How to use require field in bootstrap form?

by skybers
Today I will tell you how to use require field in your form.
First of all I will tell your what is require field? Require field is whenever I will require tag in our input field and finally hit at submit button, if your input field is not fill up you cant go ahead. A tooltip will show below your input field where will write (Please fill in this field)
<form> <input type="text" required="required"> <button>Submit</button> </form>
Please see the image below. It will look like same, when you hit at submit button.
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