如何检查json文件中的现有值

Question

app.js

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  var permission = require('./permission.json');

for(i in permission) {
    if(permission[i] == "admin")
      console.log('admin role is present');
}

＆＃13;

＆＃13;

＆＃13;

json文件

＆＃13;

＆＃13;

{
    "admin": {
        "user": {
            "read": true,
            "write": true
        },
        "packages": {
            "read": true,
            "write": true
        }
    }
}

＆＃13;

＆＃13;

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我正在尝试检查json文件中的admin角色。怎么做，有什么建议??

Answer 1

由于你的json中没有数组，你所做的事情是行不通的。而不是'许可[i]'只是使用'我'。 实施例 -

var permission = require('./permission.json');

for(i in permission) {

    //because 'i' already contains the value of the key
    if(i == "admin") 
      console.log('admin role is present');
}