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  • js校验表单后提交表单的三种方法总结

    方法一:

     

    <script type="text/javascript">
             function check(form) {

              if(form.userId.value=='') {
                    alert("请输入用户帐号!");
                    form.userId.focus();
                    return false;
               }
           if(form.password.value==''){
                    alert("请输入登录密码!");
                    form.password.focus();
                    return false;
             }
             return true;
             }
    </script>

    <form action="login.do?act=login" method="post">
    用户帐号
      <input type=text name="userId" size="18" value="" >
    <br>
     登录密码     
    <input type="password" name="password" size="19" value=""/>     
     <input type=submit name="submit1" value="登陆" οnclick="return check(this.form)"> 

    </form>  

    方法二:

     

    <script type="text/javascript">
             function check(form) {

              if(form.userId.value=='') {
                    alert("请输入用户帐号!");
                    form.userId.focus();
                    return false;
               }
           if(form.password.value==''){
                    alert("请输入登录密码!");
                    form.password.focus();
                    return false;
             }
             return true;
             }
    </script>

    <form action="login.do?act=login" method="post" οnsubmit="return check(this)">
    用户帐号
      <input type=text name="userId" size="18" value="" >
    <br>
     登录密码     
    <input type="password" name="password" size="19" value=""/>     
     <input type=submit name="submit1" value="登陆"> 

    </form> 

    方法三:

     

    <script type="text/javascript">
             function check(form) {

              if(form.userId.value=='') {
                    alert("请输入用户帐号!");
                    form.userId.focus();
                    return false;
               }
           if(form.password.value==''){
                    alert("请输入登录密码!");
                    form.password.focus();
                    return false;
             }

              document.myform.submit();
    }
    </script>

    <form action="login.do?act=login" name="myform" method="post">
    用户帐号
      <input type=text name="userId" size="18" value="" >
    <br>
     登录密码     
    <input type="password" name="password" size="19" value=""/>     
    <input type=button name="submit1" value="登陆" οnclick="check(this.form)"> 

    </form>

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  • 原文地址:https://www.cnblogs.com/jalenFish/p/14099061.html
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