我想禁用选择 2 个以上的选择复选框，但我无法使用我的 javascript 代码来做到这一点。我怎样才能做到这一点？
\n\nbtn.addEventListener("click",function () {\nvar ourRequest = new XMLHttpRequest();\n ourRequest.open(\'GET\',\'questions.json\');//json dosyas\xc4\xb1ndan sorular ve s\xc4\xb1klar okunuyor\n ourRequest.onload = function () {\n pos = 0;\n counters = [A=0,B=0,C=0,D=0];\n ourData = JSON.parse(ourRequest.responseText);\n renderQuestion(ourData);\n btn.innerHTML = "BA\xc5\x9eA D\xc3\x96N";\n }\n ourRequest.send();\n})\n\n\nvar renkler = ["Ye\xc5\x9fil","Sar\xc4\xb1","Mavi","K\xc4\xb1rm\xc4\xb1z\xc4\xb1"];\n\nfunction _(x){\nreturn document.getElementById(x);//html dom\n}\nfunction renderQuestion(data){ //soru soran fonksiyon\ntest = _("test"); //dom ile test div ini se\xc3\xa7\nif(pos >= 4){//e\xc4\x9fer pozisyon soru say\xc4\xb1s\xc4\xb1ndan b\xc3\xbcy\xc3\xbckse veya soru say\xc4\xb1s\xc4\xb1na e\xc5\x9fitse\n\n document.getElementById(\'btntest\').style.visibility = "hidden";\n\n for(var i = 0;i<choices.length;i++){test.innerHTML += "<h2>Sonu\xc3\xa7 : "+renkler[i]+" renkli …