Question

我需要从复杂的javascript对象中提取字符串属性。

以下是我的情景：

for (var key in results) {
    console.log(results[key]);
        ...results[key] is an object that returns few arrays and properties
            ...i need to capture an array inside named "all_names"
                ...again loop through all the objects in the array "all_names"
                    ...all the objects have a property name called "first_name"
                        ...i need to capture the "first_name" that have the value "Paul"

}

示例数据：

在console.log之后（结果[key]）;
    “all_names”：数组[7]
    地址：“一些地址”
    org_number：“TV146”

然后循环“all_names”
“first_name”：“保罗”
“last_name”：“汉森”

捕捉“保罗”

请帮忙。

Answer 1

只要有数组属性，就可以使用for (var x in arr)和结果一样。如果没有示例对象，请从您的描述中获得：

results[].all_names[].first_name

给出了

for (var key in results)
{
    //...results[key] is an object that returns few arrays and properties
    //...I need to capture an array inside named "all_names"
    //...loop through all the objects in the array "all_names"
    for (var namekey in results[key].all_names)
    {
        // all the objects have a property name called "first_name"
        // ...i need to capture the "first_name" that have the value "Paul"
        if (results[key].all_names[namekey].first_name == 'Paul') {
            // will always be "Paul" 
            console.log(results[key].all_names[namekey].first_name); 

            //perhaps: console.log(key); 
        }
    }
}

Answer 2

for (var key in results) {
    results[key]["all_names"].forEach(function (obj) {
        if (obj["first_name"] === "Paul") {
            // this is Paul
        }
    });
}

在javascript中嵌套for循环

2 个答案: