Question

Javascript文件，如果偶数位置具有奇数，则所有数字应显示在txt2中，如果奇数位数具有偶数，则所有数字应显示在txt3中，从用户txt1输入数组在循环中，i + 2不能正常工作，一次显示一个数字，但文本框中不是所有的偶数和奇数：

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<head>
    <title></title>
</head>
<body>
    <table>
        <tr>
            <td>
                Enter data
            </td>
            <td>
                <input type="text" id="txt1" />
            </td>
            <td>
                <input type="text" id="txt2" />
            </td>
            <td>
                <input type="text" id="txt3" />
            </td>
        </tr>
        <tr>
            <td>
                <input type="button" id="b1" value="REsult" onclick="validate()"/>
            </td>
        </tr>
    </table>
    <script>
function validate()
{
    var a = document.getElementById("txt1").value.split(",");
    for(var i=0;i<a.length;i+2)
    {
        if(a[i]%2!=0)
        {
            document.getElementById("txt2").value = a[i];
        }
        else
        {
            document.getElementById("txt2").value = " ";
        }
    }
        for(var j=1;j<=a.length;j+2)
        {
            if(a[j]%2==0)
            {
                document.getElementById("txt3").value = a[j];
            }
            else
            {
                document.getElementById("txt3").value = " ";
            }
        }

}

    </script>
</body>
</html>

design page ] 1

Answer 1

试试这个：

＆＃13;

<!DOCTYPE html>
<html>

<head>
    <title>d</title>
    <style></style>
    <meta charset="UTF-8">
    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
</head>

<body>
    <script>
    function validate() {
        var a = document.getElementById("txt1").value.split(",");
        document.getElementById("txt2").value = '';
        document.getElementById("txt3").value = '';
        for (var i = 0; i < a.length; i += 2) {
            if (a[i] % 2 != 0) {
                document.getElementById("txt2").value += a[i] + ',';
            }
        }
        for (var j = 1; j <= a.length; j += 2) {
            if (a[j] % 2 == 0) {
                document.getElementById("txt3").value += a[j] + ',';
            }
        }
        document.getElementById("txt2").value = document.getElementById("txt2").value.replace(/,$/, '');
        document.getElementById("txt3").value = document.getElementById("txt3").value.replace(/,$/, '');

    }
    </script>
    <table>
        <tr>
            <td>
                Enter data
            </td>
            <td>
                <input type="text" id="txt1" />
            </td>
            <td>
                <input type="text" id="txt2" />
            </td>
            <td>
                <input type="text" id="txt3" />
            </td>
        </tr>
        <tr>
            <td>
                <input type="button" id="b1" value="REsult" onclick="validate()" />
            </td>
        </tr>
    </table>
</body>

</html>

＆＃13;

在javascript

1 个答案: