Angularjs array determines the instance code of an element

This article mainly shares with you an example of how to determine whether an angularjs array contains an element, that is, the in_array function, which determines whether an array contains an element.

  Array.prototype.in_array = function(e)
  {
    for(i=0;i<this.length;i++)
    {
      if(this[i] == e)
        return true;
    }
    return false;
  }

Usage:

tmp.in_array(id)

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