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AngularJs Blocks Form Submit without "action"-In general, AngularJs blocks the form submit, because of empty "Action".
To add new elements you can use the following JavaScript functions: push() unshift(), concat() function or splice(). See examples.
Use PHP empty () function, or count() function to check whether the array is empty or not. See examples.
Learn How to Declare and Initialize an Array in JavaScript.The two most common ways are 1. using the array constructor, 2. using the literal notation.
The most common ways to loop through an array in JavaScript are the for, for/in and while loops. See how to use them. Examples.
Learn how to Remove an Element from an Array in JavaScript by using pop, shift, or splice functions. Try examples yourself and learn with W3docs tutorial.
There are two ways to count items in a filtered AngularJs list used in ngRepeat: to get filter count either in template or in controller. See how to do it.
Learn How to use Angularjs filters. AngularJs lets us create custom filters and use it like you use other filters. Try examples yourself and see the result.