Adding multiple inputs | 易学教程

问题

I want to add multiple text inputs, but how? Just putting the number of inputs I want on screen is the only input that I have declared in HTML.

Let's say that I type the number 3 then when I press the button. The number of inputs I entered should appear. It actually only adds one input per click and ignores the typed data in the input. How can I fix this?

<!DOCTYPE html>
<html>
<head>
    <title>HTML</title>
</head>
<script src="js/jquery-3.1.0.min.js"></script>
<script src="js/test.js"></script>
<body>          
    <input type="text" id="inp1" name="inp1" placeholder="Number of inputs">    
    <button type="button" name="btn" id="btn">Add</button>

    <table id="table" name="table">
        <tbody></tbody>
    </table>    
</body>
</html>

$(document).ready(function() {
    $(document).on('click', '#btn', function() {    
        $('#table tbody').append('<input></input>')
    }); 
});

回答1:

Firstly note that you cannot just append an input as a child of a tbody. You need to place it within a td, which in turn needs to be in a tr. Also note that input is self closing, so you should append only <input />.

To achieve what you need you can use a simple for loop, using the entered value as the iteration limiter (once you've parsed it to an integer). Try this:

$(document).ready(function() {
  $(document).on('click', '#btn', function() {
    for (var i = 0; i < parseInt($('#inp1').val(), 10); i++) {
      $('#table tbody td').append('<input />')
    }
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="inp1" name="inp1" placeholder="Number of inputs">
<button type="button" name="btn" id="btn">Add</button>

<table id="table" name="table">
  <tbody>
    <tr><td></td></tr>
  </tbody>
</table>

回答2:

Try this:

$(document).ready(function() {
    
    $("#btn").on("click",function(){
        
        var number = $("#inp1").val();
        
        number = parseFloat(number);
        
        for (var i=1; i <= number; i++){
            
            $("#table tbody").append("<br>Number " + i + " : <input type=text><br>")
            
        }
        
    })
    
    
})

<input type="text" id="inp1" name="inp1" placeholder="Number of inputs">  

<button type="button" name="btn" id="btn">Add</button>
<table id="table" name="table">
        <tbody></tbody>
</table>    
        
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>

来源：https://stackoverflow.com/questions/39808463/adding-multiple-inputs

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