In this Article we will go through how to check if a value is a string only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const isString = value => Object.prototype.toString.call(value) === '[object String]';
In this Article we will go through how to check if a value is an object only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const isObject = v => (v !== null && typeof v === 'object');
In this Article we will go through how to check if a string contains only letters only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const isAlpha = str => /^[A-Z]+$/i.test(str);
In this Article we will go through how to check if a string contains upper case characters only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const containsUpperCase = str => str !== str.toLowerCase();
In this Article we will go through how to check if a string contains whitespace only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const containsWhitespace = str => str => /\s/.test(str);
In this Article we will go through how to check if a string is a hexadecimal color only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const isHexColor = color => /^#([0-9A-F]{3}|[0-9A-F]{4}|[0-9A-F]{6}|[0-9A-F]{8})$/i.test(color);
In this Article we will go through how to check if a string is a hexadecimal number only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const isHexadecimal = str => /^[A-F0-9]+$/i.test(str);
In this Article we will go through how to check if a string is a mongodb objectid only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const isMongoId = str => str.length === 24 && /^[A-F0-9]+$/i.test(str);
In this Article we will go through how to check if a string is an octal number only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const isOctal = str => /^(0o)?[0-7]+$/i.test(str);
In this Article we will go through how to check if a number is in a given range only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const inRange = (num, a, b, threshold = 0) => (Math.min(a, b) - threshold <= num && num <= Math.max(a, b) + threshold);