javascript - dojo xhr发布问题

Question

这是我的源代码:

<script>
  function sendText(){
    require([ "dijit/form/Button", "dojo/_base/xhr"],
      function(Button,xhr) {

        xhr.post({
          url: "validURL1.html",
          form: dojo.byId("myForm"),
          load: function(data){
            var newStore = 
              new ItemFileWriteStore({url:'validURL2.html'});
            dijit.byId("grid").setStore(newStore);
          },
          error: function(error){
            alert("error!");
          }
        });
    });
  }
</script>

<button data-dojo-type='dijit.form.Button' onClick ='sendText()'>submit</button>

但是当我按下按钮并尝试将我的数据发布到服务器时，firebug 说:

_145 is undefined

那么我的代码有什么问题呢？错误“_145”是什么？

更新

<script>

require([ "dijit/form/Button", "dojo/_base/xhr","dijit/form/Form",  "dojo/data/ItemFileWriteStore", 
          "dojo/dom-form","dijit/registry","dojo/ready", "dojox/grid/EnhancedGrid"],
        function(Button,xhr, Form, ItemFileWriteStore, domForm, registry,ready, EnhancedGrid) {
        var hasBeenSent = false;

        window.sendText = function() {

        xhr.post({
            url: "validURL1.html",
            form: dojo.byId("myForm"),
            handleaAs: "text",
            load: function(data) {
                var newStore = new ItemFileWriteStore({url:'validURL2.html'});
                dojo.byId("grid").setStore(newStore);
          },
          error: function(error){

            alert("error!");
          },
          handle: function() {

                hasBeenSent = true;
            }
        });

            }   
});
</script>

现在它说:

TypeError: dojo.byId("grid").setStore is not a function

但是，我需要“enhancedGrid”。所以也许我应该需要一些其他模块或类？

Answer 1

将 dojo.byId("grid") 更改为 dijit.byId("grid")，因为您对 dojo.byId("grid") 的调用将只返回 DOMNode 而不是 Widget。

此外，如果您的“网格”是标记声明，请确保 dojo.parser.parse() 已运行。如果设置了 parseOnLoad:true，您需要等待 dojo.ready 触发，例如dojo.ready(function() { require.... }); 或 require(["dojo/domReady!, ....], function(..) { XHR });

最终，如果仅在您的 require 语句中调用 update-xhr，此构造将表现得更好。

require([
     "dojo/parser", // Pull in parser to manually run it if parseOnLoad is not set true
     "dijit/form/Button",
     "dojo/_base/xhr",
     ...
     "dojox/grid/EnhancedGrid",
     "dojo/domReady!" // Wait untill DOM is done loading and all of the dojo base has been prepared
   ], function(
      Parser,
      Button,
      ...
   ) {
        Parser.parse();
        var hasBeenSent = false;

        window.sendText = function() {

        xhr.post({
            url: "sample/update.html",
            form: dojo.byId("updateUser"),
            handleaAs: "text",
            load: function(data) {
                var newStore = new ItemFileWriteStore({url:'sample/userLissts.html'});
                dijit.byId("grid").setStore(newStore);
          },
          error: function(error){

            alert("error!");
          },
          handle: function() {

                hasBeenSent = true;
            }
        });

            }   
});