html5表單驗證在Codeigniter視圖文件中

Question

這是我簡單的html表單代碼

<form method="post" action=<?php echo base_url()."index.php/controller_bookplot2";?> 
 name="frmbooking" id="frmbooking">
  <div class="marginbtm5">
      <select name="name_title" class="dropdown" id="name_title" required>
        <option value="Mr.">Mr.</option>
        <option value="Miss">Miss</option>
        <option value="Mrs">Mrs</option>
        <option value="Dr.">Dr.</option>
      </select>

      <img src=<?php echo base_url()."images/rightmarked.gif";?> title="mandetory"> 
  </div>
  <div class="marginbtm5">
    <input name="name" type="text" class="input validate_B" id="name" onfocus="if (this.value
      == 'Full Name') {this.value=''}" onblur="if(this.value == '') {
      this.value='Full Name'}" value="Full Name" required>

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory">
  </div>
  <div class="marginbtm5">
    <input name="address" type="text" class="input validate_B" id="add" onfocus="if
      (this.value == 'Address') {this.value=''}" onblur="if(this.value ==
      '') { this.value='Address'}" value="Address" required>

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory">
  </div>
  <div class="marginbtm5">
    <input name="email" type="text" class="input validate_B" id="email" onfocus="if
     (this.value == 'Email') {this.value=''}" onblur="if(this.value ==
     '') { this.value='Email'}" required  value="Email" >

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory"
     style="display:none;">
  </div>
  <div class="marginbtm5">
    <input name="dob" type="text" class="input" value="Birth Date" required id="datepicker" >

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory"> 
  </div>
 <div class="marginbtm5">
    <input name="mobno" type="text" class="input validate_B" maxlength="45" onfocus="if
   (this.value == 'Mobile (10 digit mobile no. eg 9812345678)')
    {this.value=''}" onblur="if(this.value == '') { this.value='Mobile
   (10 digit mobile no. eg 9812345678)'}" value="Mobile (10 digit mobile no. eg
    9812345678)" id="mob_no" pattern="[789][0-9]{9}" required     
        onkeyup="javascript:ValidateText(this)" >
  </div>      
    <input name="btnSubmit" type="image" src=<?php echo base_url()."images/submit.jpg";?> value="Submit" onclick="return validate();">
</form>

我的表單中還有許多其他字段。 但是我只在這里放了5個字段。 當我單擊提交時，它將直接顯示html5必填消息，用於移動電話號碼字段。 它不首先驗證姓名，地址，電子郵件，生日字段。 那么我在做什么錯呢？

Answer 1

它不起作用，因為您正在給value屬性賦予remove value屬性並嘗試這樣

<form method="post" action=<?php echo base_url()."index.php/controller_bookplot2";?> 
 name="frmbooking" id="frmbooking">
  <div class="marginbtm5">
      <select name="name_title" class="dropdown" id="name_title" required>
        <option value="">--Please select type</option>
        <option value="Mr.">Mr.</option>
        <option value="Miss">Miss</option>
        <option value="Mrs">Mrs</option>
        <option value="Dr.">Dr.</option>
      </select>

      <img src=<?php echo base_url()."images/rightmarked.gif";?> title="mandetory"> 
  </div>
  <div class="marginbtm5">
    <input name="name" type="text" class="input validate_B" id="name" onfocus="if (this.value
      == 'Full Name') {this.value=''}" onblur="if(this.value == '') {
      this.value='Full Name'}" Placeholder="Full Name" required>

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory">
  </div>
  <div class="marginbtm5">
    <input name="address" type="text" class="input validate_B" id="add" onfocus="if
      (this.value == 'Address') {this.value=''}" onblur="if(this.value ==
      '') { this.value='Address'}" Placeholder="Address" required>

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory">
  </div>
  <div class="marginbtm5">
    <input name="email" type="text" class="input validate_B" id="email" onfocus="if
     (this.value == 'Email') {this.value=''}" onblur="if(this.value ==
     '') { this.value='Email'}" required  Placeholder="Email" >

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory"
     style="display:none;">
  </div>
  <div class="marginbtm5">
    <input name="dob" type="text" class="input" Placeholder="Birth Date" required id="datepicker" >

    <img src=<?php echo base_url()."images/rightmarked.gif";?> title=" mandetory"> 
  </div>
 <div class="marginbtm5">
    <input name="mobno" type="text" class="input validate_B" maxlength="45" onfocus="if
   (this.value == 'Mobile (10 digit mobile no. eg 9812345678)')
    {this.value=''}" onblur="if(this.value == '') { this.value='Mobile
   (10 digit mobile no. eg 9812345678)'}" value="Mobile (10 digit mobile no. eg
    9812345678)" id="mob_no" pattern="[789][0-9]{9}" required     
        onkeyup="javascript:ValidateText(this)" >
  </div>      
    <input name="btnSubmit" type="image" src=<?php echo base_url()."images/submit.jpg";?> value="Submit" onclick="return validate();">
</form>

如果您向輸入標簽添加值，那么它將不會驗證該字段，因為該字段已具有值

Answer 2

無需輸入onfocus="if (this.value == 'Full Name') {this.value=''}" onblur="if(this.value == '') { this.value='Full Name'}" value="Full Name"

這可以通過html屬性placeholder='Full Name'來實現