Ajax - 如何填充隐藏字段？

Question

我是阿贾克斯新手。我想用来自服务器的响应文本填充表单上的隐藏字段。我能够将 HTML 中的responseText 显示为innerHTML。我只是不确定如何填充表单上的隐藏字段。任何建议将不胜感激！

:)

这是 JS：

  function getLocation(locationrouting) 
    {
   var getLocation= newXMLHttpRequest(); // sending request
   getLocation.open("GET", "/PP?PAGE=GETLOCATIONNAME&ROUTINGNUM=" + locationrouting, false);
   getLocation.send(null); // getting location

     var dv = document.getElementById("location_div");
     var verifyUnfound()

     if (getlocation.responseText === 'LOCATION NOT FOUND')
     {
       dv.style.color = "red";
     }
      else 
     {
      dv.style.color = "black";
    }
   dv.innerHTML = getLocation.responseText;
    }

Answer 1

HTML：

<input type="hidden" id="someid" name="somename" value="somevalue">

JS：

var hiddenField = document.getElementById('someid');
hiddenField.value = <whatever>;

您可以将您的函数更改为：

function getLocation(locationrouting) {
    var getLocation= newXMLHttpRequest(); // sending request
    getLocation.open("GET", "/PP?PAGE=GETLOCATIONNAME&ROUTINGNUM=" + locationrouting, false);
    getLocation.send(null); // getting location

    var dv = document.getElementById("location_div");
    var verifyUnfound();
    var hiddenField = document.getElementById('someid');

    if (getlocation . responseText === 'LOCATION NOT FOUND') {
        dv.style.color = "red";
    } else {
        dv.style.color = "black";
    }
    dv.innerHTML = getLocation . responseText;
    hiddenField.value = getLocation . responseText;
}

Answer 2

使用 jQuery，它将使设置值和执行 AJAX 请求变得更容易。

$("#something").attr("value", myvalue)