bootstrap 4 text boxe validator code example

Example 1: bootstrap forms

  

    Email address
    
    We'll never share your email with anyone else.
  
  

    Password
    
  
  

    
    Check me out
  
  Submit

Example 2: check if form bootstrap is valid js

function form_validate(attr_id){
    var result = true;
    $('#'+attr_id).validator('validate');
    $('#'+attr_id+' .form-group').each(function(){
        if($(this).hasClass('has-error')){
            result = false;
            return false;
        }
    });
    return result;
}