这个问题在这里已有答案：
我正在尝试使用JavaScript从多维对象中获取值。我尝试过.filter，但它似乎只在数组上工作。此外，我几乎用UnderscoreJS的_where做了它，但它只适用于非多维对象。它甚至可能，或者我必须重建我的对象？我会感激任何提示...请帮助：'（
代码（https://jsfiddle.net/ob58fye2/）：
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
var configurators = JSON.parse('{"ConfiguredItems":{"OtapiConfiguredItem":[{"Id":"3667395302656","Quantity":"2981","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"3224419"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}},{"Id":"3667395302655","Quantity":"4145","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"129819"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}},{"Id":"3667395302654","Quantity":"0","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"80557"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}}]}}');
function FindConfigurator(pid, vid) {
var id = null;
//
console.log(configurators); // Returns the configurators.
console.log(id); // Should return `3667395302656`.
}
FindConfigurator(1627207, 3224419);
</script>
</head>
</html>
您可以循环到JSON数组并获得所需的结果。
var configurators = JSON.parse('{"ConfiguredItems":{"OtapiConfiguredItem":[{"Id":"3667395302656","Quantity":"2981","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"3224419"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}},{"Id":"3667395302655","Quantity":"4145","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"129819"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}},{"Id":"3667395302654","Quantity":"0","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"80557"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}}]}}');
function FindConfigurator(pid, vid) {
var id = null;
configurators.ConfiguredItems.OtapiConfiguredItem.forEach(
(OtapiConfiguredObj)=>{
OtapiConfiguredObj.Configurators.ValuedConfigurator.forEach(
(ValuedConfiguratorObj)=>{
if(ValuedConfiguratorObj['@attributes'].Pid === pid.toString() && ValuedConfiguratorObj['@attributes'].Vid === vid.toString()){
id = OtapiConfiguredObj.Id;
}
});
});
console.log(configurators); // Returns the configurators.
console.log(id); // Should return `3667395302656`.
}
FindConfigurator(1627207, 3224419);因为，你不能在break中添加一个forEach语句，你可以有一个通用循环来这样做，这样当找到匹配时，循环就会被破坏。
var configurators = JSON.parse('{"ConfiguredItems":{"OtapiConfiguredItem":[{"Id":"3667395302656","Quantity":"2981","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"3224419"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}},{"Id":"3667395302655","Quantity":"4145","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"129819"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}},{"Id":"3667395302654","Quantity":"0","Configurators":{"ValuedConfigurator":[{"@attributes":{"Pid":"1627207","Vid":"80557"}},{"@attributes":{"Pid":"20509","Vid":"28383"}}]}}]}}');
function FindConfigurator(pid, vid) {
var id = null;
for(var i=0; i<configurators.ConfiguredItems.OtapiConfiguredItem.length; i++){
var OtapiConfiguredObj = configurators.ConfiguredItems.OtapiConfiguredItem[i];
for(var j=0; j< OtapiConfiguredObj.Configurators.ValuedConfigurator.length; j++) {
var ValuedConfiguratorObj = OtapiConfiguredObj.Configurators.ValuedConfigurator[j];
if(ValuedConfiguratorObj['@attributes'].Pid === pid.toString() && ValuedConfiguratorObj['@attributes'].Vid === vid.toString()){
id = OtapiConfiguredObj.Id;
break;
}
}
if(id){break;}
}
console.log(configurators); // Returns the configurators.
console.log(id); // Should return `3667395302656`.
}
FindConfigurator(1627207, 3224419);