JS创建自定义事件及触发

版权声明：如需转载请参阅《转载说明》 https://blog.csdn.net/automation13/article/details/78760194

var test1 = document.getElementById('test1');
var event = new Event('build');
test1.addEventListener('build', function(e){console.log('test1')});
test1.dispatchEvent(event)

页面引入这几行js代码，加载完成后浏览器控制台会输出字符串“test1”