Question

我希望按Enter键时光标跳转到下一个输入字段。

如果我从下面的代码中删除“select”-tag，则可以正常工作。但我需要它与“选择”标签一起使用。我的javascript出了什么问题？

<html>
<head>
<script type="text/javascript">
function jump(elmnt,content)
{
if (event.keyCode == 13)
    {
    next=elmnt.tabIndex
    document.jumpForm.elements[next].focus()
    }
}
</script>
</head>
<body>
<p>This script automatically jumps to the next input field when the current field's maxlength has been reached.</p>
<form name="jumpForm">
<select style = "border: 4px solid red;" name = "typ" tabindex="0">
                        <option value = "+">Zugang</option>
                        <option value = "-">Abgang</option>
                        <option value = "b">Bruchware</option>
                        <option value = "x">Lagerort löschen</option>
                    </select>
<input size="3" tabindex="1" onkeyup="jump(this,this.value)">
<input size="3" tabindex="2" onkeyup="jump(this,this.value)">
<input size="3" tabindex="3" onkeyup="jump(this,this.value)">
</form>
</body>
</html>

Answer 1

那是因为现在元素的选项卡索引和数组索引是相同的，例如第一个文本输入的tabIndex为1，是第二个输入字段，因此它在jumpform.elements数组中也有索引1。如果删除select，它将成为第一个元素，因此下一个元素现在的索引为1并且会聚焦。

尝试next = elmnt.tabIndex + 1;。

Answer 2

我添加了

-eventlistener

-tabindex + 1

-onkeyup选择

 <html>
    <head>
    <script type="text/javascript">
    function jump(elmnt,content)
    {
    document.addEventListener('keyup', function(event) {

    if (event.keyCode == 13)
        {

        next=elmnt.tabIndex+1;
        document.jumpForm.elements[next].focus()
        }

    });
    }
    </script>
    </head>
    <body>
    <p>This script automatically jumps to the next input field when the current field's maxlength has been reached.</p>
    <form name="jumpForm">
    <select style = "border: 4px solid red;" name = "typ" tabindex="0" onkeyup="jump(this,this.value)">
                            <option value = "+">Zugang</option>
                            <option value = "-">Abgang</option>
                            <option value = "b">Bruchware</option>
                            <option value = "x">Lagerort löschen</option>
                        </select>
    <input size="3" tabindex="1" onkeyup="jump(this,this.value)">
    <input size="3" tabindex="2" onkeyup="jump(this,this.value)">
    <input size="3" tabindex="3" onkeyup="jump(this,this.value)">
    </form>
    </body>
    </html>

如何跳转到下一个表单输入字段

2 个答案: