文章來自：https://blog.csdn.net/qq_38215042/article/details/84675988

具體代碼如下所述：

if（條件語句）｛ return false;｝else{ return true;}if（條件語句）｛ return false;｝else{ return true;}if（條件語句）｛ return false;｝else{ return true;}

你寫的是不是上面這種情況？其實會出現(xiàn)只執(zhí)行了第一個這種情況，主要是你在if else語句中都加入了，return 用來返回結(jié)果，這種方式其實是沒有錯的，邏輯也很通順，不過你仔細(xì)想一想，你提交的時候如果返回的是true的話，那么你的form表單就相當(dāng)于收到了一個可以提交的命令，那么他就會進(jìn)行表單提交，后面的if else語句就不會執(zhí)行了。

解決的方法：我用的是一種標(biāo)記，先全部給他們true,如果后面的if語句條件判斷為false,就彈出一個彈框進(jìn)行提示，直到全部都符合條件了，才會給form表單返回一個true.進(jìn)行表單提交。

有好的方法歡迎評論呦~~~~~~~~~

1：js代碼

需要引入jquery

<script type="text/javascript">  function checkForm() {  var productName = true;   var chanDi = true;  var muChanLiang = true;  var zongChanLiang = true;  var xiangQiang = true;  var yuShouJia = true;  var phone = true;  var pattern = /^1[34578]/d{9}$/; //驗證手機(jī)號正則表達(dá)式   if ($("#userName") == "") {   alert("請輸入產(chǎn)品名稱!");   /* alert($("#gsp_add_img_23").val()); */   productName = false;  } else if ($("#candi").val() == "") {   alert("請輸入產(chǎn)地!");   chanDi = false;  } else if ($("#muchan").val() == "") {   alert("請輸入畝產(chǎn)量!");   muChanLiang = false;  }else if ($("#zongChan").val() == "") {   alert("請輸入總產(chǎn)量!");   zongChanLiang = false;  } else if ($("#xiangqing").val() == "") {   alert("請輸入產(chǎn)品詳情!");   xiangQiang = false;  } else if ($("#yushoujia").val() == "") {   alert("請輸入預(yù)售價!");   yuShouJia = false;  } else if (!pattern.test($("#userPhone").val())) {   alert("手機(jī)號格式錯誤");   phone = false;  }  if (productName == true && chanDi == true && muChanLiang == true &&    zongChanLiang == true && xiangQiang == true && yuShouJia == true && phone == true) {   $("#ListForm").submit();  }  }  </script>

2：form表單

<form action="$!webPath/new/fl_npsh.htm" method="post" name="ListForm"  id="ListForm" enctype="multipart/form-data" >  <!-- 類似首頁樓層模塊 -->  <div style="width: 1020px; margin: 0 auto;">  <div class="floor floor_purple"   style="width: 1011px; border-top: 1px solid #eee;">   <div class="liebiao"   <!-- 給后臺傳一個id -->   <input name="id" type="hidden" id="id" value="$!obj.id" />   </div>   <div class="liebiao">   <!-- <span class="liebiao_left" style="color:red">*</span> -->   <span class="liebiao_left">產(chǎn)品名稱：</span> <input id="userName"    type="text" name="product_name" class="shuruk"    placeholder="例：靈寶SOD蘋果(*必填項 *)" />   </div>   <div class="liebiao">   <span class="liebiao_left">產(chǎn)品產(chǎn)地：</span> <input type="text"    value="" name="product_origin" class="shuruk" id="candi"    placeholder="例：靈寶寺河山(*必填項 *)" />   </div>   <div class="liebiao">   <span class="liebiao_left">產(chǎn)品畝產(chǎn)量：</span> <input type="text"    value="" name="mu_yield" class="shuruk" id="muchan"    placeholder="例：每畝產(chǎn)量(*必填項 *)" />   </div>   <div class="liebiao">   <span class="liebiao_left">產(chǎn)品總產(chǎn)量：</span> <input type="text"    value="" name="sum_yield" class="shuruk"    placeholder="例：總產(chǎn)量(*必填項 *)" id = 'zongChan'/>   </div>   <div class="liebiao" style="height: 60px;">   <span class="liebiao_left"    style="display: inline-block; height: 60px; line-height: 30px; float: left;">產(chǎn)品詳情：</span>   <textarea type="text" value="" id="xiangqing"    name="product_details" class="shuruk02"    placeholder="例：產(chǎn)品種植標(biāo)準(zhǔn)、產(chǎn)品優(yōu)點、產(chǎn)品性能、儲存注意事項等(*必填項 *)"></textarea>   </div>   <div class="liebiao">   <span class="liebiao_left">產(chǎn)品預(yù)售參考價：</span> <input type="text"    value="" id="yushoujia" name="advance_price" class="shuruk"    placeholder="例：以每500g為單位(*必填項 *)" />   </div>   <div class="liebiao">   <span class="liebiao_left">站主聯(lián)系方式：</span> <input id="userPhone"    value="" name="phone" class="shuruk"     placeholder="(*必填項 *)" />   </div>   <div class="liebiao" style="margin-top: 30px;">   <input type="button" value="立即申請" class="tijiao" onclick="checkForm()">   </div>  </div>  </div> </form>