<a target="_blank" href="https://leetcode.com/problems/first-unique-character-in-a-string/?envType=daily-question&amp;envId=2024-02-05">https://leetcode.com/problems/first-unique-character-in-a-string/?envType=daily-question&amp;envId=2024-02-05</a>
<pre><code class="lang-javascript">/**
 * @param {string} s
 * @return {number}
 */
var firstUniqChar = function (s) {
 const store = {}

 for (let char of s) {
 store[char] = (store[char] || 0) + 1
 }

 for (let [key, val] of Object.entries(store)) {
 if (val === 1) return s.indexOf(key) 
 }

 return -1
};
</code></pre>
I solved this on my own.

[https://leetcode.com/problems/first-unique-character-in-a-string/?envType=daily-question&envId=2024-02-05](https://leetcode.com/problems/first-unique-character-in-a-string/?envType=daily-question&envId=2024-02-05)

```javascript
/**
 * @param {string} s
 * @return {number}
 */
var firstUniqChar = function (s) {
    const store = {}

    for (let char of s) {
        store[char] = (store[char] || 0) + 1
    }
    
    for (let [key, val] of Object.entries(store)) {
        if (val === 1) return s.indexOf(key) 
    }

    return -1
};
```

I solved this on my own.

#387. First Unique Character in a String