"{"A":"5","B":"4","C":"3","D":"2"}"分别取出ABCD

weixin_30515513

于 2017-10-12 08:58:00 发布

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原文链接：http://www.cnblogs.com/gxivwshjj/p/7654481.html

本文介绍了一种使用JavaScript从JSON字符串中提取键名和对应的值的方法。通过正则表达式匹配与字符串切片操作相结合的方式，实现了对JSON字符串的有效解析。

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转自 https://segmentfault.com/q/1010000007144114/a-1020000007144741

取键

'{"A":"5","B":"4","C":"3","D":"2"}'.match(/"\w+"\:/g).map(function(el){return el.slice(1,-2)})


["A", "B", "C", "D"]

取值

'{"A":"5","B":"4","C":"3","D":"2"}'.replace(/(?:"[^"]+":)|["{}]/g,'').split(',')
["5", "4", "3", "2"]

str = '{"A":"5","B":"4","C":"3","D":"2"}';
str.split(/(?:^\{|",)"[^"]+":"|"\}$/g).slice(1,-1)
["5", "4", "3", "2"]

str.split(/[{"][^:]+:"|"\}/g).slice(1,-1)
["5", "4", "3", "2"]

转载于:https://www.cnblogs.com/gxivwshjj/p/7654481.html