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Convert string to pascal case in JavaScript

How to convert string to pascal case in JavaScript?
function toPascalCase(str){
    return (' ' + str).toLowerCase().replace(/[^a-zA-Z0-9]+(.)/g, (m, chr) => {
        return chr.toUpperCase()});

console.log(toPascalCase('the name field id     is name-field_id')); // TheNameFieldIdIsNameFieldId

The pascal case (PascalCase) means writing phrases without spaces or punctuation, indicating the separation of words with a single capitalized letter and the first letter is upper case. To convert a string to a pascal case in JavaScript you can use the replace method on the string and use regular expressions and callback functions to generate the right output.

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