表单填写时用回车代替TAB的实现方法_表单特效

关键之处在于tabindex，其设计思想是：为每个表单元素设置一个tabindex，其值分别为前一个表单元素的tabindex的值加一，函数的功能就是当用户按下回车键时先将当前tabindex的值加一，而后逐一与每个表单元素的tabindex值进行对比，如若相等，则将焦点移至该表单元素之上。

首先，我们需要在表单体中设定一个onkeyup事件：

其次，在每一个表单元素中设定一个tabindex值，假定该表单有三个元素，则我们分别设定tabindex值如下：


<br><br>最后，写出changefocus函数如下： <BR>function newinfo_form_onkeyup() <BR>{ <BR>key=window.event.keyCode; <BR>if(key==0xD)//判断是否按下回车键 <BR>{ <BR>CurTabIndex=event.srcElement.tabIndex 1//将当前tabindex的值加1 <BR>for (n=0;n<newinfo_form.elements.length;n ) <BR>{ <BR>if (newinfo_form.elements[n].tabIndex==CurTabIndex) //找到下一个表单元素 <BR>{ <BR>newinfo_form.elements[n].focus(); //移动焦点 <BR>return true; <BR>} <BR>} <BR>} <BR>} </div> <div class=""> <ul class="m-news-opt fix"> <li class="opt-item"> <a href='/JavaScript-233179.html' target='_blank'><p>< 上一篇</p><p class="ellipsis">可多次使用的仿126邮箱选项卡的源码_javascript技巧</p></a> </li> <li class="opt-item ta-r"> <a href='/JavaScript-233181.html' target='_blank'><p>下一篇 ></p><p class="ellipsis">javascript实现的左右选择框效果代码_表单特效</p></a> </li> </ul> </div> </div> </div> <div class="g-title fix"> <h2 class="title-txt">人气教程排行</h2> </div> <div class="m-rank u-dashed mb40"> <ul> <li class="rank-item"> <a href="/JavaScript-60002.html" title='vue2 设置router-view默认路径的实例' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">213次</span> <span class="g-sort-num top">1</span> vue2 设置router-view默认路径的实例 </a> </li> <li class="rank-item"> <a href="/JavaScript-56926.html" title='Vue-路由导航菜单栏的高亮设置方法' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">213次</span> <span class="g-sort-num second">2</span> Vue-路由导航菜单栏的高亮设置方法 </a> </li> <li class="rank-item"> <a href="/JavaScript-56852.html" title='基于Axios 常用的请求方法别名(详解)' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">213次</span> <span class="g-sort-num third">3</span> 基于Axios 常用的请求方法别名(详解) </a> </li> <li class="rank-item"> <a href="/JavaScript-39788.html" title='JavaScript+canvas实现七色板效果实例' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">213次</span> <span class="g-sort-num ">4</span> JavaScript+canvas实现七色板效果实例 </a> </li> <li class="rank-item"> <a href="/JavaScript-281548.html" title='实现vuex的初始化方法' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">5</span> 实现vuex的初始化方法 </a> </li> <li class="rank-item"> <a href="/JavaScript-238997.html" title='jQuery：当鼠标快速移动时无法触发mouseleave事件的问题解决' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">6</span> jQuery：当鼠标快速移动时无法触发mouseleave事件的问题解决 </a> </li> <li class="rank-item"> <a href="/JavaScript-234597.html" title='Array.slice()与Array.splice()的返回值类型_基础知识' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">7</span> Array.slice()与Array.splice()的返回值类型_基础知识 </a> </li> <li class="rank-item"> <a href="/JavaScript-60647.html" title='微信小程序使用swiper组件实现层叠轮播图' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">8</span> 微信小程序使用swiper组件实现层叠轮播图 </a> </li> <li class="rank-item"> <a href="/JavaScript-57684.html" title='element-ui 限制日期选择的方法(datepicker)' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">9</span> element-ui 限制日期选择的方法(datepicker) </a> </li> <li class="rank-item"> <a href="/JavaScript-57417.html" title='vue-baidu-map 进入页面自动定位的解决方案(推荐)' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">10</span> vue-baidu-map 进入页面自动定位的解决方案(推荐) </a> </li> <li class="rank-item"> <a href="/JavaScript-54331.html" title='JS实现元素上下左右移动效果' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">11</span> JS实现元素上下左右移动效果 </a> </li> <li class="rank-item"> <a href="/JavaScript-32878.html" title='node.js中的emitter.on方法使用说明' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">212次</span> <span class="g-sort-num ">12</span> node.js中的emitter.on方法使用说明 </a> </li> <li class="rank-item"> <a href="/JavaScript-251986.html" title='在js中如何实现图片左右滑动' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">211次</span> <span class="g-sort-num ">13</span> 在js中如何实现图片左右滑动 </a> </li> <li class="rank-item"> <a href="/JavaScript-65218.html" title='layui button 按钮弹出提示窗口,确定才进行的方法' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">211次</span> <span class="g-sort-num ">14</span> layui button 按钮弹出提示窗口,确定才进行的方法 </a> </li> <li class="rank-item"> <a href="/JavaScript-53968.html" title='深入理解Vue生命周期、手动挂载及挂载子组件' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">211次</span> <span class="g-sort-num ">15</span> 深入理解Vue生命周期、手动挂载及挂载子组件 </a> </li> <li class="rank-item"> <a href="/JavaScript-32108.html" title='JS 使用for循环遍历子节点查找元素' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">211次</span> <span class="g-sort-num ">16</span> JS 使用for循环遍历子节点查找元素 </a> </li> <li class="rank-item"> <a href="/JavaScript-286609.html" title='bootstrap如何设置表单必填' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">210次</span> <span class="g-sort-num ">17</span> bootstrap如何设置表单必填 </a> </li> <li class="rank-item"> <a href="/JavaScript-286358.html" title='bootstrap4兼容哪些浏览器' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">210次</span> <span class="g-sort-num ">18</span> bootstrap4兼容哪些浏览器 </a> </li> <li class="rank-item"> <a href="/JavaScript-247980.html" title='jQuery实现追加数组并去重功能' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">210次</span> <span class="g-sort-num ">19</span> jQuery实现追加数组并去重功能 </a> </li> <li class="rank-item"> <a href="/JavaScript-215560.html" title='jQuery实现的在线答题功能_jquery' class="item-name ellipsis" target="_blank"> <span class="g-art-count fr">210次</span> <span class="g-sort-num ">20</span> jQuery实现的在线答题功能_jquery </a> </li> </ul> </div> </div> </div> <!-- / 教程内容页 --> </div> </div> <!-- 页尾 --> <div class="footer"> 本站所有资源全部来源于网络，若本站发布的内容侵害到您的隐私或者利益，请联系我们删除！</div> <!-- / 页尾 --> <script type="text/javascript" src="/kan/js/read.js"></script> <div style="display:none"> <div class="login-box" id="login-dialog"> <div class="login-top"><a class="current" rel="nofollow" id="login1" onclick="setTab('login',1,2);" >登录</a></div> <div class="login-form" id="nav-signin"> <!-- <div class="login-ico"><a rel="nofollow" class="qq" id="qqlogin" target="_blank" href="/user-center-qqlogin.html"> QQ </a></div> --> <div class="login-box-form" id="con_login_1"> <form id="loginform" action="/user-center-login.html" method="post" onsubmit="return false;"> <p class="int-text"> <input class="email" id="username" name="username" type="text" value="用户名或Email" onfocus="if(this.value=='用户名或Email'){this.value='';}" onblur="if(this.value==''){this.value='用户名或Email';};" ></p> <p class="int-text"> <input class="password1" type="password" id="password" name="password" value="******" onBlur="if(this.value=='') this.value='******';" onFocus="if(this.value=='******') this.value='';" > </p> <p class="int-info"> <label class="ui-label"> </label> <label for="agreement" class="ui-label-checkbox"> <input type="checkbox" value="" name="cookietime" id="cookietime" checked="checked" value="2592000"> <input type="hidden" name="notforward" id="notforward" value="1"> <input type="hidden" name="dosubmit" id="dosubmit" value="1">记住我的登录 </label> <a rel="nofollow" class="aright" href="/user-center-forgetpwd.html" target="_blank"> 忘记密码？ </a></p> <p class="int-btn"><a rel="nofollow" id="loginbt" class="loginbtn"><span>登录</span></a></p> </form> </div> <form id="regform" action="/user-center-reg.html" method="post"> <div class="login-reg" style="display: none;" id="con_login_2"> <input type="hidden" name="t" id="t"/> <p class="int-text"> <input id="email" name="email" type="text" value="Email" onfocus="if(this.value=='Email'){this.value='';}" onblur="if(this.value==''){this.value='Email';};"></p> <p class="int-text"> <input id="uname" name="username" type="text" value="用户名或昵称" onfocus="if(this.value=='用户名或昵称'){this.value='';}" onblur="if(this.value==''){this.value='用户名或昵称';};"></p> <p class="int-text"> <input type="password" id="pwd" name="password" value="******" onBlur="if(this.value=='') this.value='******';" onFocus="if(this.value=='******') this.value='';"> </p> <p class="int-text1"><span class="inputbox"> <input id="validate" name="validate" type="text" value="验证码" onfocus="if(this.value=='验证码'){this.value='';}" onblur="if(this.value==''){this.value='验证码';};"> </span><span class="yzm-img"><img src="/user-checkcode-index" alt="看不清楚换一张" id="indexlogin"></p> <p class="int-info"> <label> <input value="" name="agreement" id="agreement" CHECKED="checked" type="checkbox"> 我已阅读<a rel="nofollow" href="/user-center-agreement.html">用户协议</a>及<a rel="nofollow" href="/user-center-agreement.html">版权声明</a></label> </p> <p class="int-btn"><input type="hidden" name="dosubmit"/> <a rel="nofollow" class="loginbtn" id="register"><span>注册</span></a></p> </div> </form> </div> </div> </div> </div> <script type="text/javascript" src="/kan/js/foot_js.js"></script> <script> var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?6dc1c3c5281cf70f49bc0bc860ec24f2"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); </script> <script type="text/javascript" src="/layui/layui.js"></script> <script> layui.use('code', function() { layui.code({ elem: 'pre', //默认值为.layui-code about: false, skin: 'notepad', title: 'php怎么实现数据库验证跳转代码块', encode: true //是否转义html标签。默认不开启 }); }); </script> </body> </html>