how to check whether the key pressed iis enter code example

Example 1: enter event in jquery

$('#textbox').keypress(function(event){
	var keycode = (event.keyCode ? event.keyCode : event.which);
	if(keycode == '13'){
		alert('You pressed a "enter" key in textbox');
	}
});

Example 2: how to check if enter is pressed javascript

$('#usersearch').keydown(function(e){
    if(e.keyCode === 13){
            alert("Enter was pressed ");
     }  
});