字符串转驼峰处理

function camelCase(str) {
  return str.replace(/_([a-z])/g, function(match, group1) {
    return group1.toUpperCase();
  });
}

console.log(camelCase("some_string"));  // "someString"

function camelCase(str) {
  return str.replace(/-\w/g, function(x) {
    return x.slice(1).toUpperCase();
  })
}


function camelCase(str) {
  return str.replace(/-([a-z])/g, function(x) {
    return x.slice(1).toUpperCase();
  })
}

console.log(camelCase("some-string"));