在提交表单之前显示在表单中输入的数据

问题描述：

我有一个表单，其中有多个输入需要由用户输入，但在提交表单之前，我希望向用户显示他们的i / p将如何显示。

i have a form where there are multiple input that needs to be entered by the user, but before submitting the form i wish to show the users how their i/p will get displayed.

我的页面分为两部分，一部分包含表格，两部分包含布局

My page is divided into 2 parts, one part contains the form and 2 contains the layout

<form class="form-horizontal"  enctype="multipart/form-data" role="form" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="POST">
    <div class="form-group">
        <label for="input01" class="col-sm-2 control-label">First Name</label>
            <div class="col-sm-4">
                <input type="text" class="form-control" name="firstname" id="input01">
            </div>
    </div>

    <div class="form-group">
        <label for="input01" class="col-sm-2 control-label">Last Name</label>
            <div class="col-sm-4">
                <input type="text" class="form-control" name="lastname" id="input02">
            </div>
    </div>

    <div class="form-group">
        <label for="input01" class="col-sm-2 control-label">Location</label>
            <div class="col-sm-4">
                <input type="text" class="form-control" name="location" id="input03">
            </div>
    </div>
</form>

现在我要显示上述数据的地方将是不同的div，这需要完成在提交按钮之前例如：

Now the place that i want to display the above data will be different div and this needs to be done before submit button eg:

当用户输入时我希望

when user types firstname, at the same instance it should be displayed under <div id="firstname"></div>,

when user types lastname , at the same instance it should be displayed under <div id="lastname "></div>,

when user types location, at the same instance it should be displayed under <div id="location"></div>,

目前我只使用单输入的代码

Currently the code that i have works just for single input

<input type="text" value="">
<p></p>

$( "input" )
  .keyup(function() {
    var value = $( this ).val();
    $( "p" ).text( value );
  })
  .keyup();

但我想要一些可以适用于任意数量输入的东西，如上例所述。任何人都可以帮助我吗

but i want something that can work for any number of input as explained in above example. Can anyone please help me with it

答

你可以添加特殊的数据 - 归属于输入，以便澄清输入文本的放置位置。您可以按照自己的意愿调用它，前缀数据 - ，让我们称之为 data-view-id 。然后将此属性添加到输入：

You can add special data-attribute to your input so as to clarify where the entered text should be placed. You can call it like you want, prefixing data-, let's call it data-view-id. Then you add this attribute to your input:

 <input type="text" class="form-control" name="location" id="input01" data-view-id="#location">

下一步 - 修改你的js：

Next - modify your js:

$( "input" )
  .keyup(function() {
      var value = $( this ).val(),
          dataViewId = $( this ).data( "view-id" );  // get your data-attribute value
      // use this value as a selector:
      $( dataViewId ).text( value );
  })
  .keyup();

更进一步 - 如果您要放置文本的div的ID与 name 输入 - 然后你甚至不需要数据 -attribute：

Even further - if ids of divs, where you want to place text are same as names of inputs - then you don't even need a data-attribute:

$( "input" )
  .keyup(function() {
      var value = $( this ).val(),
          dataViewId = $( this ).attr( "name" );  // get your value using `name`
      // use this value as a selector:
      $( "#" + dataViewId ).text( value );
  })
  .keyup();

顺便说一下 - id 属性应该在页面上唯一。因此，拥有与您目前相同的 id 的多个元素是违法的。

And by the way - id property should be unique on a page. So it's illegal to have several elements with same id, as you currently have.

在提交表单之前显示在表单中输入的数据

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