vant/es/utils/format/string.js

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var camelizeRE = /-(\w)/g;
export function camelize(str) {
  return str.replace(camelizeRE, function (_, c) {
    return c.toUpperCase();
  });
}
export function padZero(num, targetLength) {
  if (targetLength === void 0) {
    targetLength = 2;
  }

  var str = num + '';

  while (str.length < targetLength) {
    str = '0' + str;
  }

  return str;
}