[英]Javascript array of arrays from html input table
I am trying to retrieve an array of arrays from a html text input table, but when I look at the array of arrays I get back, its filled with empty strings even though there should be lots of default text and I filled in some more of the cells. 我正在尝试从html文本输入表中检索数组的数组,但是当我查看数组的数组时,即使有很多默认文本,但它填充了空字符串,而我又填写了一些细胞。 Here is the javascript that is called followed by the php used to generate the table.
这是被调用的javascript,其后是用于生成表格的php。 When I click the button, I get
当我点击按钮时,我得到
",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"
” ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,”
<script type="text/javascript">
$(document).ready(function(){
$("#testButton2").click(function(){
var tableInfo=document.getElementById("myTable");
console.log(tableInfo);
var tableArray= [];
for (var i = 1; i < tableInfo.rows.length; i++) {
//var row = tableInfo.rows[i];
var rowArray = [];
for (var j = 0; j < tableInfo.rows[i].length; j++) {
rowArray.push(tableInfo.rows[i].cells[j].innerHtml);
}
tableArray.push(rowArray);
}
alert(tableArray.toString());
});
});
</script>
<?php
$table = "info.csv";
$id = "myTable";
$count = 0;
echo "<table id=".$id.">\n\n";
$f = fopen($table, "r");
while (($line = fgetcsv($f)) !== false) {
echo "<tr>";
foreach ($line as $cell) {
if ($count != 0) {
echo "<td><input value=" . htmlspecialchars($cell) . "></input></td>";
} else {
echo "<td>" . htmlspecialchars($cell) . "</td>";
}
}
echo "</tr>\n";
$count += 1;
}
fclose($f); echo "\n</table>";
?>
To convert a HTML table to 2d Array iterate its rows TableElement.rows
. 要将HTML表转换为2d数组,请迭代其行
TableElement.rows
。 While iterating over each row loop its cells TableRowElement.cells
and collect each textContent
of innerHTML
. 在迭代每行时,循环其单元格
TableRowElement.cells
并收集innerHTML
每个textContent
。
In a JavaScript ES6 functional fashion it would look like: 以JavaScript ES6 功能形式,它看起来像:
const tableToArray = tableId => [...document.querySelector(tableId).rows].map(row => [...row.cells].map(cell => cell.textContent) ); jQuery( $ => { $("#testBtn").on({ click () { const tableArray = tableToArray("#myTable"); console.log(tableArray); } }); });
<button id="testBtn">test</button> <table id="myTable"> <tr><td>a1</td><td>a2</td><td>a3</td></tr> <tr><td>b1</td><td>b2</td><td>b3</td></tr> <tr><td>c1</td><td>c2</td><td>c3</td></tr> <tr><td>d1</td><td>d2</td><td>d3</td></tr> </table> <script src="//code.jquery.com/jquery-3.3.1.js"></script>
Using ol'school for
loops and Array.push()
: 使用ol'school
for
循环和Array.push()
:
jQuery(function($){ $("#testBtn").click(function() { var table = document.getElementById("myTable"); var arrTable = []; for (var i = 0; i < table.rows.length; i++) { var row = table.rows[i]; var arrRow = []; for(var j = 0; j < row.cells.length; j++) { arrRow.push(row.cells[j].textContent); } arrTable.push(arrRow); } console.log(arrTable); }); });
<button id="testBtn">test</button> <table id="myTable"> <tr><td>a1</td><td>a2</td><td>a3</td></tr> <tr><td>b1</td><td>b2</td><td>b3</td></tr> <tr><td>c1</td><td>c2</td><td>c3</td></tr> <tr><td>d1</td><td>d2</td><td>d3</td></tr> </table> <script src="//code.jquery.com/jquery-3.3.1.js"></script>
jsFiddle: http://jsfiddle.net/Twisty/vdsz2gpL/ jsFiddle: http : //jsfiddle.net/Twisty/vdsz2gpL/
If your HTML is like so: 如果您的HTML是这样的:
<a href="#" id="testButton2">Run</a>
<br />
<br />
<table id="myTable">
<tr>
<td>Cell 1</td>
</tr>
<tr>
<td>Cell 2</td>
</tr>
<tr>
<td>Cell 3</td>
</tr>
</table>
You can make use of .each()
in JQuery: 您可以在JQuery中使用
.each()
:
$(document).ready(function () {
$("#testButton2").click(function () {
var tableArray = [];
var tableInfo = $("#myTable");
$("#myTable tr").each(function (i, row) {
$(this).find("td").each(function(i, cell){
tableArray.push($(cell).text());
});
});
alert(tableArray.toString());
});
});
If you're using JQuery, use it all the way through. 如果您使用的是JQuery,请一直使用它。
I see that an answer has been accepted already but as the question is tagged "jQuery", it may be of interest to see how compact a jQuery solution would be : 我看到答案已经被接受,但是由于该问题被标记为“ jQuery”,因此可能有兴趣查看jQuery解决方案的紧凑程度:
$("#testButton2").click(function() {
var tableArray = $("#myTable tr").map(function(tr) {
return $("td", tr).map(function(td) {
return $(td).text();
}).get();
}).get();
console.log(tableArray);
});
It looks like you're using jQuery, try changing the following line 看来您使用的是jQuery,请尝试更改以下行
rowArray.push(tableInfo.rows[i].cells[j].innerHtml
to 至
rowArray.push(tableInfo.rows[i].cells[j].html();
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