This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const userId = db.user.findOne( | |
{ "phoneNumber" : "phoneNumber" } | |
); | |
const uid = userId._id; | |
const employee = db.user.findOne( | |
{ "userId" : uid } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
try { | |
db.studentCollection.updateMany( | |
{ status: "pending" }, | |
{ $set: { "status" : "verified" } } | |
); | |
} catch (e) { | |
print(e); | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
let num3 = 100; | |
function total(num1, num2) { | |
let result = num1 + num2 + num3; | |
console.log("Result inside: " + result); | |
return result; | |
} | |
const output = total(13, 5); | |
// Result inside: 118 | |
console.log(output); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Pet { | |
constructor(name, age) { | |
this.name = name; | |
this.age = age; | |
} | |
} | |
let pet1 = new Pet("Poltu", 2) | |
console.log(pet1); | |
// Pet { name: 'Poltu', age: 2 } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// truthy values | |
// true, {}, [], any number, "0" | |
// "false" inside quote or any quoted string | |
// new Date() | |
// Infinity, -Infinity | |
// biginteger number | |
if (true) { | |
console.log('condition is true'); | |
} else { | |
console.log('condition is false'); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const dog = { | |
name: 'Dog', | |
getName: function () { | |
return this.name; | |
}, | |
bark: function () { | |
console.log(this.name + ". Bark bark ...") | |
} | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const nums = [1, 2, 3, 4, 5, 6, 7, 8, 9]; | |
function greater(num) { | |
return num > 5; | |
} | |
const largeNumbers = nums.find(greater); | |
console.log(largeNumbers) | |
\\ 6 | |
const largeNumbers2 = nums.find(number => number > 5); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
function popup() { | |
console.log("Welcome to Bangladesh"); | |
} | |
setTimeout(popup, 3000); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const nums = [1, 2, 3, 4, 5, 6, 7, 8, 9]; | |
function greater(num) { | |
return num > 5; | |
} | |
const largeNumbers = nums.filter(greater); | |
console.log(largeNumbers) | |
\\ [ 6, 7, 8, 9 ] | |
const largeNumbers2 = nums.filter(number => number > 5); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const nums = [1, 2, 3, 4, 5, 6, 7, 8, 9]; | |
function double(num) { | |
return num * 2; | |
} | |
const doubleNums = nums.map(double); | |
console.log(doubleNums) | |
\\ [2, 4, 6, 8, 10, 12, 14, 16, 18] | |
const doubleNums2 = nums.map(number => number * 2); |
NewerOlder