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| const user = { name: 'David', age: 30, city: 'New York'}; | |
| const copy = {...user}; | |
| console.log(copy); |
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| const user = { name: 'David', age: 30, city: 'New York'}; | |
| const copy = Object.assign({}, user); | |
| console.log(copy); |
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| const user = { name: 'David', age: 30, city: 'New York' }; | |
| const updateUser = function(updates) { | |
| return { ...user, ...updates }; | |
| }; | |
| const updatedUser = updateUser({ age: 34, city: 'Boston'}); | |
| console.log(updatedUser); |
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| git grep -n $'require([\'"]express[\'"]' |
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| git grep $'\.http_mode' |
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| [{ | |
| "name":"Joker", | |
| "release_date":"2019-10-02", | |
| "director": "Todd Phillips", | |
| "image": "https://upload.wikimedia.org/wikipedia/en/e/e1/Joker_%282019_film%29_poster.jpg", | |
| "description": "During the 1980s, a failed stand-up comedian is driven insane and turns to a life of crime and chaos in Gotham City while becoming an infamous psychopathic crime figure." | |
| }, | |
| { | |
| "name":"Frozen 2", | |
| "release_date":"2019-11-20", |
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| const validateEmail = email => /^[^@ ]+@[^@ ]+\.[^@ \.]+$/.test(email); | |
| const isValidEmail = function(value) { | |
| if (validateEmail(value)) { | |
| return true; | |
| } else { | |
| return "Please enter a valid email address"; | |
| } | |
| } | |
| let isValid = isValidEmail('[email protected]'); |
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| const validateEmail = email => /^[^@ ]+@[^@ ]+\.[^@ \.]+$/.test(email); | |
| const isValidEmail = value => validateEmail(value) || 'Please enter a valid email address.'; | |
| let isValid = isValidEmail('[email protected]'); | |
| console.log(isValid); // true | |
| isValid = isValidEmail('abc@@gmail.com'); | |
| console.log(isValid); // Please enter a valid email address |
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| const isNotEmpty = function(fieldName) { | |
| return function(fieldValue) { | |
| if (fieldValue.trim().length > 0) { | |
| return true; | |
| } else { | |
| return fieldName[0].toUpperCase() + fieldName.slice(1) + " is required."; | |
| } | |
| }; | |
| }; |