https://github.com/himadree/javascript-tips-and-tricks-01

JavaScript Tips and Tricks
https://github.com/himadree/javascript-tips-and-tricks-01

Last synced: 5 days ago
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JavaScript Tips and Tricks

• Host: GitHub
• URL: https://github.com/himadree/javascript-tips-and-tricks-01
• Owner: himadree
• Created: 2022-12-13T10:38:04.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2022-12-13T14:21:05.000Z (about 2 years ago)
• Last Synced: 2024-03-21T04:39:31.649Z (10 months ago)
• Size: 1.95 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# JavaScript Tips and Tricks 01

JavaScript Tips and Tricks

### Question 01

```javascript

log(null == undefined);

Ans: True;

log(null === undefined);

Ans: False;

```

### What is IIFE

`IIFE (Immediately Invoked Function)`

```javascript

(function () {

  log("Hello IIFE");

})();

```

### Array.prototype.flat()

`The flat() method creates a new array with all sub-array elements concatenated into it recursively up to the specified depth.`

`EX: flat()

flat(depth)`

```javascript

const arr1 = [1, 2, 3, [4, 5]];

log(arr1.flat());

//output: [0, 1, 2, 3, 4]

const arr2 = [1, 2, 3, [[[4, 5]]]];

log(arr2.flat(2));

//output: [0, 1, 2, [3, 4]]

```

### Remove falsy value from any array

`falsy value: false, null, NaN, undefine, 0, ''`

```javascript

let misArray = ["apple", "", NaN, "orange", null, undefined];

let fruits = misArray.filter(Boolean);

log(fruits);

```

### Convart any value to boolean

```javascript

log(!!"Hello World"); //true

log(!!1); //true

log(!!0); //false

log(!!undefined); //false

```