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How do I make the first letter of a string uppercase, but not change the case of any of the other letters?

For example:

• "this is a test" -> "This is a test"
• "the Eiffel Tower" -> "The Eiffel Tower"
• "/index.html" -> "/index.html"

I'm looking for an example of how to capitalize the first letter of a string being entered into a text field. Normally, this is done on the entire field with a function, regex, OnBlur, OnChange, etc. I want to capitalize the first letter while the user is still typing.

For instance, if I'm typing the word "cat", the user should press 'c', and then by the time he presses 'a', the C should be capitalized in the field.

I think what I'm going for might be possible with keyup or keypress but I'm not sure where to start.

Anyone have an example for me?

I want to capitalize the days in the array named 'days' and get the result in an array form only by calling 'console.log(days)'
Please see below :Can anybody help me finish up code in the the block of for of loop?

edit(summary) : I questioned this to know the reason why the value of the each 'day' does not get changed in this case. and Suren Srapyan has provided a great answer to this :'You are getting the copy of each item in the loop. So day is only a copy of the item's value and changing it to have another value will not change the item in the array.'

let days = ['sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday'];for (day of days) {    day = day[0].toUpperCase() + day.slice(1);    // your code goes here}console.log(days);

I want capitalize first character of string in angularjs

As i used {{ uppercase_expression | uppercase}} it convert whole string to upper case.

I am using titleForHeaderInSection to show a header for a UITableView section. It worked fine with the iOS6 SDK, but the iOS7 SDK shows the header in all CAPS.

I guess it's part of Apple's updated Human Interface Guidelines; all examples in there show headers in all caps. Also, all section headers in Settings on my iPhone are in all caps.

However, I wonder if there is a way around that. Normally, I wouldn't mind showing caps if that improves consistency, but when I need to show people's names in a section header, it's a bit awkward.

Anybody any idea how to get around to capitalization?