贝宝付款功能值

Question

payment: function (data, actions) {
  return actions.payment.create({
    payment: {
      transactions: [
        {
          amount: {
            total: '0.01',
            currency: 'EUR'
    

我有这个功能。我想通过id将html页面中的值传递给“ total”字段，以替换0.01。我该怎么办？