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JS changes the words separated by dashes into camel style

2022-04-23 03:26:00 【Open the door of the world】 

function camelize(str) {
    
  return str
    .split('-') // splits 'my-long-word' into array ['my', 'long', 'word']
    .map(
      // capitalizes first letters of all array items except the first one
      // converts ['my', 'long', 'word'] into ['my', 'Long', 'Word']
      (word, index) =>
        index == 0 ? word : word[0].toUpperCase() + word.slice(1)
    )
    .join(''); // joins ['my', 'Long', 'Word'] into 'myLongWord'
}
console.log(camelize('background-color')); // backgroundColor
console.log(camelize('list-style-image')); // listStyleImage
console.log(camelize('-webkit-transition')); // WebkitTransition

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