Question

我基本上想使用javascript,拥有两个相互依赖的文本箱。例如,如果我对文本框1中的编号X表示意见,我希望文本箱2立即更新x*2。如果我把X输入文本箱2,我就希望文本箱1自动更新X/2。这些价值永远是数量。

Edit:这里是我的html档案。谁能让我对为什么不工作感到担忧?

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <script type="text/javascript" src="scripts/jquery-1.7.2.js"></script>
    <script type="text/javascript">
        $("#text1").keyup(function(){
            $("#text2").val($(this).val() * 2);
        });
        $("#text2").keyup(function(){
            $("#text1").val($(this).val() / 2);
        });        
    </script>
</head>
<body>
    <input type="text" name="text1" size=3 maxlength=6>
    <input type="text" name="text2" size=3 maxlength=6>
</body>
</html>

Answer 1

在非常简单的情况下,应当这样做(,以下简称:

// in a <script>:
window.update = function() {
  var one = document.getElementById( one ),
      two = document.getElementById( two );    

  two.value = parseInt(one.value) * 2;
}

<!-- in your HTML: -->
<input id="one" type="text" onchange="update();" />
<input id="two" type="text" />

Answer 2

$("#textbox1").onkeyup(function() {
    $("#textbox2").val($(this).val() * 2);
});

$("#textbox2").onkeyup(function() {
    $("#textbox1").val($(this).val() / 2);
});

Answer 3

I m unable to test out the exact code you ll need for this right now, but the basic idea is to put an OnKeyUp event on each box and modify the other box through the script (using getElementById or whichever method you like)

如果有人先拿到,我将试图将一些法典合并起来。

Answer 4

利用交换活动或打碎机换面,更新其他盒子。

Answer 5

在该案中,应当做到:。

window.update = function() {
  var one = document.getElementById( one ),
      two = document.getElementById( two );    

  two.value = parseInt(one.value) * 2;
}
window.update1 = function() {
  var one = document.getElementById( one ),
      two = document.getElementById( two );    

  one.value = parseInt(two.value) / 2;
}

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