Question

我在我的网络应用程序搜索页面上使用了很好的Select2多个选择字段。人们可以按公司/行业/学校搜索人员。因为每个都有数百个可搜索的值，所以需要花费时间来加载正确的select2 css（大约1秒）。在漂亮的select2字段显示之前，可以在闪烁中看到旧丑陋的选择字段。附上两张显示转换的截图。

这是我的观看代码：

        <%= form_tag('', :method => :get) do %>
          <div class="row-fluid">  
            <div class="span4">
              <label>What industries have they worked in?</label>
                <%= select_tag "industry_ids", options_for_select((@visible_industries), params[:industry_ids]), { :placeholder => "Type to search...", :multiple => true, :id => "e3", :onchange => 'this.form.submit();' } %>
                <%= hidden_field_tag :&, params[:industry_ids] %>
            </div>
            <div class="span4">
              <label>What companies have they worked at?</label>
                <%= select_tag "company_ids", options_for_select((@visible_companies), params[:company_ids]), { :placeholder => "Type to search...", :multiple => true, :onchange => 'this.form.submit();' } %>
                  <%= hidden_field_tag :&, params[:company_ids] %>           
            </div>
            <div class="span4">
              <label>Where did they go to school?</label>
              <%= select_tag "school_ids", options_for_select((@visible_schools), params[:school_ids]), { :placeholder => "Type to search...", :multiple => true, :onchange => 'this.form.submit();' } %>
                <%= hidden_field_tag :&, params[:school_ids] %>
            </div>
            <div class="row-fluid">
          <% end %>
        </div>
      </div>

和控制器代码：

  def people
    @current_user = current_user

    @visible_positions = Position.where{ is_visible.eq('true') }
    @visible_educations = Education.where{ is_visible.eq('true') }

    @visible_companies = @visible_positions.order("LOWER(company)").all.map { |p| [ p.company, p.company ] }.uniq
    @visible_industries = @visible_positions.order("LOWER(industry)").all.map { |p| [ p.industry, p.industry ] }.uniq
    @visible_schools = @visible_educations.order("LOWER(school)").all.map { |e| [ e.school, e.school ] }.uniq

    @c = @visible_positions.where{company.in(my{params[:company_ids]})}.map(&:user_id)
    @i = @visible_positions.where{industry.in(my{params[:industry_ids]})}.map(&:user_id)
    @s = @visible_educations.where{school.in(my{params[:school_ids]})}.map(&:user_id)

    unless @c.empty? && @i.empty? && @s.empty?
      @users = User.find([@c,@i,@s].reject(&:empty?).reduce(:&))
    end

  end

最后，我在我的资产目录中有这个javascript（除了select2 css）：

$(document).ready(function(){

  $('select').select2({
    minimumInputLength: 1
  });
});

我该怎么做才能防止这种闪烁发生？谢谢。

enter image description here

Answer 1

我会发表评论作为答案，因为它解决了您的问题。

我的建议是隐藏选择，直到页面完全加载（并选择select2）。

在样式表中，添加input {display:none;}规则以隐藏它们（尽管visibility:hidden可能更好）。然后使用jQuery覆盖该规则$('input').css("display","inline");。

select2 css需要很长时间才能加载

1 个答案: