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Regex to split camel case

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逝去的感伤
逝去的感伤 2020-11-28 23:31

I have a regular expression in JavaScript to split my camel case string at the upper-case letters using the following code (which I subsequently got from here):
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  • 渐次进展
    2020-11-28 23:56

    If you want an array of lower case words:

    "myCamelCaseString".split(/(?=[A-Z])/).map(s => s.toLowerCase());

    If you want a string of lower case words:

    "myCamelCaseString".split(/(?=[A-Z])/).map(s => s.toLowerCase()).join(' ');

    If you want to separate the words but keep the casing:

    "myCamelCaseString".replace(/([a-z])([A-Z])/g, '$1 $2')
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  • 佛祖请我去吃肉
    2020-11-28 23:59

    Hi I saw no live demo , thanks @michiel-dral

    var tests =[ "camelCase",
             "simple",
             "number1Case2"]

function getCamelCaseArray(camel) {
  var reg = /([a-z0-9])([A-Z])/g;
  return camel.replace(reg, '$1 $2').split(' ');
}

function printTest(test) {
document.write('<p>'+test + '=' + getCamelCaseArray(test)+'</p>');
}

tests.forEach(printTest);
    <!DOCTYPE html>
<html>

  <head>
    <link rel="stylesheet" href="style.css">
    <script src="script.js"></script>
  </head>

  <body>
  </body>

</html>

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  • 谎友^
    2020-11-29 00:00

    Sometime camelCase strings include abbreviations, for example:

    PDFSplitAndMergeSamples
PDFExtractorSDKSamples
PDFRendererSDKSamples
BarcodeReaderSDKSamples

    And in this case the following function will work, it splits the string leaving abbreviations as separate strings:

    function SplitCamelCaseWithAbbreviations(s){
   return s.split(/([A-Z][a-z]+)/).filter(function(e){return e});
}

    Example:

    function SplitCamelCaseWithAbbreviations(s){
   return s.split(/([A-Z][a-z]+)/).filter(function(e){return e});
}

console.log(SplitCamelCaseWithAbbreviations('PDFSplitAndMergeSamples'));
console.log(SplitCamelCaseWithAbbreviations('PDFExtractorSDKSamples'));
console.log(SplitCamelCaseWithAbbreviations('PDFRendererSDKSamples'));
console.log(SplitCamelCaseWithAbbreviations('BarcodeReaderSDKSamples'));

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  • 心在旅途
    2020-11-29 00:00 
    a = 'threeBlindMice'
a.match(/[A-Z]?[a-z]+/g) // [ 'three', 'Blind', 'Mice' ]

    is the simplest way I've found, for simple camel/titlecase splitting.

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  • 温柔的废话
    2020-11-29 00:01

    This RegExp String is

    .replace("/([a-zA-Z][a-z]*)/g",...);
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  • 佛祖请我去吃肉
    2020-11-29 00:04 
    "MyCamelCaseString".replace(/([a-z](?=[A-Z]))/g, '$1 ')

    outputs:

    "My Camel Case String"
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