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| var x = 1; | |
| console.log(x++); | |
| // x++ will increment the number | |
| // after it has been printed (any operation) | |
| // which means x will only be incremented after the | |
| // above statement is executed | |
| // value of x after line number 2 is executed is 2 | |
| console.log(++x); | |
| // ++x will first increment and then | |
| // print (or let it be used for operations) |
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| var classNumber = 1; // Initializaiton | |
| while(classNumber <= 12) { // Declared a condition | |
| console.log(classNumber); | |
| classNumber++; // Updating the state | |
| // which is moving the student from class | |
| // number X to X+1 | |
| } |
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| var x = 2; // Initialization | |
| while(x <= 100) { // Condition | |
| if(x % 2 == 0) { // % gives the remainder | |
| // this means that the number | |
| // is EVEN | |
| console.log(x); | |
| } | |
| x = x + 1; // Updating the state | |
| } |
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| var manojStudent = { | |
| 'name': 'manoj', | |
| 'age': 17, | |
| 'city': 'udaipur', | |
| 'class': '1st semster of college', | |
| 'weight': 55.67 | |
| } | |
| console.log(manojStudent); |
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| var manojStudent = { | |
| 'name': 'manoj', | |
| 'age': 17, | |
| 'city': 'udaipur', | |
| 'class': '1st semster of college', | |
| 'weight': 55.67 | |
| } | |
| console.log(manojStudent['age']); | |
| console.log(manojStudent['weight']); |
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| var manojStudent = { | |
| 'name': 'manoj', | |
| 'age': 17, | |
| 'city': 'udaipur', | |
| 'class': '1st semster of college', | |
| 'weight': 55.67 | |
| } | |
| for(var nameOfKey in manojStudent) { | |
| console.log(nameOfKey, "..", manojStudent[nameOfKey]); |
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| var topNStudents = [ | |
| 'manoj', | |
| 'ramesh', | |
| 'garima', | |
| 'ashish', | |
| 'saru', | |
| 'tanya' | |
| ]; |
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| var classTimes = [ | |
| [8, 9, 8, 9], // Day 1 | |
| [1, 2, 6, 7], // Day 2 | |
| [2, 7, 8, 9] // Day 3 | |
| ] | |
| console.log(classTimes[1]); | |
| console.log(classTimes[1][0]); |
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| const person = { | |
| firstName: "..", | |
| lastName: '..', | |
| age: 30 | |
| } | |
| console.log(person['age']); | |
| // We want to modify the age | |
| for(var nameOfKey in person) { | |
| if(nameOfKey == "age") { // If the name of key is age | |
| // If the key is age, |
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| var firstName = "foo"; | |
| var lastName = "bar"; | |
| var fullName = firstName + " " + lastName; | |
| console.log(fullName); | |
| var _fullName = `${firstName} ${lastName}`; // concatenate strings | |
| console.log(_fullName); |