javascript - 全选/取消全选页面中的复选框

Question

我看过this这似乎对我的代码没有影响。我试过了 this这似乎只影响第一个复选框，但当我再次单击它时不会取消选中该复选框....我还看到了其他一些我不确定是否完全符合 Rails 风格(或任何术语)的方法。

那么，有人能给我指出正确的方向吗？

这是我的看法:

<%= render 'admin/distributions/head' %>
<% title 'Workflow' %>


<%= form_for @search, :url => url_for(:controller => params[:controller], :action => params[:action]), :html => {id => "distribution_workflow",:method => :get} do |f| %>

  <div class="opportunity-block yellow">

    <div class="form-block mrl mbm">
      <%= f.label :created_at_gt, "Created at >" %>
      <%= f.text_field :created_at_gt, :class => "js-db-date-picker" %>
    </div>

    <div class="form-block mrl mbm">
      <%= f.label :created_at_lte, "Created at <=" %>
      <%= f.text_field :created_at_lte, :class => "js-db-date-picker" %>
    </div>

    <div class="form-block mrl mbm mtm">
      <%= f.label :status_equal, "Status" %>
      <%= f.select :status_equal, %w(delivered no_success already_registered qa_complete success follow_up), :include_blank => " " %>
    </div>

    <div class="clear"></div>
    <%= submit_tag 'Apply Filter', :class => "input-button dark unit-right mrl" %>
    <div class="clear"></div>
  </div>
<% end  %>


<%= form_tag edit_multiple_admin_distributions_workflows_path , :id => "workflow_form" do %>
<%= submit_tag "Edit Selected" %>
  <table class="standard-grid"> 
    <tr> 
      <th class="first"> </th>
      <th>ID</th>
      <th>Customer</th>
      <th>Resume URL</th>
      <th>Partner</th>
      <th>Status</th>
      <th>Assigned To</th>
      <th>Comments</th>
    </tr>
    <% @report.each do |distribution| %>
      <tr>
        <td><%= check_box_tag "distribution_ids[]", distribution.id %></td>
        <td>
          <%= distribution.owner.id %>
        </td>
        <td>
          <%=link_to distribution.owner.full_name, "mailto:#{distribution.owner.email}" %>
        </td>
        <td>
          <a href=<% UrlService.download_blob_url(distribution.resume) %>>Resume URL</a>
        </td>
        <td>
          <%=link_to distribution.matching_profile.partner.title,  "mailto:#{distribution.matching_profile.partner.email}" %>
        </td>
        <td>
          <%= distribution.status %>
        </td>
        <td>
          <%= distribution.assignee_id ? User.find(distribution.assignee_id).full_name : " " %>
        </td>
        <td>
          <%= distribution.comments %>
        </td>
      </tr>
    <% end %>
  </table>
<% end %>

Answer 1

这是一个适用于您的示例:http://jsfiddle.net/wYPWL/

HTML 示例:

<input type="checkbox" id="selectAll" value="selectAll"> Select / Deselect All<br/><br/>

<input type="checkbox" name="foo" value="bar1"> Bar 1<br/>
<input type="checkbox" name="foo" value="bar2"> Bar 2<br/>
<input type="checkbox" name="foo" value="bar3"> Bar 3<br/>
<input type="checkbox" name="foo" value="bar4"> Bar 4<br/>

Javascript:

$('#selectAll').click(function() {
   if (this.checked) {
       $(':checkbox').each(function() {
           this.checked = true;                        
       });
   } else {
      $(':checkbox').each(function() {
           this.checked = false;                        
       });
   } 
});

无论您的复选框的名称如何，这都将起作用。如果您真的只想定位上面代码中显示的复选框，您可以将 $(':checkbox') 替换为 $('input[id^="distribution_ids"]') 这是 jQuery 定位 ID 以 distribution_ids

开头的输入元素的方法