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67
index.html
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<!DOCTYPE html>
<html lang="ru-ru">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Vite App</title>
</head>
<body>
<div class="container-sm p-3">
<form id="plus">
<h2 class="text-center mb-3">Plus</h2>
<div class="mb-3">
<div class="input-group mb-1">
<input id="value1plus" type="number" class="form-control" placeholder="V1" aria-label="First Number" name="v1" autocomplete="off">
<span class="input-group-text">+</span>
<input id ="value2plus" type="number" class="form-control" placeholder="V2" aria-label="Second Number" name="v2" autocomplete="off">
<span class="input-group-text" id="plus_result">0</span>
<button id = "buttonplus" type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</form>
<form id="minus">
<h2 class="text-center mb-3">Minus</h2>
<div class="mb-3">
<div class="input-group mb-1">
<input id = "value1minus" type="number" class="form-control" placeholder="V1" aria-label="First Number" name="v1" autocomplete="off">
<span class="input-group-text">-</span>
<input id = "value2minus" type="number" class="form-control" placeholder="V2" aria-label="Second Number" name="v2" autocomplete="off">
<span class="input-group-text" id="minus_result">0</span>
<button id = "buttonminus" type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</form>
<form id="mult">
<h2 class="text-center mb-3">Mult</h2>
<div class="mb-3">
<div class="input-group mb-1">
<input id = "value1mult" type="number" class="form-control" placeholder="V1" aria-label="First Number" name="v1" autocomplete="off">
<span class="input-group-text">*</span>
<input id = "value2mult" type="number" class="form-control" placeholder="V2" aria-label="Second Number" name="v2" autocomplete="off">
<span class="input-group-text" id="mult_result">0</span>
<button id = "buttonmult" type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</form>
<form id="div">
<h2 class="text-center mb-3">Del</h2>
<div class="mb-3">
<div class="input-group mb-1">
<input id="value1div" type="number" class="form-control" placeholder="V1" aria-label="First Number" name="v1" autocomplete="off">
<span class="input-group-text">/</span>
<input id = "value2div" type="number" class="form-control" placeholder="V2" aria-label="Second Number" name="v2" autocomplete="off">
<span class="input-group-text" id="div_result">0</span>
<button id = "buttondiv" type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</form>
</div>
<script type="module" src="main.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
</body>
</html>

27
main.js
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const xhr = new XMLHttpRequest ()
const get = (operation, value1, value2) =>{
return new Promise((resolve, reject) => {
xhr.open('GET', `http://localhost:8080/${operation}?val1=${value1}&val2=${value2}`)
xhr.onload = () => {
if(xhr.status == 200) resolve(xhr.response)
else reject(xhr.response)
}
xhr.send()
})
}
document.querySelectorAll("form").forEach((item) => {
item.onsubmit = async (e) => {
e.preventDefault();
const form = e.target;
const val1 = form.v1.value;
const val2 = form.v2.value;
const responce = await get(form.id, val1, val2);
document.getElementById(`${form.id}_result`).innerHTML = responce;
}
})

35
src/main/java/com/example/demo/Controller/Controllers.java
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package com.example.demo.Controller;
import org.springframework.web.bind.annotation.*;
@RestController
@CrossOrigin
public class Controllers {
@GetMapping("/plus")
public @ResponseBody Integer Plus (@RequestParam (required = false, defaultValue = "0") int val1,
@RequestParam (required = false, defaultValue = "0") int val2){
return val1 + val2;
}
@GetMapping("/minus")
public @ResponseBody Integer Minus (@RequestParam (required = false, defaultValue = "0") int val1,
@RequestParam (required = false, defaultValue = "0") int val2){
return val1 - val2;
}
@GetMapping("/mult")
public @ResponseBody Integer Mult (@RequestParam (required = false, defaultValue = "0") int val1,
@RequestParam (required = false, defaultValue = "0") int val2){
return val1 * val2;
}
@GetMapping("/div")
public @ResponseBody Integer Div (@RequestParam (required = false, defaultValue = "0") int val1,
@RequestParam (required = false, defaultValue = "1") int val2){
return val1 / val2;
}
}

17
src/main/java/com/example/demo/Controller/Main.java Normal file
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package com.example.demo.Controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
@Controller
public class Main {
@GetMapping
public String helloWorld(@RequestParam(name = "name", required = false, defaultValue = "World") String name, Model model){
model.addAttribute( "name", name);
return "hello-world!";
}
}