<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <p id="out">Push the button</p> <input id="name"/> <br/> <button onclick="get()">Get</button> <br/> <button onclick="getTest()">Get Test</button> <br/> <button onclick="post()">Post</button> <br/> <button onclick="put()">Put</button> </body> <script> const url = "http://localhost:8080/api"; const out = document.getElementById("out"); const name = document.getElementById("name"); const get = async () => { const res = await fetch(`${url}?name=${name.value}`); const text = await res.text(); out.innerText = text; } const getTest = async () => { const res = await fetch(`${url}/test`); const text = await res.text(); out.innerText = text; } const post = async () => { if (!name.value) { alert("Name is required"); return; } const res = await fetch(url, { method: 'post', headers: {'Content-Type': 'application/json'}, body: name.value }); const text = await res.text(); out.innerText = text; } const put = async () => { if (!name.value) { alert("Name is required"); return; } const res = await fetch(`${url}/${name.value}`, { method: 'put', headers: {'Content-Type': 'application/json'}, body: name.value }); const text = await res.text(); out.innerText = text; } </script> </html>