无法从函数内部的用户输入中获取值

<input type="text" id="inputField">
<button onclick="getValue()">获取值</button>

<script>
function getValue() {
  var inputValue = document.getElementById("inputField").value;
  console.log(inputValue);
}
</script>

const express = require('express');
const app = express();

app.use(express.urlencoded({ extended: true }));

app.post('/getData', (req, res) => {
  const inputValue = req.body.inputField;
  console.log(inputValue);
  res.send('Data received');
});

app.listen(3000, () => {
  console.log('Server started on port 3000');
});

SELECT * FROM users WHERE username = 'inputValue';

location / {
  proxy_pass http://backend/$arg_inputValue;
}

apiVersion: v1
kind: ConfigMap
metadata:
  name: my-config
data:
  inputValue: "example"

import socket

server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind(('localhost', 1234))
server_socket.listen(1)

while True:
    client_socket, addr = server_socket.accept()
    data = client_socket.recv(1024).decode()
    print(data)
    client_socket.close()

ffmpeg -i input.mp4 -vf "scale=640:480" output.mp4

import tensorflow as tf

input_value = tf.placeholder(tf.float32, shape=[None, 784])

int inputValue = analogRead(A0);

EditText inputField = findViewById(R.id.inputField);
String inputValue = inputField.getText().toString();

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Main {
    public static void main(String[] args) {
        try (BufferedReader br = new BufferedReader(new FileReader("input.txt"))) {
            String inputValue = br.readLine();
            System.out.println(inputValue);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

contract MyContract {
    function getValue() public view returns (uint) {
        return inputValue;
    }
}

string inputValue = InputField.text;
Debug.Log(inputValue);