我正在尝试学习Javascript中函数的工作原理.这应该是输出用户消息的函数.当我点击我的3个按钮时没有任何反应.我究竟做错了什么？多谢你们.
function buttonReport(buttonId, buttonName, buttonValue) {
var userMessage1 = "Button id: " + buttonId + "\n";
var userMessage2 = "Button name: " + buttonName + "\n";
var userMessage3 = "Button Value: " + buttonValue + "\n";
}<input type="button" id="id1" name="Left Hand Button" value="Left" onclick="buttonReport(this.id, this.name, this.value)"/>
<input type="button" id="id1" name="Center Button" value="Center" onclick="buttonReport(this.id, this.name, this.value)"/>
<input type="button" id="id1" name="Right Hand Button" value="Right" onclick="buttonReport(this.id, this.name, this.value)"/>