如何对象数组值组合成1阵列？ [英] How to combine object array values into 1 array?

问题描述

我有包含标记阵列中的每个对象的数据对象，我想通过对象循环并抓住每一个对象标签，并结合最终结合值进入1阵列名为环路完成选。目前，然而我无法解决这个问题，我已经试过推标签到一个数组，然后使用下划线_.union方法还尝试以串联每个环形阵列为1，但没有成功。谁能推荐一个解决方案？

小提琴： http://jsfiddle.net/24​​qh7zfv/3/

JS

  VAR的选择= [];VAR数据=（
    {
        角色：开发者，
        标签：开发商，
        标签：[使用Javascript，CSS，HTML]
    }，{
        角色：制片人，
        标签：生产者，
        标签：项目管理，投球，结算]
    }
]）;
对于（VAR I = 0，LEN = data.length; I＆LT; LEN，我++）{
    selection.concat（数据[I] .tags添加）;
}的console.log（选择）;
 

解决方案

您需要重新选和CONCAT到寿了。所以使用：

 为（VAR I = 0，LEN = data.length; I＆LT; LEN，我++）{
    选择= selection.concat（数据[I] .tags添加）;
}
 

I have a data object with each object containing a tags array, I would like to loop through the object and grab each of the object tags and combine eventually combine the values into 1 array called selections on completion of the loop. At the moment however I'm unable to solve this, I have tried pushing the tags into an array then use the underscore _.union method and also tries concatenating each looped array into 1 but with no success. Can anyone recommend a solution?

Fiddle: http://jsfiddle.net/24qh7zfv/3/

JS

var selection = [];

var data = ([
    {
        role: "Developer",
        tag: "developer",
        tags: ["Javascript", "CSS", "HTML"] 
    }, {
        role: "Producer",
        tag: "producer",
        tags: ["Project Management", "Pitching", "Billing"] 
    }
]);


for( var i = 0, len = data.length; i < len; i++ ) {
    selection.concat(data[i].tags);
}

console.log(selection);

解决方案

You need to reassign selection, and concat to tho that. so use:

for( var i = 0, len = data.length; i < len; i++ ) {
    selection = selection.concat(data[i].tags);
}

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