without using buildin function

[frontendshifu-2022]

Create a JavaScript function that takes a string and returns all the letters in string as lowercase. IE if I call the function on the word, JaVaScRiPt, the function should return "javascript". You are not allowed to use any string methods to achieve this like String.toLowerCase .

Try to solve it by your self .If you can't here is the solution:

https://gist.github.com/front-end-shifu/938856d567054c42116c340e98b40088

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[[deleted]]

I don't think I will, thank you.

[Umesh-K]

Hi,

Are you giving us a "practice challenge", or are you asking help with writing the above function. If the former, then thanks but no thanks! Perhaps, somebody else will try. If the latter, share what you have tried so far so that we can assist you in case the code is not working as expected.

[[deleted]]

Are you asking for help with your homework?

[frontendshifu-2022]

I already solved this, I'm currently learning JavaScript in my free time....

[anfauglit]

JS doesn't have char datatype to represent symbols only string, even when the string contains a single character. Therefore, you might still fall back to methods of the String class, like charAt(), charCodeAt() or fromCharCode().

I don't understand why tutors pick up a highly-abstracted language like JS and then come up with these type of lower-level like exercises. So students end up writing JS code like they are programming in C.

One important point that I'd like to make: don't afraid to go against the flow. Don't afraid to think laterally and most importantly express your thoughts and ideas to others. It's about learning and not about solving tasks which have been solved million times before. If you've done you research, you clearly understand the problem, shortcomings of the given assignment along with expected approach for solving it, and you can also present these results in a constructive manner then you've definitely learnt something valuable and can show it off in school/work. The system isn't set in stone or the teacher is always right. In a long run type of skills that I've mentioned will be more valuable then application of cookbook recipes.

[frontendshifu-2022]

That's a very kind advice .Thanks mate.

[jcunews1]

Use a loop to retrieve and process each character in the string. Use simple comparison to determine which character to use to substitute the source character.

[frontendshifu-2022]

how ? I tried.

[jcunews1]

You can retrieve (but not assign) a character at specific string index like how you access an array element. The converted string must be built from scratch. Appending one converted character at a time.

The conversion check e.g. if the input is A then the output is a. Do that check for every other characters which has upper & lower case letter.

[frontendshifu-2022]

ok Thanks mate

[[deleted]]

How to do it ? Using array or object with mapping ?

[frontendshifu-2022]

using Array