请尝试使用以下代码：

const kumas = document.getElementsByName("kumas");
const kol = document.getElementsByName("kol");
const dugme = document.getElementsByName("dugme");
const arButton = document.querySelector("ar-button");
    
let sources = [[[],[],[],[]],[[],[],[],[]],[[],[],[],[]],[[],[],[],[]]]; /* Fill this with the sources. The first element is if the first option for kumas is selected, the second is for if the second option is selected, etc. The elements inside those elements are for each of the different options for kol, and the elements inside those elements are for each of the different options for dugme. */

function foo() {
    let kumasSelected;
    let kolSelected;
    let dugmeSelected;
    for(let i of kumas) {
        if(i.checked) {
            kumasSelected = kumas.indexOf(i);
        }
    }
    for(let i of kol) {
        if(i.checked) {
            kolSelected = kol.indexOf(i);
        }
    }
    for(let i of dugme) {
        if(i.checked) {
            dugmeSelected = dugme.indexOf(i);
        }
    }
    
    arButton.src = sources[kumasSelected][kolSelected][dugmeSelected];
}

每次要更新源时运行该函数。

null

    <label>
        <input type="radio" id="diffuse" name="kumas" value="textues/kumas/2/pgwfpjp_2K_Albedo.jpg"checked>
        Option1
    </label>

    <label>
        <input type="radio"id="adiffuse" name="kumas" value="textues/kumas/1/oi2veqp_2K_Albedo.jpg">
       Option 2
    </label>

    <label>
        <input type="radio" id="bdiffuse"name="kumas" value="textues/kumas/3/sjfvce3c_2K_Albedo.jpg">
        Option 3
    </label>

    <label>
        <input type="radio" id="cdiffuse"name="kumas" value="textues/kumas/4/sjfvcjzc_2K_Albedo.jpg">
     Option 4
    </label>
    
    
<br><br>




    <label>
        <input type="radio" id="diffuse1" name="kol" value="textues\kol\1\teqbcizc_2K_Albedo.jpg" checked>
        Option 1x
    </label>

    <label>
        <input type="radio" id="adiffuse1" name="kol" value="textues\kol\2\tfjbderc_2K_Albedo.jpg">
       Option 2x
    </label>

    <label>
        <input type="radio" id="bdiffuse1"name="kol" value="textues\kol\3\tcnodi3c_2K_Albedo.jpg">
        Option 3x
    </label>

    <label>
        <input type="radio" id="cdiffuse1"name="kol" value="textues\kol\4\tcicdebc_2K_Albedo.jpg">
      Option 4x
    </label>


</div>

</div>

</div>



<br><br>

    <label>
        <input type="radio" id="diffuse2" name="dugme" value="textues\metal\1\scksebop_2K_Albedo.jpg"  checked>
       Option 1z
    </label>

    <label>
        <input type="radio" id="adiffuse2" name="dugme" value="textues\metal\2\se4objgc_2K_Albedo.jpg">
       Option 2z
    </label>

    <label>
        <input type="radio" id="bdiffuse2"name="dugme" value="textues\metal\3\se4pcbbc_2K_Albedo.jpg">
        Option 3z
    </label>

    <label>
        <input type="radio" id="cdiffuse2"name="dugme" value="textues\metal\4\shkxcgfc_2K_Albedo.jpg">
     Option 4z
    </label>


<br><br>
    
    
<ar-button

src="https://basebros.com/models/ar_base_tekli_koltuk_3d.glb"


title="3D-AR by BASE">

<img class="arbuttonicon" src="Assets/evindebutton.png" width="170px" alt="AR-icon">

</ar-button>  



<script>

const kumas = document.getElementsByName("kumas");
const kol = document.getElementsByName("kol");
const dugme = document.getElementsByName("dugme");
const arButton = document.querySelector("ar-button");
    
let sources = [[["https://basebros.com/models/ar_base_ayakkabi.glb"],["https://basebros.com/models/ar_base_camasir_makinesi_3d.glb"],["https://basebros.com/models/ar_base_kahve_makinesi_3d.glb"],["https://basebros.com/models/ar_base_nintendo.glb"]],[[],[],[],[]],[[],[],[],[]],[[],[],[],[]]]; /* Fill this with the sources. The first element is if the first option for kumas is selected, the second is for if the second option is selected, etc. The elements inside those elements are for each of the different options for kol, and the elements inside those elements are for each of the different options for dugme. */

function foo() {
    let kumasSelected;
    let kolSelected;
    let dugmeSelected;
    for(let i of kumas) {
        if(i.checked) {
            kumasSelected = kumas.indexOf(i);
        }
    }
    for(let i of kol) {
        if(i.checked) {
            kolSelected = kol.indexOf(i);
        }
    }
    for(let i of dugme) {
        if(i.checked) {
            dugmeSelected = dugme.indexOf(i);
        }
    }
    
    arButton.src = sources[kumasSelected][kolSelected][dugmeSelected];
}
</script>