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JavaScript - case insensitive string comparison
3 points
In this article, we would like to show you how to do case-insensitive string comparison in JavaScript.
Quick solution:
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var text1 = 'ABC';2
var text2 = 'abc';3
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var result = text1.toUpperCase() === text2.toUpperCase();5
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console.log(result); // trueNote:
You can also use
toLowerCase()method instead oftoUpperCase().
In this example, we create a reusable function using modern JavaScript syntax for case-insensitive string comparison.
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const areEqual = (string1, string2) => {2
return string1.toUpperCase() === string2.toUpperCase();3
};4
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// Usage example:7
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const text1 = 'ABC';9
const text2 = 'abc';10
const text3 = 'AbC';11
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console.log(areEqual(text1, text2)); // true13
console.log(areEqual(text1, text3)); // true14
console.log(areEqual(text2, text3)); // true
