使用Ajax将Javascript变量传递给PHP

I'm working on an existing script at the moment which uses Ajax, something I've never worked with before. I have a variable set in my javascript file which gets its value from an input field on my page. I need to use Ajax to post this to my PHP page only I've no idea where to start,

我正在研究一个使用Ajax的现有脚本,这是我以前从未使用过的。我的javascript文件中有一个变量集,它从我页面上的输入字段中获取其值。我需要使用Ajax将此发布到我的PHP页面我只是不知道从哪里开始,

Im not sure what code you would need to see, but My javascript/AJAX code is, the variable I need to pass is 'var credoff'

我不知道你需要看什么代码,但我的javascript / AJAX代码是,我需要传递的变量是'var credoff'

$(".getPoint").click(function () {
    var theid = $(this).attr("id");
    var onlyID = theid.split("_");
    var onlyID = onlyID[1];
    var credoff = parseInt($(this).children('input.credoff:hidden').val());

    $.ajax({
        url: 'do.php',
        type: 'POST',
        data: "userID=" + onlyID,
        success: function (data) {
            if (data != "success1" && data != "success5") {
                $("#" + theid).text(data);
            } else {

                $("#thediv_" + onlyID).fadeOut("slow");
                $('#creditsBalance').fadeOut("slow");
                newbalance = parseInt($('#creditsBalance').text());

Wouldit have to be in this format?

它必须采用这种格式吗?

data: "userID=" + onlyID,
"credoff=" + credoff

2 个解决方案

#1

...
data: {
    userId: onlyID,
    credoff: credoff
},
...

#2

Or you can do this:

或者你可以这样做:

data: "userID=" + onlyID + "&credoff=" + credoff

don't forget the ampersand! &

不要忘记&符号! &

#1

...
data: {
    userId: onlyID,
    credoff: credoff
},
...

#2