JavaScript 代码优化：使用三元运算符简化条件语句

"hhhg.onchange=function (){\n if(hhhg.value=="saab"){\n jsonList.style.display="none";\n jsonLutl.style.display="block";\n jsonLurl.style.display="none";\n }else if(hhhg.value=="opel"){\n jsonList.style.display="none";\n jsonLutl.style.display="none";\n jsonLurl.style.display="block";\n }else{\n jsonList.style.display="block";\n jsonLutl.style.display="none";\n jsonLurl.style.display="none";\n }\n }化简代码内容：hhhg.onchange=function (){\n jsonList.style.display = hhhg.value=="saab" ? "none" : "block";\n jsonLutl.style.display = hhhg.value=="saab" ? "block" : "none";\n jsonLurl.style.display = hhhg.value=="opel" ? "block" : "none";\n}