获取选中checkbox的value值

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<div class="modal fade" id="ggModal" tabindex="-1" role="dialog" aria-label-borderledby="myModallabel">   <div class="modal-dialog" role="document" style="width:1060px;">     <div class="modal-content">       <div class="modal-header">         <button type="button" class="close" data-dismiss="modal" aria-label-border="Close"><span aria-hidden="true">×</span></button>         <h4 class="modal-title" id="myModallabel-border">选择规格型号</h4>       </div>       <div class="modal-body">         <div class="form-group">           <div class="col-sm-2">             <input type="checkbox" value="度数：38°" name="ggCheckbox" /><span>度数：38°</span>           </div>           <div class="col-sm-2">             <input type="checkbox" value="产地：四川" name="ggCheckbox" /><span>产地：四川</span>           </div>           <div class="col-sm-2">             <input type="checkbox" value="类型：醇香型" name="ggCheckbox" /><span>类型：醇香型</span>           </div>         </div>       </div>       <div class="modal-footer">         <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>         <button type="button" class="btn btn-primary" id="subButton" onclick="selectGg()">保存</button>       </div>     </div>   </div> </div>

　　

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function selectGg() {   obj = document.getElementsByName("ggCheckbox");   check_val = [];   for(k in obj) {     if(obj[k].checked)       check_val.push(obj[k].value);   }   $("#ggInput").val(check_val); }