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387. First Unique Character in a String

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	`1`	`+/**`
	`2`	`+ * @param {string} s`
	`3`	`+ * @return {number}`
	`4`	`+ */`
	`5`	`+var firstUniqChar = function (s) {`
	`6`	`+ var arr = s.split("");`
	`7`	`+`
	`8`	`+ var obj = [];`
	`9`	`+ for ([i, e] of arr.entries()) {`
	`10`	`+ var arrItem = obj.find((item) => item.ele === e);`
	`11`	`+ var arrIndex = obj.indexOf(arrItem);`
	`12`	`+ if (arrIndex === -1) {`
	`13`	`+ obj.push({ ele: e, count: 1, index: i });`
	`14`	`+ } else {`
	`15`	`+ obj[arrIndex]["count"] += 1;`
	`16`	`+ }`
	`17`	`+ }`
	`18`	`+ var result = obj.find((item) => item.count === 1);`
	`19`	`+ return result?.index >= 0 ? result?.index : -1;`
	`20`	`+};`
	`21`	`+`
	`22`	`+x = firstUniqChar("aabb");`
	`23`	`+console.log(x);`

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