Learn about the keypress event, including its type, syntax, and properties, code examples, specifications, and browser compatibility.
此方法将指定的监听器注册到eventTarger（目标对象）上，当该对象触发指定的事件时，就会执行事件处理函数。
Learn about the keypress event, including its type, syntax, and properties, code examples, specifications, and browser compatibility.
Learn about the keypress event, including its type, syntax, and properties, code examples, specifications, and browser compatibility.
Learn about the keypress event, including its type, syntax, and properties, code examples, specifications, and browser compatibility.
Learn about the keypress event, including its type, syntax, and properties, code examples, specifications, and browser compatibility.