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ng-class is the Angular directive used to apply class on the elements based upon the evaluated expression.The expression ", checks the validation on first Name using $invalid and $dirty. Since we have several validation checks on element, we need to display corresponding error messages e.g.Normally you would modify this so that you could submit or not submit the form based on the number of items selected. For example, a text input that only needs to have a value if a checkbox is checked: Using simple logical operators and the functions supplied above you can do all sorts of client-side form validation.To take things a step further you can even explore Ajax Form Validation which lets you supply real-time feedback using server-side scripts triggered by Java Script events.In other words if the first condition fails, the second condition will not be tested and so forth.Only when all conditions have been satisfied do we reach the command, in which case the form will be submitted.The team at have made a video based on this article as a part of their Java Script training lessons which you can view below.

var attempt = 3; //Variable to count number of attempts ............ Element By Id("username").disabled = true; Element By Id("password").disabled = true; Element By Id("submit").disabled = true; return false; } } }/* Below line is used for online Google font */ @import url(

I've coded a working form, all checks are great but for some reason the hardest part is trying to stop form submission before validation.

So i have places to insert the stop validation code, but just cant find any that works.

Radio buttons are implemented as if they were an array of checkboxes.

To find out which value (if any) has been selected, you need to loop through the array until you find which one has been selected: In the case of a single radio button we have nothing to loop through so just return either it's value, if the radio button is checked, or false.

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