Protect against HTML changes without blocking the browser console

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Good morning, how do I prevent the user from entering the html element and modifying it? May example:

Return a value to screen and feed it within an input called itemSweet, then the user can use the quantity field to enter a quantity he wants to order which has to be <= to the itemSweed field.

I know I can handle this directly at the bank, but is there any way to handle it on screen?

Without me having to block the browser console.

javascript jquery html5 web-application

1 answer

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Does not. All that rotate in the browser can be changed by the user.

The treatments in client-side serve to improve the usability of the application, you can never fully rely on them, always make the validations on server-side.

  • I understood, so there is no location that I can "save" the return of the server-side and that is not accessed by the user?

  • It doesn’t exist. You can encrypt or make some scheme difficult, but then it’s another matter. What comes from the server can be changed by the client at all times.

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