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根据路径获取json对象的值 忽略异常返回值友好
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| function getValueByPath(obj, path){ | |
| (path+"").replace(/[^.:]+/g,function(n){ | |
| obj = (obj!=void 0 && (typeof obj=="object" || typeof obj=="function") && n in obj) ? obj[n] : void 0; | |
| }); | |
| return obj; | |
| } | |
| // getValueByPath({a:[{c:"r"}]}, "a.0.c"); // r |
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