How can special characters be included when using RegEx to separate camelCase strings?

Question

How can special characters be included when using RegEx to separate camelCase strings?

This is the code snippet I am currently using:

.split(' ')
.join('+')
.replace(/([A-Z])/g, ' $1')
.replace(/^./, function(str) {
    return str.toUpperCase();
})
.replace(/\++/g, '')
.replace(/asdf/g, ';')
.replace(';', '')
.replace(' ', '')
.split(';');

The purpose of this code is to transform 'camelCase' into 'Camel Case'. It also has additional functions such as consolidating multiple spaces into a single space using the '+' symbol. Moreover, it replaces instances of 'asdf' with ; and removes the first ; and initial space.

However, there is an issue that arises where my German special characters, specifically ÄÖÜ, are being converted into question marks in the resulting output.

Based on my observations, the output generated looks something like this:

input: ... Oberbayern:Kreis EichstättAsdf ...
output: ... Oberbayern: Kreis Eichsttt; Asdf ...

I would greatly appreciate any assistance in resolving this problem.

javascript regex

Answer 1

Answer №1

If you're looking to split camel case words, you can implement the following approach:

Method

Identify any small character followed by a capital character.
Add a space between them.
Then capitalize the first character of the string.

Important Note: It's recommended to consider using string.toLocaleUpperCase, if it's supported.

function splitCamelCaseWords(inputString) {
  var regex = /([a-z])(?=[A-Z])/g;

  inputString = inputString.replace(regex, "$1 ");
  inputString = capitalizeFirstLetter(inputString.charAt(0)) + inputString.substring(1);
  console.log(inputString);
  return inputString;
}

function capitalizeFirstLetter(letter){
  return letter.toLocaleUpperCase ? letter.toLocaleUpperCase() : letter.toUpperCase();
}

var str1 = "thisIsTestString";
var str2 = "kreisEichstätt";

splitCamelCaseWords(str1);
splitCamelCaseWords(str2);

You can also use the following method to detect any character except a space followed by a capital letter.

function splitCamelCaseWords(inputStr) {
  var regex = /([^ ])(?=[A-Z])/g;
  inputStr = inputStr.replace(regex, "$1 ");
  inputStr = capitalizeFirstLetter(inputStr.charAt(0)) + inputStr.substring(1);
  console.log(inputStr);
  return inputStr;
}

function capitalizeFirstLetter(letter){
  return letter.toLocaleUpperCase ? letter.toLocaleUpperCase() : letter.toUpperCase();
}

splitCamelCaseWords("thisIsATestString");
splitCamelCaseWords("kreisEichstätt");
splitCamelCaseWords("kreisäEichstätt");

Answer 2

If you're looking to split camel case words, you can implement the following approach:

Method

Identify any small character followed by a capital character.
Add a space between them.
Then capitalize the first character of the string.

Important Note: It's recommended to consider using string.toLocaleUpperCase, if it's supported.

function splitCamelCaseWords(inputString) {
  var regex = /([a-z])(?=[A-Z])/g;

  inputString = inputString.replace(regex, "$1 ");
  inputString = capitalizeFirstLetter(inputString.charAt(0)) + inputString.substring(1);
  console.log(inputString);
  return inputString;
}

function capitalizeFirstLetter(letter){
  return letter.toLocaleUpperCase ? letter.toLocaleUpperCase() : letter.toUpperCase();
}

var str1 = "thisIsTestString";
var str2 = "kreisEichstätt";

splitCamelCaseWords(str1);
splitCamelCaseWords(str2);

You can also use the following method to detect any character except a space followed by a capital letter.

function splitCamelCaseWords(inputStr) {
  var regex = /([^ ])(?=[A-Z])/g;
  inputStr = inputStr.replace(regex, "$1 ");
  inputStr = capitalizeFirstLetter(inputStr.charAt(0)) + inputStr.substring(1);
  console.log(inputStr);
  return inputStr;
}

function capitalizeFirstLetter(letter){
  return letter.toLocaleUpperCase ? letter.toLocaleUpperCase() : letter.toUpperCase();
}

splitCamelCaseWords("thisIsATestString");
splitCamelCaseWords("kreisEichstätt");
splitCamelCaseWords("kreisäEichstätt");

How can special characters be included when using RegEx to separate camelCase strings?

Answer №1

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