Javascript 使用用户输入动态创建表
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Dynamically creating table with user input
提问by methuselah
I'm currently trying to dynamically create a table using JS and HTML.
我目前正在尝试使用 JS 和 HTML 动态创建一个表。
But at the moment it cannot seem to retrieve the values from user entry.
但目前它似乎无法从用户条目中检索值。
What I am I doing wrong?
我做错了什么？
Thanks in advance!
提前致谢！
<script type="text/javascript">
function createTable(num_rows, numcols)
{
var num_rows = document.tablegen.rows.value;
var num_cols = document.tablegen.cols.value;
var theader = '<table>\n';
var tbody = '';
for( var i=0; i<num_rows;i++)
{
// create each row
tbody += '<tr>';
for( var j=0; j<num_cols;j++)
{
// create cell
tbody += '<td>';
tbody += 'Cell ' + i + ',' + j;
tbody += '</td>'
}
// closing row table
tbody += '</tr>\n';
}
var tfooter = '</table>';
// TO DO
return theader + tbody + tfooter;
}
</script>
</head>
<body>
<form name="tablegen">
<label>Rows: <input type="text" name="rows"/></label><br />
<label>Cols: <input type="text" name="cols"/></label><br/>
<input name="generate" type="button" value="Create Table!" onclick='createTable();'/>
</form>
<script type="text/javascript">
document.write(createTable());
</script>
回答by Book Of Zeus
I would not recommend to use document.write. read this
我不建议使用 document.write。读这个
Why is document.write considered a "bad practice"?
为什么 document.write 被认为是“不好的做法”？
Try this:
尝试这个：
<script type="text/javascript">
function createTable()
{
var num_rows = document.getElementById('rows').value;
var num_cols = document.getElementById('cols').value;
var theader = '<table border="1">\n';
var tbody = '';
for( var i=0; i<num_rows;i++)
{
tbody += '<tr>';
for( var j=0; j<num_cols;j++)
{
tbody += '<td>';
tbody += 'Cell ' + i + ',' + j;
tbody += '</td>'
}
tbody += '</tr>\n';
}
var tfooter = '</table>';
document.getElementById('wrapper').innerHTML = theader + tbody + tfooter;
}
</script>
</head>
<body>
<form name="tablegen">
<label>Rows: <input type="text" name="rows" id="rows"/></label><br />
<label>Cols: <input type="text" name="cols" id="cols"/></label><br/>
<input name="generate" type="button" value="Create Table!" onclick='createTable();'/>
</form>
<div id="wrapper"></div>
You can also use the insertRowand insertCell.
您还可以使用insertRow和insertCell。
read more:
阅读更多：
https://developer.mozilla.org/en/Traversing_an_HTML_table_with_JavaScript_and_DOM_Interfaces
https://developer.mozilla.org/en/Traversing_an_HTML_table_with_JavaScript_and_DOM_Interfaces
http://www.w3schools.com/js/tryit.asp?filename=try_dom_table_insertrow
http://www.w3schools.com/js/tryit.asp?filename=try_dom_table_insertrow
回答by antyrat
Instead of returnin your function you need to paste table to the document try to write something like this:
return您需要将表格粘贴到文档中，而不是在您的函数中尝试编写如下内容：
instead:
反而：
return theader + tbody + tfooter;
write
写
document.write(theader + tbody + tfooter)
回答by Praveen Kumar Burman
var fnPuzzel = {
max: 9,
min: 1,
rowControl: null,
colControl: null,
init: function (o) {
if (o) {
if ($('#' + o.rowControl))
rowControl = $('#' + o.rowControl);
if ($('#' + o.columnControl))
colControl = $('#' + o.columnControl);
$('#' + o.button).bind('click', fnPuzzel.createTable);
}
},
createTable: function () {
var rows = $(rowControl).val();
var columns = $(colControl).val();
var table = $('<table>');
for (var rowCount = 0; rowCount < rows; rowCount++) {
var tr = $('<tr>');
for (var columnCount = 0; columnCount < columns; columnCount++) {
$(tr).append($('<td>'));
}
$(table).append(tr);
}
$('.container').empty().append($(table).html()).find('td').bind('click', fnPuzzel.selectColumn);
var delay = parseInt(Math.random() * 3000);
setTimeout(fnPuzzel.selectRandom, delay);
},
selectColumn: function () {
var cell = this;
if (!$(cell).hasClass('selected'))
$(cell).addClass('selected');
},
selectRandom: function () {
var mx = $('.container td').not('.selected').length;
var mn = 0;
var randomCell = mn + Math.floor(Math.random() * (mx + 1 - mn));
if (randomCell > 0)
$('.container td').not('.selected').eq(randomCell).addClass('random');
}
}
回答by keerthu sunil
for( var i=0; i<num_rows;i++)
{
tbody += '<tr>';
for( var j=0; j<num_cols;j++)
{
tbody += '<td>';
tbody += '<input type="text">';// to display or type content
tbody += '</td>'
}
tbody += '</tr>\n';
}
var tfooter = '</table>';
document.getElementById('wrapper').innerHTML = theader + tbody + tfooter;
}
}
回答by Franklin CI
// first you need to import jquery library
// detail is id of the table
$(function(){
// add new row
$('.add').click(function(){
var tr = '<tr>'+
'<td><input type="text" name="product[]" required class="form-control product" ></td>'+
'<td><input type="text" name="quantity[]" required class="form-control quantity"></td>'+
'<td><input type="text" name="product[]" required class="form-control product" ></td>'+
'<td><input type="text" name="amount[]" required class="form-control amount"></td>'+
'<td><input type="button" class="btn btn-danger remove" value="-"></td>'+
'</tr>';
$('.details').append(tr);
});
