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JavaScript method to merge two arrays and remove duplicates_javascript tips

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Release： 2016-05-16 15:55:13
Original
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The example in this article describes how to merge two arrays and remove duplicates using JavaScript. Share it with everyone for your reference. The specific implementation method is as follows: 

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

I hope this article will be helpful to everyone’s JavaScript programming design.

Related labels：
javascript merge array
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