我正在处理表单,我正在尝试创建一个执行以下操作的onkeydown
函数:
input
)(让这个工作正常)input
调用相同的onkeydown
函数(卡在这里!)尝试增加++但不工作?
这是我要去的地方:
<html>
<head>
</head>
<body>
<form>
<input type ="text" OnKeydown = "tab(event)" />
<div id ="insert">
</div>
</form>
</body>
<script>
function tab(event) {
if (event.keyCode == 9) {
var ins = '<input type ="text" OnKeydown = "tab(event)"/>';
document.getElementById("insert").innerHTML=ins;
ins++;
}
};
</script>
</html>
答案 0 :(得分:3)
兴趣点是:
function tab(event) {
if (event.keyCode == 9) {
// remove the event listener for the old element
event.target.removeEventListener('keydown', tab);
var ins = document.createElement("input");
ins.type = "text";
ins.autofocus = true;
document.getElementById("insert").appendChild(ins);
ins.addEventListener('keydown', tab, false);
}
}
window.addEventListener('DOMContentLoaded', function(e) {
document.getElementsByTagName("input")[0].addEventListener('keydown', tab, false);
}, false);
<form>
<input type ="text"/>
<div id ="insert">
</div>
</form>
为了添加一行输入,如您必须创建的注释中所述,并在表中添加一个新行,创建3个单元格,并为每个单元格添加相应的输入字段并设置tab事件处理程序,例如on最后一个细胞。
要在表格中创建新行,您可以参考insertRow,而为了添加新单元格,您可以查看insertCell
function tab(event) {
if (event.keyCode == 9) {
event.target.removeEventListener('keydown', tab);
var table = document.getElementById('tbl').getElementsByTagName('tbody')[0];
var newRow = table.insertRow(table.rows.length);
var newCell = newRow.insertCell(-1);
var ins = document.createElement("input");
ins.type = "number";
ins.autofocus = true;
newCell.appendChild(ins);
newCell = newRow.insertCell(-1);
ins = document.createElement("input");
ins.type = "text";
ins.autofocus = true;
newCell.appendChild(ins);
newCell = newRow.insertCell(-1);
ins = document.createElement("input");
ins.type = "number";
ins.autofocus = true;
newCell.appendChild(ins);
ins.addEventListener('keydown', tab, false);
setTimeout(function () {
ins.focus();
}, 10);
}
}
window.addEventListener('DOMContentLoaded', function (e) {
document.getElementsByTagName("input")[0].addEventListener('keydown', tab, false);
}, false);
<form>
<input type="text"/>
<div id="insert">
<table id="tbl">
<thead>
<tr>
<th>Number</th>
<th>Text</th>
<th>Number</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</form>
答案 1 :(得分:1)
<html>
<head>
</head>
<body>
<form>
<input type ="text" OnKeydown = "tab(event)" />
<div id ="insert">
</div>
</form>
</body>
<script>
function tab(event) {
if (event.keyCode == 9)
{
var input = document.createElement("input");
input.type = "text";
input.setAttribute("OnKeydown","tab(event)");
// var ins = '<input type ="text" OnKeydown = "tab(event)"/>';
var div= document.getElementById("insert")
div.appendChild(input);
}
};
</script>
</html>