Array.prototype.pushUnique = function(values)
{
    for (var i=0; i < values.length; i++)
        if (this.indexOf(values[i]) == -1)
            this.push(values[i]);
};

Try:

var array1 = ["Vijendra","Singh"];
var array2 = ["Singh", "Shakya"];
array1.pushUnique(array2);
alert(array1.toString());  // Output: Vijendra,Singh,Shakya

var a = [1,2,3]
var b = [1,2,4,5]

我喜欢一行。这将把不同的b元素推到

b.forEach(item => a.includes(item) ? null : a.push(item));

另一个版本不会修改

var c = a.slice();
b.forEach(item => c.includes(item) ? null : c.push(item));

我的一便士半：

Array.prototype.concat_n_dedupe = function(other_array) {
  return this
    .concat(other_array) // add second
    .reduce(function(uniques, item) { // dedupe all
      if (uniques.indexOf(item) == -1) {
        uniques.push(item);
      }
      return uniques;
    }, []);
};

var array1 = ["Vijendra","Singh"];
var array2 = ["Singh", "Shakya"];

var result = array1.concat_n_dedupe(array2);

console.log(result);

最佳解决方案。。。

您可以直接在浏览器控制台中点击。。。

无重复项

a = [1, 2, 3];
b = [3, 2, 1, "prince"];

a.concat(b.filter(function(el) {
    return a.indexOf(el) === -1;
}));

具有重复项

["prince", "asish", 5].concat(["ravi", 4])

如果你想要没有重复，你可以从这里尝试一个更好的解决方案-大喊代码。

[1, 2, 3].concat([3, 2, 1, "prince"].filter(function(el) {
    return [1, 2, 3].indexOf(el) === -1;
}));

在Chrome浏览器控制台上试用

 f12 > console

输出：

["prince", "asish", 5, "ravi", 4]

[1, 2, 3, "prince"]

const merge（…args）=>（新集合（[].contat（…arg）））

//Array.indexOf was introduced in javascript 1.6 (ECMA-262) 
//We need to implement it explicitly for other browsers, 
if (!Array.prototype.indexOf)
{
  Array.prototype.indexOf = function(elt, from)
  {
    var len = this.length >>> 0;

    for (; from < len; from++)
    {
      if (from in this &&
          this[from] === elt)
        return from;
    }
    return -1;
  };
}
//now, on to the problem

var array1 = ["Vijendra","Singh"];
var array2 = ["Singh", "Shakya"];

var merged = array1.concat(array2);
var t;
for(i = 0; i < merged.length; i++)
  if((t = merged.indexOf(i + 1, merged[i])) != -1)
  {
    merged.splice(t, 1);
    i--;//in case of multiple occurrences
  }

其他浏览器的indexOf方法的实现取自MDC