JavaScript Validation - Exercises, Practice, Solution
JavaScript validation [10 exercises with solution]
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1. Write a JavaScript function to validate whether a given value type is boolean or not.
2. Write a JavaScript function to validate whether a given value type is an error or not.
3. Write a JavaScript function to validate whether a given value type is NaN or not.
4. Write a JavaScript function to validate whether a given value type is null or not.
5. Write a JavaScript function to validate whether a given value is a number or not.
6. Write a JavaScript function to validate whether a given value is an object or not.
7. Write a JavaScript function to validate whether a given value type is a pure JSON object or not.
8. Write a JavaScript function to validate whether a given value is RegExp or not.
9. Write a JavaScript function to validate whether a given value type is char or not.
10. Write a JavaScript function to check whether the given values are the same or not.
More to Come !
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Live Demo:
See the Pen javascript-common-editor by w3resource (@w3resource) on CodePen.
Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.
JavaScript: Tips of the Day
Eequality test
console.log(Number(2) === Number(2));
console.log(Boolean(false) === Boolean(false));
console.log(Symbol('foo') === Symbol('foo'));
Every Symbol is entirely unique. The purpose of the argument passed to the Symbol is to give the Symbol a description. The value of the Symbol is not dependent on the passed argument. As we test equality, we are creating two entirely new symbols: the first Symbol('foo'), and the second Symbol('foo'). These two values are unique and not equal to each other, Symbol('foo') === Symbol('foo') returns false.
Ref: https://bit.ly/323Y0P6
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