javascript - 从某些元素中排除按键

Question

我想捕获空格键，下面确实捕获了它。然而它与文档相关联，即使我在输入框中键入内容时按空格键，捕获也会触发。如何排除？

$(document).keypress(function(e) {
    if(e.which == 32) {
        alert('trigger');
    }
});

Answer 1

您可以使用nodeName来捕获事件源: http://jsfiddle.net/t8jqb2rq/

//Array of sources you want to include
var includeIn = ['BODY','TEXTAREA'];
$(document).keypress(function(e) {
    if(e.which == 32 && includeIn.indexOf(e.target.nodeName) != -1) {
        alert('trigger');
    }

 });