JavaScript - How to use variable as key?

Question

I am very new to JavaScript and read some questions about the topic but none of them gave me a solution to my problem.

I want to change user data in Active Directory, so I use ldapjs. There is a method to change a property of a user.

   client.modify(
          user['dn'],
          [new ldap.Change({
              operation: 'replace',
              modification: {
                _var_: u['st']
              }})]);

When I know the key (_var_)I want to set, this works perfectly. But I got an object that contains any to be changed key-value pairs. Something like u = { sn: 'test', l: 'test', st: 'test'}; Now I want to iterate over all properties of u and modify the related properties of user (in AD). Is there a way to set the _var_ key in modification dynamically to fit the actual key of u (sn, l, st)?

@zola var should be 'sn' in the first iteration 'l' in the second, ... — Kinaeh
– Kinaeh, Commented Jan 31, 2018 at 13:29

xlecoustillier · Accepted Answer · 2018-02-09 08:08:40Z

1

Is this what you're looking for ? Provided that _var_ contains a string.

var modification = {};
modification[_var_]=u['st'];
client.modify(
      user['dn'],
      [new ldap.Change({
          operation: 'replace',
          modification: modification})]);

So using your u object:

for(var k in u){
    modification[k]=u[k];
}

See this fiddle.

edited Feb 9, 2018 at 8:08

answered Jan 31, 2018 at 13:25

xlecoustillier

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7 Comments

Kinaeh Over a year ago

why do I use 'modification: modification'? wouldn't it work with just 'modification'?

xlecoustillier Over a year ago

The first 'modification' is the key in your object, the second is the variable you created 2 lines above.

Kinaeh Over a year ago

wouldn't it just try to change a field called 'modification' in AD-user?

xlecoustillier Over a year ago

As far as I understand the changeJS API, no.

Dmitry Over a year ago

wouldn't it work with just 'modification'?- it would depending on your nodejs version. It's new ES6 shorthand syntax. E.g.: let a = 5; let b = {a};, b is {a:5} now. Works fine on my nodejs 7.10.1

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