Convert array to object, each element of array is as a key in object, and ignores the non-string elements.

objectify.js

var util = require('util');

/**
 * Convert array to object,
 * each element of array is as key in object,
 * and ignores the non-string elements.
 *
 * @example
 *  [ 'a', 'b', 'c' ] => { 'a':1, 'b':1, 'c':1 }
 *
 * @param arr{Array}
 * @returns {Object}
 */

function objectify(arr) {
	var s = {}, x;
	if (util.isArray(arr)) {
		for (var i = 0; i < arr.length; i++) {
			x = arr[i];
			if ('string' == typeof(x)) {
				s[x] = 1;
			};
		};
	};
	return s;
};

//test
//console.log(objectify(['a', 'b', 'c']));

module.exports = objectify;