如何在没有onclick / onkeyup / onchange的情况下调用Ajax函数等(How to call Ajax functions without onclick/onkeyup/onchange etc)

 我试图包含一个.php文件，它将通过从MySQL数据库中提取问题来为我生成一个表单。 我找到了很多方法来调用这个函数，我用一个参数（页码）调用了getQuestions（）。 我见过使用onchange或按钮（onclick）等执行我的php文件的下拉菜单，但有没有办法使用我的功能没有这些？ 我只是希望它可以自动加载页面的其余部分，而不会有任何不必要的交互。 
 
 不知道这是否重要，但我的页面是在jQuery Mobile中创建的，所以只有在正确的页面/ div-id处于活动状态时才能看到。 
 
function getQuestions(str)
    { 
    if (window.XMLHttpRequest)
      {// code for IE7+, Firefox, Chrome, Opera, Safari
      xmlhttp=new XMLHttpRequest();
      }
    else
      {// code for IE6, IE5
      xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    xmlhttp.onreadystatechange=function()
      {
      if (xmlhttp.readyState==4 && xmlhttp.status==200)
        {
            document.getElementById("page_1").innerHTML=xmlhttp.responseText;
        }
      }
    xmlhttp.open("GET","generate_questions.php?p="+str,true);
    xmlhttp.send();
    }
 
 这些是我试图用来在HTML的其余部分查看.php的函数（没有成功） 
 
<script type="text/javascript">
                    $(document).ready(function() {
                    getQuestions(1);
                    });
                    </script>


window.onload = function() {
                    $("#page_1").load(getQuestions(1));
                    }

window.onload = function() {
                    getQuestions(1);
                    }

I am trying to include a .php file that will generate a form for me by picking out questions from a MySQL database. I've found numerous ways to call this function that I have called getQuestions() with 1 parameter (page number). I've seen drop down menus that will execute my php file using onchange, or buttons (onclick) etc. But is there a way to use my function without these? I just want it to automatically load with the rest of the page without any unnecessary interactions.
 
Don't know if this matters but my page is made in jQuery Mobile so it should only be visible when the correct page/div-id is active.
 
function getQuestions(str)
    { 
    if (window.XMLHttpRequest)
      {// code for IE7+, Firefox, Chrome, Opera, Safari
      xmlhttp=new XMLHttpRequest();
      }
    else
      {// code for IE6, IE5
      xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    xmlhttp.onreadystatechange=function()
      {
      if (xmlhttp.readyState==4 && xmlhttp.status==200)
        {
            document.getElementById("page_1").innerHTML=xmlhttp.responseText;
        }
      }
    xmlhttp.open("GET","generate_questions.php?p="+str,true);
    xmlhttp.send();
    }
 
These are the functions I have tried to use to view the .php within the rest of the HTML (without success)
 
<script type="text/javascript">
                    $(document).ready(function() {
                    getQuestions(1);
                    });
                    </script>


window.onload = function() {
                    $("#page_1").load(getQuestions(1));
                    }

window.onload = function() {
                    getQuestions(1);
                    }

原文：https://stackoverflow.com/questions/11310923