Forget Password in WordPress

AJAX call in JavaScript

      jQuery('#forgetpassbutton').click(function(e){

        e.preventDefault();

        jQuery.ajax({

            type: 'POST',

            url : code.ajaxurl,

            data: { 

                    'action'        : 'send_forgetpassword_mail',

                    'memberid'      : jQuery('#useremail').val()

            },

            success: function(response){

                responseobj = jQuery.parseJSON(response);

                jQuery('#message').text(responseobj['message']);

            },

            error: function (data) {

            }

        });

      });

Add this function to functions.php

add_action('wp_ajax_send_forgetpassword_mail','send_forgetpassword_mail_callback');

add_action('wp_ajax_nopriv_send_forgetpassword_mail','send_forgetpassword_mail_callback');

function send_forgetpassword_mail_callback(){

	$useremail    = sanitize_text_field($_POST['memberid']);

	$userdetails  = get_user_by(  'email', $useremail );

	$user_id      = $userdetails->data->ID;

	if($userdetails){

		$password    = wp_generate_password(6,true); 

		wp_set_password(  $password,  $user_id );

		$subject      = 'Updated Account Details for psychodramacertification.org'  ;

		$message = '<table>

							<tr><th colspan="2">Updated Account Details</th></tr>

							<tr><td>Login URL</td>:<td>'.site_url('member-login').'</td></tr>

							<tr><td>Username</td>:<td>'.$userdetails->data->user_login.'</td></tr>

							<tr><td>Password</td>:<td>'.$password.'</td></tr>

						</table>';

		$headers = array('Content-Type: text/html; charset=UTF-8','Reply-To: Admin <'.get_option('admin_email').'>','Cc:'.get_option( 'mm_global_email_setting'));

		wp_mail($useremail , $subject, $message, $headers);

	}

	if($password){

	 	echo json_encode(array('flag' => 'success','message' => 'Your new password has been sent to your registered email address.','redirecturl' => '' ));

	}else{

		echo json_encode(array('flag'=>'failure','message'=> 'User account is not activated.' ));

	}

	die; 

}