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Many years me and my friends we were volunteers on my university doing programming classes for young people.

I got main conclusion: Young people are awesome, especially students, because they always bring new and fresh ideas :)
* I loved to do it but my time is limited

  I decided to create something that will help millions of students

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JavaScript - String charCodeAt() method example

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5 points
// ONLINE-RUNNER:browser;

var text = 'abc';
console.log( text.charCodeAt(0) ); // 97

console.log( 'abc'.charCodeAt(0) ); // 97
console.log( 'abc'.charCodeAt(1) ); // 98
console.log( 'abc'.charCodeAt(2) ); // 99

console.log( text.charCodeAt()     ); // 97
console.log( text.charCodeAt(-1)   ); // NaN
console.log( text.charCodeAt(10)   ); // NaN
console.log( text.charCodeAt(null) ); // 97

1. Documentation

SyntaxString.prototype.charCodeAt(index)
Parametersindex - integer number value that represents character position (primitive value).
ResultCharacter code from index position (primitive value).
DescriptioncharCodeAt takes only one parameter and return character code at index position inside string. The codes are compatible with UTF-16 (Unicode). If some character code is bigger than 0xFFFF then retuened is first part of code. For index from out of range NaN is returned.

 

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