JavaScript合并两个数组并去除重复项的方法

Array.prototype.unique = function() {var a = this.concat();for(var i=0; ifor(var j=i+1; jif(a[i] === a[j])a.splice(j, 1);}}return a;};//Demovar array1 = ["a","b"];var array2 = ["b", "c"];var array3 = array1.concat(array2).unique();