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JavaScript - validate encoded URI component characters
5 points
In this short article, we would like to show how to check if some text is correctly encoded URI component using JavaScript.
Note: to know what characters should be escaped encoding URI component check this article.
Quick solution:
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const VALIDATION_EPRESSION = /^[0-9a-zA-Z-_.!~*'()%]*$/;2
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const validateURIComponent = (text) => {4
VALIDATION_EPRESSION.lastIndex = 0;5
return VALIDATION_EPRESSION.test(text);6
};7
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// Usage example:10
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console.log(validateURIComponent("abcdefghijklmnopqrstuvwxyz")); // normal English letters12
console.log(validateURIComponent("ABCDEFGHIJKLMNOPQRSTUVWXYZ")); // capital English letters13
console.log(validateURIComponent("-_.!~*'()")); // not escaped special characters14
console.log(validateURIComponent("%")); // escape character15
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console.log(validateURIComponent("@#$^&+=[]")); // should be escaped17
console.log(validateURIComponent("ąćęłńóśźż")); // should be escaped18
// etc.