如何将对象的空属性拼接成数组？

Question

所以我有一个对象数组,我想在它为空时切片对象的属性.

例如:

var quotes = [
{
    quote: "Bolshevism is not a policy; it is a disease. It is not a creed; it is a pestilence.",
    source: "Winston Churchill",
    citation: "",
    year: "29 May 1919",
    place: ""
},
{
    quote: "Learn while you live",
    source: "",
    citation: "X",
    year: "1950",
    place: ""
}];

我有一个对象列表,对象名称随机为空.

我想打印到页面只有非空的属性.

所以我试图遍历对象以找到indexOf()空属性并拼接它:

function findEmptyProp(quotes) {
   for (prop in quotes) {
     if(quotes[i].children === '') {
        return indexOf(quotes[i]);
        quotes.splice(i, 1);
}}}

谢谢你的帮助

Answer 1

splice用于数组,但是当你处理对象时,你必须使用delete.

你可以尝试这样的事情:

var quotes = [{
  quote: "Bolshevism is not a policy; it is a disease. It is not a creed; it is a pestilence.",
  source: "Wyston Churchill",
  citation: "",
  year: "29 May 1919",
  place: ""
}, {
  quote: "Learn while you live",
  source: "",
  citation: "X",
  year: "1950",
  place: ""
}];

quotes.forEach(function(o){
  for (var k in o){
    if(o.hasOwnProperty(k) && isEmpty(o[k])){
      delete o[k];
    }
  }
});

function isEmpty(val){
  return val === undefined || 
    val === null || 
    (typeof(val) === "object" && Object.keys(val).length === 0) || 
    (typeof(val) === "string" && val.trim().length === 0)
}

console.log(quotes)

正如deceze评论的那样,我已经为其他可以认为值为空的情况添加了处理.您还应该检查hasOwnProperty更新自身的属性.