JS禁止Enter回车事件方法

JavaScript

document.onkeydown = function(e) {
	var ev = (typeof event!= \'undefined\') ? window.event : e;
	if(ev.keyCode == 13) {
		return false;
	}
}

JQuery

$(window).keydown( function(e) {
    var key = window.event?e.keyCode:e.which;
    if(key.toString() == \"13\"){
    	return false;
    }
}