JSON from TypeScript and JSON.stringify

Question

Given this simplified scenario:

export class LoginComponent{ 
   grant_type: string="password"; 
   jsonPayload: string; 

   Login(username, password){
      this.jsonPayload = JSON.stringify(username, password, this.grant_type);
   }
}

It looks like stringify is confused by TypeScript's "this". So, how do I make well-formed JSON, here?

Thanks,

T.J. Crowder · Accepted Answer · 2016-01-01 16:38:20Z

3

stringify accepts three arguments, which are:

The thing to stringify
The replacer function to use
The indentation to use

You're passing it a non-function (password) as the second argument.

You probably mean to pass it one argument, an object to stringify:

this.jsonPayload = JSON.stringify({
    username,
    password, 
    grant_type: this.grant_type
});

or if you want to be explicit with all three since the last one needs it:

this.jsonPayload = JSON.stringify({
    username: username,
    password: password, 
    grant_type: this.grant_type
});

edited Jan 1, 2016 at 16:38

answered Jan 1, 2016 at 16:26

T.J. Crowder

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1 Comment

LargeDachshund Over a year ago

Thanks, T.J.! I've got well-formed JSON, now. Only need to fix a niggling preflight bug...

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