javascript - 如何从对象数组中获取元素？

Question

var fkTableArr1d = new Array();

fkTableArr1d = _.map(fkTableArr2d, function(list, iterator, context) {          
      return { "id " : list[0], "label " : list[1] };
    });

fkTableArr1d 变为:[对象，对象，对象]

1 个对象是一个对象 {id : "5", label : "fuel"}

现在我应该如何获取带有标签 fuel 的元素的 ID？

下面的方法不起作用:

console.log(fkTableArr1d['fuel']);

Answer 1

看起来您正在寻找 findWhere() :

Looks through the list and returns the first value that matches all of the key-value pairs listed in properties.

_.findWhere(fkTableArr1d, {label : "fuel"});

演示:http://jsfiddle.net/38qUE/1/