Tips for passing Salesforce JavaScript Developer Certification

Motivation behind this

Since Salesforce introduces Lightning Web components the code standard and way of doing things changed in Salesforce arena, With the help of readily available out of the box components and the power of modern web stack development  it is essential that Salesforce developers must gain proficiency in modern JavaScript.

JavaScript is not  new in Salesforce but how it will be used now is different. So I thought to test my skills with this examination.

Exam outline : This exam is similar like PDII. You need to complete an online exam and need to complete a super badge in trailhead

Pro tips 

Complete the trail at trailhead from here

Go though the Array methods and constructors from 

1. https://www.w3schools.com/jsref/jsref_obj_array.asp
2.  https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array

Go through the Object 

1. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object

Go through the Promise 

1. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise

Clear all your doubts about async and await . If you already worked on the Superbadge you have some idea how it works.

1. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function
2. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await

Clear your doubts about setTimeOut and setInterVal.

Clear your doubts about querySelector 

1. https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector

Clear your doubts about modern JavaScript syntax and methods 

1. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax
2. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions
3. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/constructor
4. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain
5. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference#Control_flow

Understand the execution order

• https://medium.com/@marcellamaki/a-brief-overview-of-order-of-execution-in-javascript-e28744aa9479

Check for the console methods and debugging JavaScript 

• https://developer.mozilla.org/en-US/docs/Web/API/Console/table
• https://developer.mozilla.org/en-US/docs/Tools/Browser_Toolbox

Difference between const,let and var 

•     https://www.freecodecamp.org/news/var-let-and-const-whats-the-difference/#:~:text=var%20declarations%20are%20globally%20scoped%20or%20function%20scoped%20while%20let,be%20updated%20nor%20re%2Ddeclared.