创建适用于两个单独脚本的随机 ID

Question

我不知道如何解决这个问题，所以希望你们中的一些人有一个很好的解决方案。

我设置了两个联系表 - 一个用于提供初始信息，另一个用于提供相关的后续问题。请注意，它故意发送两种不同的表格。

通过电子邮件接收信息时，我想要一个随机 ID，例如：#42432，以表明收到的两封电子邮件来自同一会话/人。

<!-- Part 1 --> 
<script>
function send1() {
    var form_name = jQuery('[name=name]').val();
    var form_title = jQuery('[name=title]').val();
    var form_email = jQuery('[name=email]').val();
    var form_textarea = jQuery('[name=textarea]').val();

    var xhttp = new XMLHttpRequest();
    xhttp.onreadystatechange = function() {
        if (this.readyState == 4 && this.status == 200) {
            document.getElementById("contact-form").innerHTML =
                this.responseText;
        }
    };
    xhttp.open("POST", "php/contact1.php", true);
    xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhttp.send("name="+form_name+"&title="+form_title+"&email="+form_email+"&textarea="+form_textarea);
}
</script>
<!-- Part 2 -->
<script>
    function send2() {
        var form_industry = jQuery("[name='industry']").is(":checked");
        var form_academia = jQuery("[name=academia]").is(":checked");
        var form_targeted = jQuery("[name=targeted]").is(":checked");
        var form_discovery = jQuery("[name=discovery]").is(":checked");
        var form_dunno = jQuery("[name=dunno]").is(":checked");
        var form_samples = jQuery('[name=samples]').val();
        var form_groups = jQuery('[name=groups]').val();
        var form_groups2 = jQuery('[name=groups2]').val();
        var form_biological = jQuery('[name=biological]').val();
        var form_technical = jQuery('[name=technical]').val();
        var form_source = jQuery('[name=source]').val();
        var form_origen = jQuery('[name=origen]').val();
        var form_extraction = jQuery('[name=extraction]').val();
        var form_aim = jQuery('[name=aim]').val();
        var form_phone = jQuery('[name=phone]').val();      
        var form_affiliated = jQuery('[name=affiliated]').val();
        var form_textarea = jQuery('[name=textarea]').val();

        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {
                document.getElementById("contact-form").innerHTML =
                    this.responseText;
            }
        };
        xhttp.open("POST", "php/contact2.php", true);
        xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
        xhttp.send("industry="+form_industry+"&academia="+form_academia+"&targeted="+form_targeted+"&discovery="+form_discovery+"&dunno="+form_dunno+"&samples="+form_samples+"&groups="+form_groups+"&groups2="+form_groups2+"&biological="+form_biological+"&technical="+form_technical+"&source="+form_source+"&origen="+form_origen+"&extraction="+form_extraction+"&aim="+form_aim+"&phone="+form_phone+"&affiliated="+form_affiliated+"&textarea="+form_textarea);
    }
</script>

xhttp.open("POST", "php/contact1.php" 示例：

<?php
$name = $_POST['name'];
$title = $_POST['title'];
$email = $_POST['email'];
$textarea = $_POST['textarea'];

$email_from = 'New contact';
$email_subject = 'New Contact - Request with Questionary';
$email_body = "New contact request (Request with Questionary):
\n".
            "Name: $name\n".
            "Title: $title\n".
            "Email: $email\n".
            "Message: $textarea\n";


$to = "email@email.com";
$headers = "From: $email_from \r\n";
$headers = "Reply-To: $email \r\n";

mail($to,$email_subject,$email_body,$headers);

header("location: https://website.com/php/questionary.html");
?>

第二种形式的 PHP 文件以相同的方式构建。

我期待听到您的解决方案。

一切顺利，
路易

Answer 1

您可以生成 GUID 或随机数，如 answer 中提到的那样作为全局变量，如果表单在同一页面中加载而无需重新加载，这两种形式都将可用。例如：

<script>
function uuidv4() {
    const a = crypto.getRandomValues(new Uint16Array(8));
    let i = 0;
    return '00-0-4-1-000'.replace(/[^-]/g, 
            s => (a[i++] + s * 0x10000 >> s).toString(16).padStart(4, '0')
    );
}

var guidVariable = uuidv4();

function send1() {
    ...
    xhttp.open("POST", "php/contact1.php", true);
    xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhttp.send("name="+form_name+"&title="+form_title+"&email="+form_email+"&textarea="+form_textarea+"&guidVariable ="+guidVariable );
}
</script>


<!-- Part 2 -->
<script>
    function send2() {
        ...    
        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {
                document.getElementById("contact-form").innerHTML =
                    this.responseText;
            }
        };
        xhttp.open("POST", "php/contact2.php", true);
        xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
        xhttp.send("industry="+form_industry+"&academia="+form_academia+"&targeted="+form_targeted+"&discovery="+form_discovery+"&dunno="+form_dunno+"&samples="+form_samples+"&groups="+form_groups+"&groups2="+form_groups2+"&biological="+form_biological+"&technical="+form_technical+"&source="+form_source+"&origen="+form_origen+"&extraction="+form_extraction+"&aim="+form_aim+"&phone="+form_phone+"&affiliated="+form_affiliated+"&textarea="+form_textarea+"&guidVariable ="+guidVariable );
    }
</script>

参考How to create a GUID / UUID