将多个文本框乘以标签，然后将值传递给另一个标签

<input type="text" id="textbox1">
<input type="text" id="textbox2">
<input type="text" id="textbox3">
<label id="result"></label>

var textbox1Value = document.getElementById("textbox1").value;
var textbox2Value = document.getElementById("textbox2").value;
var textbox3Value = document.getElementById("textbox3").value;

var result = textbox1Value * textbox2Value * textbox3Value;

document.getElementById("result").innerHTML = result;