提交表单一种方式

 https://files.cnblogs.com/files/php-qiuwei/sweetalert.min.js

https://files.cnblogs.com/files/php-qiuwei/sweetalert.css

<form action="" method="post" id="regForm">
    <div>
        <div class="log_tex">
            <label style="font-size: 0.14rem;">认筹ETH数量</label>
            <input type="text" name="buynum" id="buynum"  onkeyup="duihuan()" onfocus="this.value='';" autocomplete="off"/>
            <!-- <input type="text" placeholder="ETH数量" name="username" id="username"> -->
        </div>
        <div class="log_tex">
            <label style="font-size: 0.14rem;">本人ETH钱包</label>
            <input type="text" name="selfaddress" id="selfaddress"  autocomplete="off"/>
            <!-- <input type="password" placeholder="本人ETH钱包" name="password" id="password"> -->
        </div>
        <div class="log_tex">
            <label style="font-size: 0.14rem;">官方ETH钱包</label>
            <input type="text" name="guanfangaddress" id="guanfangaddress" />
            <div style="text-align:center;"></div>
            <!-- <input type="password" placeholder="官方ETH钱包" name="repassword" id="repassword"> -->
        </div>

        <div class="log_go" style="margin-top:0px;">
            <button style="background:#54A0E1;color:#fff;">
                <span><a href="javascript:void (0)" onclick="register()" >确认</a></span>
            </button>
      
        </div>
    </div>
</form>

<script>
    function register(){
        var guanfangaddress = $("#guanfangaddress").val();
        var buynum = $("#buynum").val();
        var selfaddress = $("#selfaddress").val();

        if(buynum=='' || buynum.replace(/s/g,'') =='' || isNaN(buynum) || buynum<=0 ){
            swal("失败", "请填写数量", "error");
            return;
        }
        if(selfaddress=='' || selfaddress.replace(/s/g,'') =='' ){
            swal("失败", "请填写地址", "error");
            return;
        }
        if(guanfangaddress==''){
            swal("失败", "请填写官方地址", "error");
            return;
        }


        $("#regForm").submit();
    }
</script>