To solve the "Cannot read property 'innerHTML' of null" error, make sure you're using the correct id. The error often occurs when calling the `getElementById` method with an incorrect `id`.

Solve - Cannot read property 'innerHTML' of Null in JS

## Solve - Cannot read property 'innerHTML' of Null

**The "Cannot read property 'innerHTML' of null" error occurs for 2 reasons:**

1. Accessing the `innerHTML` property on a `null` value - a DOM element that
   doesn't exist.
2. Placing the JS script tag above the HTML, where the DOM elements are created.

```javascript:index.js
const box = document.getElementById('does-not-exist');
console.log(box); // 👉️ null

// ⛔️ Cannot read properties of null (reading 'innerHTML')
const text = box.innerHTML;
```

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**To solve the "Cannot read property 'innerHTML' of null" error, make sure
you're using the correct id. The error often occurs when calling the
`getElementById` method with an incorrect `id`.**

```html:index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
  </head>
  <body>
    
    <div id="box">Box</div>

    <script src="index.js"></script>
  </body>
</html>
```

**To solve the "Cannot read property 'innerHTML' of null" error, insert the JS
script tag at the bottom of the body tag. The JS script should be ran after the
DOM elements are created.**

```html:index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
  </head>
  <body>
    
    <script src="index.js"></script>

    <div id="box">Box</div>
  </body>
</html>
```

Notice that the `index.js` script is executed before the `div` element is
created. This means that you can't access the `div` inside of the `js` file.

```javascript:index.js
const box = document.getElementById('box');
console.log(box); // 👉️ null

// ⛔️ Cannot read properties of null (reading 'innerHTML')
const text = box.innerHTML;
```

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You should place the JS script tag at the bottom of the body, after the DOM
elements have been declared.

```html:index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
  </head>
  <body>
    <div id="box">Box</div>

    
    <script src="index.js"></script>
  </body>
</html>
```

Now the `index.js` file has access to the `div` element.

```javascript:index.js
const box = document.getElementById('box');
console.log(box); // 👉️ div#box

// ✅ Works
const text = box.innerHTML;
console.log(text); // 👉️ "Box"
```

## Conclusion

The "Cannot read property 'innerHTML' of null" error occurs when accessing the
`innerHTML` property on a `null` value.

To solve the error, make sure the JS script tag is loaded after the DOM elements
are declared and you're using an existing identifier to get the element.

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Solve - Cannot read property 'innerHTML' of Null in JS

Solve - Cannot read property 'innerHTML' of Null #

Conclusion #

Borislav Hadzhiev

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Solve - Cannot read property 'innerHTML' of Null in JS