未捕获 Jquery 错误 - 帮助我

Question

您好，我在 Visualforce 页面上遇到了这个错误。

Uncaught ReferenceError: $ is not defined

这是我的代码

<apex:page standardController="Account" extensions="ActivityDetailExtension" standardStylesheets="false" sidebar="false">

   <apex:stylesheet value="{!URLFOR($Resource.SLDS0105, '/assets/styles/salesforce-lightning-design-system-vf.css')}"/>

   <style>
   .table-border {margin-top:20px;}
   .table-border tr td {border: 1px solid #d8dde6;}
   .table-border tr th {border: 1px solid #d8dde6;}
   .sub-goal {margin-left:50px;}

   </style>

    <script>

            $(document).ready(function(){
               j$('#modal').removeClass('slds-fade-in-open');
               j$('#backdrop').removeClass('slds-backdrop--open');
            });

            //Modal Open
            j$('#toggleBtn').click(function(){
              j$('#backdrop').addClass('slds-backdrop--open');
              j$('#modal').addClass('slds-fade-in-open');
            });

            //Modal Close
            function closeModal(){
              j$('#modal').removeClass('slds-fade-in-open');
              j$('#backdrop').removeClass('slds-backdrop--open');
            }
 </script>

   <div class="slds">
  <apex:form >
<button class="slds-button slds-button--brand" id="toggleBtn" onclick="ShowModal">Create New Sub-Goal</button>
<div id="myModal">       
 <div role="dialog" tabindex="-1" aria-labelledby="header43" class="slds-modal slds-fade-in-open">
  <div class="slds-modal__container">
    <div class="slds-modal__header">
      <button class="slds-button slds-modal__close slds-button--icon-inverse" title="Close">
        <svg class="slds-button__icon slds-button__icon--large" aria-hidden="true">
         <!-- <use xlink:href="/assets/icons/utility-sprite/svg/symbols.svg#close"></use>-->
        </svg>
        <span class="slds-assistive-text">Close</span>
      </button>
      <h2 id="header43" class="slds-text-heading--medium">Modal Header</h2>
    </div>
    <div class="slds-modal__content slds-p-around--medium">
      <p>Sit nulla est ex deserunt exercitation anim occaecat. Nostrud ullamco deserunt aute id consequat veniam incididunt duis in sint irure nisi. Mollit officia cillum Lorem ullamco minim nostrud elit officia tempor esse quis. Cillum sunt ad dolore
        quis aute consequat ipsum magna exercitation reprehenderit magna. Tempor cupidatat consequat elit dolor adipisicing.</p>
      <p>Dolor eiusmod sunt ex incididunt cillum quis nostrud velit duis sit officia. Lorem aliqua enim laboris do dolor eiusmod officia. Mollit incididunt nisi consectetur esse laborum eiusmod pariatur proident. Eiusmod et adipisicing culpa deserunt nostrud
        ad veniam nulla aute est. Labore esse esse cupidatat amet velit id elit consequat minim ullamco mollit enim excepteur ea.</p>
    </div>
    <div class="slds-modal__footer">
      <button class="slds-button slds-button--neutral" onclick="closeModal()">Cancel</button>
      <button class="slds-button slds-button--brand">Save</button>
    </div>
  </div>
</div>
<div class="slds-backdrop slds-backdrop--open"></div>
</div> 
</apex:form>       
   </div>
</apex:page>

我正在使用 Lightning Design 系统的切换功能，它将切换我的 div。因此，如果 div 存在，那么它将在单击按钮时显示弹出窗口，否则当我的页面打开时，切换或模式将不会 show.This 页面是 visualforce 页面我正在使用 Salsesforce 的 Lightning Design 系统，请帮助我。

Answer 1

您使用 $ 初始化您的页面，但您必须使用 j$ 进行初始化。因为你使用的是无冲突替换。

==> $(文档).ready(函数(){ j$('#modal').removeClass('slds-fade-in-open'); j$('#backdrop').removeClass('slds-backdrop--open'); }); ...

未捕获 Jquery 错误 - 帮助我

Uncaught Jquery Error- Help me

javascript

jquery

salesforce