Consider the code I have:
var g = document.getElementById("al").value;
function start() {
document.getElementById("test2").innerHTML = typeof(g) + parseFloat(g);
}
<p id="test2">输出在这里：</p> <form> <label for="g">a:</label> <input type="number" id="al" name="g" placeholder="输入a" value="55"> <button onclick="start()" type="button">这里</button> </form>
When I click the button, the output I get is string55, no matter what the user inputs. I want to fix it and replace the 55 with the user's actual input. So what's the fix?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
You need to get the value from the function:
function start() { var g = document.getElementById("al").value; document.getElementById("test2").innerHTML = typeof(g) + parseFloat(g); }