[新人求助] 如何用正则提取出 gallery: JSON.parse 中的内容，不要头部的（和尾部的）， 就是把 json.loads 拿出来

BASE_DATA.galleryInfo = {
title: '图虫街拍摄影：街拍',
isOriginal: false,
mediaInfo: BASE_DATA.mediaInfo,
gallery: JSON.parse("{\"count\":5,\"sub_images\":[{\"url\":\"http:\\/\\/p3.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261904_tt\",\"width\":797,\"url_list\":[{\"url\":\"http:\\/\\/p3.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261904_tt\"},{\"url\":\"http:\\/\\/pb9.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261904_tt\"},{\"url\":\"http:\\/\\/pb1.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261904_tt\"}],\"uri\":\"origin\\/tuchong.fullscreen\\/22261904_tt\",\"height\":1200},{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261905_tt\",\"width\":1200,\"url_list\":[{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261905_tt\"},{\"url\":\"http:\\/\\/pb3.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261905_tt\"},{\"url\":\"http:\\/\\/pb1.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261905_tt\"}],\"uri\":\"origin\\/tuchong.fullscreen\\/22261905_tt\",\"height\":797},{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261906_tt\",\"width\":1200,\"url_list\":[{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261906_tt\"},{\"url\":\"http:\\/\\/pb3.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261906_tt\"},{\"url\":\"http:\\/\\/pb1.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261906_tt\"}],\"uri\":\"origin\\/tuchong.fullscreen\\/22261906_tt\",\"height\":797},{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261914_tt\",\"width\":1200,\"url_list\":[{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261914_tt\"},{\"url\":\"http:\\/\\/pb3.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261914_tt\"},{\"url\":\"http:\\/\\/pb1.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261914_tt\"}],\"uri\":\"origin\\/tuchong.fullscreen\\/22261914_tt\",\"height\":797},{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261925_tt\",\"width\":1200,\"url_list\":[{\"url\":\"http:\\/\\/p99.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261925_tt\"},{\"url\":\"http:\\/\\/pb3.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261925_tt\"},{\"url\":\"http:\\/\\/pb1.pstatp.com\\/origin\\/tuchong.fullscreen\\/22261925_tt\"}],\"uri\":\"origin\\/tuchong.fullscreen\\/22261925_tt\",\"height\":797}],\"max_img_width\":1200,\"labels\":[\"\\u6444\\u5f71\"],\"sub_abstracts\":[\" \\u6444\\u5f71\\uff1a\\u6df1\\u84dd1970\",\" \",\" \",\" \",\" \"],\"sub_titles\":[\"\\u56fe\\u866b\\u8857\\u62cd\\u6444\\u5f71\\uff1a\\u8857\\u62cd\",\"\\u56fe\\u866b\\u8857\\u62cd\\u6444\\u5f71\\uff1a\\u8857\\u62cd\",\"\\u56fe\\u866b\\u8857\\u62cd\\u6444\\u5f71\\uff1a\\u8857\\u62cd\",\"\\u56fe\\u866b\\u8857\\u62cd\\u6444\\u5f71\\uff1a\\u8857\\u62cd\",\"\\u56fe\\u866b\\u8857\\u62cd\\u6444\\u5f71\\uff1a\\u8857\\u62cd\"]}"),
siblingList: [],
publish_time: '2018-03-10 09:08:40',
group_id: '6531116766146331139',
item_id: '6531116766146331139',
share_url: 'https://m.toutiao.com/group/6531116766146331139/',
abstract: ''.replace(/<br \/>/ig, ''),
repin: 0