获取语言标识
if (navigator.appName == Netscape ) {
var language = navigator.language.toLowerCase();
} else {
var language = navigator.browserLanguage.toLowerCase();
}

判断语言
var jump = ;
for (var k in list) {
if (language.indexOf(k) > -1) {
jump = list[k];
break;
}
}

var btn = document.getElementById( gotoAMZ );
btn.onclick = function(){
let asin = btn.getAttribute( data-asin );
跳转链接，默认跳转us链接
if (jump == ) {
parent.window.location.href = list.us + asin;
} else {
parent.window.location.href = jump + asin;
}
};