last=obj.toJSONString(); \/\/\u5c06JSON\u5bf9\u8c61\u8f6c\u5316\u4e3aJSON\u5b57\u7b26<\/pre>\n
 <\/p>\n
\u6216\u8005<\/p>\n
var last=JSON.stringify(obj); \/\/\u5c06JSON\u5bf9\u8c61\u8f6c\u5316\u4e3aJSON\u5b57\u7b26\n\nalert(last);<\/pre>\n
 <\/p>\n
 <\/p>\n
\u6ce8\u610f\uff1a<\/p>\n
\u4e0a\u9762\u7684\u51e0\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u9664\u4e86eval()\u51fd\u6570\u662fjs\u81ea\u5e26\u7684\u4e4b\u5916\uff0c\u5176\u4ed6\u7684\u51e0\u4e2a\u65b9\u6cd5\u90fd\u6765\u81eajson.js\u5305\u3002\u65b0\u7248\u672c\u7684\u00a0JSON\u00a0\u4fee\u6539\u4e86\u00a0API\uff0c\u5c06\u00a0JSON.stringify()\u00a0\u548c\u00a0JSON.parse()\u00a0\u4e24\u4e2a\u65b9\u6cd5\u90fd\u6ce8\u5165\u5230\u4e86\u00a0Javascript\u00a0\u7684\u5185\u5efa\u5bf9\u8c61\u91cc\u9762\uff0c\u524d\u8005\u53d8\u6210\u4e86\u00a0Object.toJSONString()\uff0c\u800c\u540e\u8005\u53d8\u6210\u4e86\u00a0String.parseJSON()\u3002\u5982\u679c\u63d0\u793a\u627e\u4e0d\u5230toJSONString()\u548cparseJSON()\u65b9\u6cd5\uff0c\u5219\u8bf4\u660e\u60a8\u7684json\u5305\u7248\u672c\u592a\u4f4e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u4e2d\uff0cjson\u662f\u4ee5\u6587\u672c\uff0c\u5373\u5b57\u7b26\u4e32\u7684\u5f62\u5f0f\u4f20\u9012\u7684\uff0c\u800cJS\u64cd\u4f5c\u7684\u662fJSON\u5bf9\u8c61\uff0c\u6240\u4ee5\uff0cJSON\u5bf9\u8c61\u548cJS […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-24","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/24","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=24"}],"version-history":[{"count":1,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/24\/revisions"}],"predecessor-version":[{"id":498,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/24\/revisions\/498"}],"wp:attachment":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=24"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}