使用 AJAX 从 document.getElementById() 进行数学运算答案

【问题标题】：Do math from document.getElementById() with AJAX使用 AJAX 从 document.getElementById() 进行数学运算
【发布时间】：2021-07-28 20:34:45
【问题描述】：

我有这样的 Python 代码

@app.route('/generate/transaction', methods=['POST'])
def generate_transaction():
    sender_public_key = request.form['sender_public_key']
    sender_private_key = request.form['sender_private_key']
    recipient_public_key = request.form['recipient_public_key']
    amount = request.form['amount']

    transaction = Transaction(sender_public_key, sender_private_key, recipient_public_key, amount)

    response = {'transaction': transaction.to_dict(),
                'signature': transaction.sign_transaction()}

    return jsonify(response), 200

在 HTML/AJAX 中我有这个

$(function() {
        $("#generate_transaction").click(function() {
            $.ajax({
                url: "/generate/transaction",
                type: "POST",
                dataType: 'json',
                data: $('#transaction_form').serialize(),
                success: function(response) {

                    document.getElementById('confirmation_sender_public_key').value = response['transaction']['sender_public_key'];
                    document.getElementById('confirmation_recipient_public_key').value = response['transaction']['recipient_public_key'];
                    document.getElementById('confirmation_amount').value = response['transaction']['amount'];

                    document.getElementById('transaction_signature').value = response['signature'];
    }

我想为amount 提供任何可以变成amount = amount * 10% 的输入但我不知道在哪里改变它

【问题讨论】：

标签： python html ajax

【解决方案1】：

假设你想做这个等式，你可以简单地添加另一个命令，例如

@app.route('/generate/transaction', methods=['POST'])
def generate_transaction():
    sender_public_key = request.form['sender_public_key']
    sender_private_key = request.form['sender_private_key']
    recipient_public_key = request.form['recipient_public_key']
    amount = request.form['amount']
    fraction_amount = amount * 0.1

    transaction = Transaction(sender_public_key, sender_private_key, 
                              recipient_public_key, fraction_amount)

    response = {'transaction': transaction.to_dict(),
                'signature': transaction.sign_transaction()}

    return jsonify(response), 200

如果你是这个意思，请告诉我。

【讨论】：

不错的答案！我希望你不介意我稍微清理了代码。欢迎来到 SO :)