` with the id of “app”.
Next, you created a script tag to input your React code. You used ReactDOM.render() method that takes two arguments. The “what” of the React content, in this case your JSX, and the second argument is the “where” that you want to insert the React content into the DOM. In this case it is the location with the id of “app”.
-As an alternative to JSX, you can use ES6 and Javascript's compiler like Babel. [https://babeljs.io/](https://babeljs.io/)
+As an alternative to JSX, you can use ES6 and JavaScript's compiler like Babel. [https://babeljs.io/](https://babeljs.io/)
### More Information:
diff --git a/guide/english/react/why-react/index.md b/guide/english/react/why-react/index.md
index 6226f03056..214ef3d894 100644
--- a/guide/english/react/why-react/index.md
+++ b/guide/english/react/why-react/index.md
@@ -5,7 +5,7 @@ title: Why React
# Why React.js?
## Simplicity
-React.js is not a full fledged Javascript framework like Angular.js or other popular frontend frameworks. Instead, React.js is a JavaScript library that acts as the 'V' in MVC (Model View Controller). It is simply a view engine that can be dropped in and used with a plethora of other tools for the data and model part of MVC (most popularly Redux and Node.js).
+React.js is not a full fledged JavaScript framework like Angular.js or other popular frontend frameworks. Instead, React.js is a JavaScript library that acts as the 'V' in MVC (Model View Controller). It is simply a view engine that can be dropped in and used with a plethora of other tools for the data and model part of MVC (most popularly Redux and Node.js).
## Reusability
React allows you to create reusable components that you can modify with props. This gives a lot of flexibility in development and speeds it up by huge margins.
diff --git a/guide/english/ruby/ruby-on-rails/index.md b/guide/english/ruby/ruby-on-rails/index.md
index c1a56b8b24..0d253b96ff 100644
--- a/guide/english/ruby/ruby-on-rails/index.md
+++ b/guide/english/ruby/ruby-on-rails/index.md
@@ -105,4 +105,4 @@ Controller (Action controller) interacts with the views and model to direct the
Not only is it free to use, you can also help make it better. More than 4,500 people have already contributed code to [Rails](https://github.com/rails/rails). It’s easier than you think to become one of them.
## Famous websites use or used Ruby on Rails
-Twitter was originally written in Ruby on Rails but moved away to a Java-based framework when needing to scale more. Twitch also heavily used Ruby and Ruby on Rails in the early stages but moved certain parts to Go-lang for anything that needed to be high-performant. Many websites that become famous and popular move parts or all of their back-end systems to frameworks based on compiled languages such Java, C++/C, and Go-lang from dynamic languages Ruby, Python, and Javascript (node). This is not always the case. Certain website are able to make dynamic language frameworks scale to as large as they need. Some good example are GitHub, Gitlab(open-source), Shopify, and Hulu.
+Twitter was originally written in Ruby on Rails but moved away to a Java-based framework when needing to scale more. Twitch also heavily used Ruby and Ruby on Rails in the early stages but moved certain parts to Go-lang for anything that needed to be high-performant. Many websites that become famous and popular move parts or all of their back-end systems to frameworks based on compiled languages such Java, C++/C, and Go-lang from dynamic languages Ruby, Python, and JavaScript (node). This is not always the case. Certain website are able to make dynamic language frameworks scale to as large as they need. Some good example are GitHub, Gitlab(open-source), Shopify, and Hulu.
diff --git a/guide/english/software-engineering/unit-tests/index.md b/guide/english/software-engineering/unit-tests/index.md
index 26bf36a556..3996d3b04c 100644
--- a/guide/english/software-engineering/unit-tests/index.md
+++ b/guide/english/software-engineering/unit-tests/index.md
@@ -19,7 +19,7 @@ A unit is often seen as the smallest piece of your code that can be accurately t
- **Fewer bugs** - Substantial research suggests that applying testing to an application can reduce production bug density by 40% — 80%.
- **Cost Reduction** - It's a very early phase in software testing so eventually it reduces cost of Testing as defects are captured in the early stage.
-### Example(In Javascript)
+### Example(In JavaScript)
Suppose there is a function written in file **add.js**
```javascript
var add = function(number1, number2){
diff --git a/guide/english/typescript/any-type/index.md b/guide/english/typescript/any-type/index.md
index b6cc174a36..a9c0bacb61 100644
--- a/guide/english/typescript/any-type/index.md
+++ b/guide/english/typescript/any-type/index.md
@@ -4,7 +4,7 @@ title: Any Type
# Any Type
-The Any type instructs Typescript to suspend type checking for the specified variables. Useful when working with dynamic content for which you don't know the type, and for transitioning your codebase from Javascript to Typescript in pieces. You can use Javascript's implicit typing with variables declared with a type of Any.
+The Any type instructs Typescript to suspend type checking for the specified variables. Useful when working with dynamic content for which you don't know the type, and for transitioning your codebase from JavaScript to Typescript in pieces. You can use JavaScript's implicit typing with variables declared with a type of Any.
Although the Any type can be helpful in specific circumstances, it should be used with caution, since it means we opt out of TypeScript's typechecking.
diff --git a/guide/english/voice/index.md b/guide/english/voice/index.md
index d3ad68d94a..5668706a87 100644
--- a/guide/english/voice/index.md
+++ b/guide/english/voice/index.md
@@ -8,7 +8,7 @@ Speech recognition allows users affected by accessibility difficulties (such as
Speech synthesis provides websites the ability to provide information to users by reading the text.
-## Javascript Web Speech API
+## JavaScript Web Speech API
The [Web Speech API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Speech_API) enables you to incorporate voice data into web apps using both speech recognition and speech synthesis.
diff --git a/mock-guide/english/html/elements/script-tag/index.md b/mock-guide/english/html/elements/script-tag/index.md
index ce7c74a602..63a8a431b0 100644
--- a/mock-guide/english/html/elements/script-tag/index.md
+++ b/mock-guide/english/html/elements/script-tag/index.md
@@ -5,7 +5,7 @@ title: Script Tag
The HTML Script tag is used to either contain client side JavaScript or reference an external JavaScript file using the script “src” attribute.
-The `
```
@@ -26,15 +26,15 @@ Or you can use it as a way to reference an external javascript file like this
```
```
-Here the `src` attribute of the element takes in a path to a Javascript file
+Here the `src` attribute of the element takes in a path to a JavaScript file
Script tags are loaded into your HTML in-order and syncronously so it is usually best practice to add your scripts right before the ending of your `` tag in your HTML like so
```
```
-You can see the official documentation for the script element on the [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script)
\ No newline at end of file
+You can see the official documentation for the script element on the [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script)
diff --git a/mock-guide/english/html/iframes/index.md b/mock-guide/english/html/iframes/index.md
index c22e904e74..dd1fa1586c 100644
--- a/mock-guide/english/html/iframes/index.md
+++ b/mock-guide/english/html/iframes/index.md
@@ -50,7 +50,7 @@ Any `
` link can target the content of an `