How JavaScript capitalizes the first letter in a string

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How to capitalize the first letter in a string

A very common operation is to capitalize the first letter of a string. Although many programming languages have a native way to do this, JS needs to do some work.

Let word = 'apply' word = word [0] .toUpperCase () + word.substr (1) console.log (word) / / "Apple"

Another way:

/ / This shows an alternative way let word = "apple"; / / use the extension operator (`...`) to split the characters const characters = [... word]; characters [0] = characters [0] .toUpperCase (); word = characters.join ("); console.log (word); / /" Apple "is all the content of the article" how to capitalize the first letter in a string ". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!