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Smart Contracts: Dynamically make and fill variables in Javascript by taking informations from HTML to send in MetaMask

As you can see, i am working on smart contracts.
I have a parsing function that when i give an ABI/JSON it is showing up the function with is variable.
Now, i want the informations that getting out from the parsing to sending them to the MetaMask, but i don't know how is proper to get them and i need help with the source code.
I want to have in one variable the function type as it is shown at the picture with the arrow.
And i want making variables name with the names that are shown (_startTime as an example) with the value from the input box that the user will give.

Metamask is a plugin used to execute the transaction. You can also send data with the transaction to the Metamask. To initiate the transaction first you have to login into the Metamask. Later you have to select the Network in the metamask and use Web3 wrapper to execute the transaction. I did that using Truffle and running local blockchain on my PC.

Gigya - complete registration for an auto-generated account

Newbie to gigya. I have been trying to identify how can I achieve complete registration in my web application for an account that is generated using gigya REST api with an auto-generated details. I have the UID for that account, using which I can retrieve the user details.
My questions are:
Is it possible to complete the registration for that account(auto-generated) using the Complete Registration screen set?
If so, how can I achieve the profile completion?

Screen-Sets are client-side, so, there is no way to use the Complete Registration screen inside a REST implementation.
Three possible solutions are:
If you have the data: Include all the necessary data properties in the call to accounts.register.
If you have the data: After registering the user, using the UID call accounts.setAccountInfo and add the necessary data properties.
If you don't have the data: Don't do anything via REST to complete the registration info (and leave it in 'Pending' state setting finalizeRegistration: false in the accounts.register call. This will cause the API to return "errorCode": 206001, "errorMessage": "Account Pending Registration"). Then add the screen-sets to your page/app and when the user attempts to login, any required information that is missing will need to be provided via the Complete Registration screen, which will automatically fire and prompt the user for this data and then finalize the registration.

#sadiqmc could you explain a little bit about what you're trying to do? What's the flow that you're trying to accomplish?
Edit:
As per your flow, you probably shouldn't use the Update Profile screen to let the user change their info, as the auto-generated content will be pre populated and will confuse the user.
Since you already have the UID, you can build a generic form to collect the user's data and then update the account using setAccountInfo.

How can I keep both users tables "synchronized" using BackAnd?

I'm good with registering users, login, etc.
Now I'm getting into modifying users with:
this.backand.object.update('users', user.userId, user)
but I can see that only my table gets modified, while I'll also need to modify the "Registered Users" table existing in "Security & Auth > Registered Users".
I understand I might need to create a custom action...maybe "Before Update"? ...but I can't find documentation on how to modify that specific table (via API or via BackAnd actions).
Thank you.

thanks for using Backand! We don't offer any methods via the SDK to update the registered users. You can use the HTTP object to send a call to the back-end's REST API directly, hitting the same URL that the SDK requests when creating a new user, but this isn't officially documented. In general, we try to limit direct modifications of the registered users table, as there are some security concerns regarding how frequently the data is accessed and modified, but you can access the users object directly via the /users URL. There is an article in our documentation at http://docs.backand.com/en/latest/apidocs/security/index.html#link-your-app-39-s-users-with-backand-39-s-registered-users that covers an automated process for making these kinds of changes - you should be able to adapt some of the server side code in that example to work with your use case.
One alternative that would work now would be to have any change in basic information (username, password, firstname, lastname) result in a new user being created, and you could then use a custom action to perform the migration to the new user, but that is unnecessarily complex. I will add a ticket for our developers to look at adding this registered user management functionality in the future.

Checking if a "distinct_id" already exists in Mixpanel Javascript

Is there a way to check to see if a previous "distinct_id" already exists in Mixpanel with Javascript?
I am currently having an issue where once someone moves through my onboarding process and all the events are tracked, if they log out and log back in it is creating a separate record in the "explore" section of the admin interface.
I want to be able to throw some logic around my initial login event to make sure to check if the "Distinct_id" already has been used, and then tie the login event to that same user instead of creating a brand new one in Mixpanel.

It would be great to see your code, but I can guess the following answer based on my experience:
The first time you create a people profile, you should create it executing mixpanel.alias(YOUR_DISTINCT_ID) instead of mixpanel.identify(). This will associate the mixpanel internal distinct_id with your custom distinct id (for instance: an email address, an username, etc).
Next time the user lands on a different page, you call mixpanel.identify(YOUR_DISTINCT_ID).
Doing so, if the user logs out, and then logs in back, calling mixpanel.identify(YOUR_DISTINCT_ID) will be enough, Mixpanel is going to associate your custom id with the original one avoiding duplicated profiles.

Analytics Tracking of a dynamic page

I am using Google analytics and wish to differentiate between two different cases on the home page, specifically depending on the user being logged in or logged out (similar to facebook).
It was suggested to use a different URL for each page, but I am loathe to do at it involves modifying the website structure and involves needless redirects and complexity.
Is there a way to modify the Google analytics to track this (eg so paths through the site are tracked differently for each case)? I have read about tracking events but I don't think this is correct.

Write out a <meta> tag on the server side if the user is logged in, then check in the js for it and change what is being tracked in the _trackPageview() call?

this may make it look like another webpage but I use this as an onclick event so I don't see why it could be used here some how;
pageTracker._trackPageview('/unauthorised-homepage-viewer');
alternatively use the _setCustomVar method

You could alternatively use custom variables. You'll find the documentation in the Google Analytics help site.
Edit: See especially example 2 under the "Example Use Cases":
For example, if your website offer
users the ability to login, you can
use a custom variable scoped to the
session level for user login status.
In that way, you can segment visits by
those from logged in members versus
anonymous visitors.
pageTracker._setCustomVar(
1, // This custom var is set to slot #1
"User Type", // The name of the custom varaible
"Member", // Sets the value of "User Type" to "Member" or
"Visitor" depending on status
2 // Sets the scope to session-level );
pageTracker._trackPageview();

Google analytics allows you to see content by url, the default in overview, or by title.
You can change dynamically the title of the page.