code: function argnanmin( arr ) {
  	if ( !Array.isArray( arr ) ) {
  		throw new TypeError( 'argnanmin()::invalid input argument. Must provide an array.' );
  	}
  	var len = arr.length,
  		min = Number.POSITIVE_INFINITY,
  		idx = [],
  		val;
  
  	for ( var i = 0; i < len; i++ ) {
  		val = arr[ i ];
  		if ( typeof val !== 'number' || val !== val ) {
  			continue;
  		}
  		if ( val < min ) {
  			min = val;
  			idx.length = 0;
  			idx.push( i );
  		}
  		else if ( val === min ) {
  			idx.push( i );
  		}
  	}
  	return idx;
  }
docs: FUNCTION: argnanmin( arr )
  Computes the minimum value of an array ignoring non-numeric values and returns the corresponding array indices.
  
  @param {Array} arr - array of values
  @returns {Array} array indices