function setResult(result) {
    let lbl = `<label class="bg-success">Ответ:${result}</label>`;
    document.getElementById("result").innerHTML = lbl;
}

function add(){
    executeRequest("add");
}

function sub(){
    executeRequest("sub");
}

function mul(){
    executeRequest("mul");
}

function del(){
    executeRequest("del");
}

function enterArray(){
     executeRequestArray("array");
}

function executeRequest(address) {
   let num1 = document.getElementById("addNum1").value;
   let num2 = document.getElementById("addNum2").value;
   console.log("a" + num1 + "b" + num2)
    fetch(`http://localhost:8080/${address}?a=${num1}&b=${num2}`)
        .then(response => {
               return response.json();
           })
           .then(result => {
               setResult(result);
           })
}

function executeRequestArray(address) {
    let array = document.getElementById("enterArray").value;
    fetch(`http://localhost:8080/${address}?InputNumbers=${array}`)
         .then(response => {
                return response.json();
            })
            .then(result => {
                setResult(result);
            })
}