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javascript新建標(biāo)簽,判斷鍵盤(pán)輸入,以及判斷焦點(diǎn)(示例代碼)

 更新時(shí)間：2013年11月25日 08:38:46   投稿：jingxian  
這篇文章主要介紹了javascript新建標(biāo)簽,判斷鍵盤(pán)輸入,以及判斷焦點(diǎn)(示例代碼)。需要的朋友可以過(guò)來(lái)參考下，希望對(duì)大家有所幫助

如下所示：

復(fù)制代碼 代碼如下:

function saomiao(event,n)
{
     var code=0;
     code=event.keyCode;//鍵盤(pán)輸入事件
     if(code=='13')//如果鍵盤(pán)輸入回車(chē)鍵
     {
          if(n>0)//開(kāi)始判斷參數(shù)
          {
               if(document.getElementById('logisticsno').value=='')
          {
           alert('請(qǐng)掃描輸入運(yùn)單號(hào)!');
                     var r=document.getElementById('logisticsno');
                     r.focus();
           return false;
                   }
             else if(document.activeElement.name!='deliver_money')//document.activeElement.name焦點(diǎn)所在的元素名
             {
                     var r=document.getElementById('deliver_money');
                     r.focus();       
               }
             else//如果所有條件都滿足
             {
                 var r=document.getElementById('logisticsno');
                     r.focus();
                     var f=document.createElement('form');//開(kāi)始新建表單
                     f.action='/modules/logistics/start.php';
                     document.body.appendChild(f);//添加至body
                    
                     var e=document.createElement('input');//新建表單元素
                     e.type='hidden';
                     e.name='act';
                     e.id='act';
                     e.value='logisticsno';
                     f.appendChild(e);//添加至表單
                    
                     var data_id=0;
                     var g=document.getElementsByName("orderdataid_no[]");
                     var h=0;
                     for(var h=0;h<g.length;h++)
                     {
                      data_id=g[h].value;
                          }

                     var order_no=0;
                     var gg=document.getElementsByName("order_no[]");
                     var hh=0;
                     for(var hh=0;hh<gg.length;hh++)
                     {
                      order_no=gg[hh].value;
                     }
                    
                     var k=document.createElement('input');
                     k.type='hidden';
                     k.name='order_no';
                     k.id='order_no';
                     k.value=order_no;
                     f.appendChild(k);
                    
                     f.submit();//表單提交
                   }  
               }   
      }
     }
<body onKeyPress="javascript:saomiao(event,555);">//開(kāi)始監(jiān)控鍵盤(pán)輸入

 

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