这是我清理空字段的解决方案。

从费用对象开始：仅获取可用属性（带贴图）筛选空字段（带筛选器）将结果解析为整数（带映射）

fees.map( ( e ) => e.avail ).filter( v => v!== '').map( i => parseInt( i ) );

试试这个。将数组传递给它，它将返回并删除空元素*更新以解决Jason指出的错误

function removeEmptyElem(ary) {
    for (var i = ary.length - 1; i >= 0; i--) {
        if (ary[i] == undefined)  {
            ary.splice(i, 1);
        }       
    }
    return ary;
}

@阿尔尼塔克

实际上，如果您添加一些额外的代码，Array.filter可以在所有浏览器上运行。见下文。

var array = ["","one",0,"",null,0,1,2,4,"two"];

function isempty(x){
if(x!=="")
    return true;
}
var res = array.filter(isempty);
document.writeln(res.toJSONString());
// gives: ["one",0,null,0,1,2,4,"two"]  

这是您需要为IE添加的代码，但过滤器和函数式编程是值得的。

//This prototype is provided by the Mozilla foundation and
//is distributed under the MIT license.
//http://www.ibiblio.org/pub/Linux/LICENSES/mit.license

if (!Array.prototype.filter)
{
  Array.prototype.filter = function(fun /*, thisp*/)
  {
    var len = this.length;
    if (typeof fun != "function")
      throw new TypeError();

    var res = new Array();
    var thisp = arguments[1];
    for (var i = 0; i < len; i++)
    {
      if (i in this)
      {
        var val = this[i]; // in case fun mutates this
        if (fun.call(thisp, val, i, this))
          res.push(val);
      }
    }

    return res;
  };
}

可以使用带有索引和in运算符的筛选器

设a=[1，，2，，，3]；设b=a.filter（（x，i）=>a中的i）；console.log（｛a，b｝）；

简单ES6

['a','b','',,,'w','b'].filter(v => v);

我需要完成同样的任务，并遇到了这个线程。我最终使用数组“join”使用“_”分隔符创建字符串，然后使用正则表达式：-

1. replace "__" or more with just one "_",
2. replace preceding "_" with nothing "" and similarly 
3. replace and ending "_" with nothing ""

…然后使用数组“拆分”生成一个已清理的数组：-

var myArr = new Array("","","a","b","","c","","","","","","","","","e","");
var myStr = "";

myStr = myArr.join("_");

myStr = myStr.replace(new RegExp(/__*/g),"_");
myStr = myStr.replace(new RegExp(/^_/i),"");
myStr = myStr.replace(new RegExp(/_$/i),"");
myArr = myStr.split("_");

alert("myArr=" + myArr.join(","));

…或1行代码：-

var myArr = new Array("","","a","b","","c","","","","","","","","","e","");

myArr = myArr.join("_").replace(new RegExp(/__*/g),"_").replace(new RegExp(/^_/i),"").replace(new RegExp(/_$/i),"").split("_");

alert("myArr=" + myArr.join(","));

…或，扩展Array对象：-

Array.prototype.clean = function() {
  return this.join("_").replace(new RegExp(/__*/g),"_").replace(new RegExp(/^_/i),"").replace(new RegExp(/_$/i),"").split("_");
};

var myArr = new Array("","","a","b","","c","","","","","","","","","e","");

alert("myArr=" + myArr.clean().join(","));