如果我有一个HTML表
<div id="myTabDiv">
<table name="mytab" id="mytab1">
<tr>
<td>col1 Val1</td>
<td>col2 Val2</td>
</tr>
<tr>
<td>col1 Val3</td>
<td>col2 Val4</td>
</tr>
</table>
</div>
我将如何遍历所有表行(假设行数可以改变每次检查)和检索值从每个单元格在每一行从JavaScript?
当前回答
我将其保留下来，以供将来参考，以便抓取特定的HTML表列并打印结果。
//select what table you want to scrape (is zero based)
//set 0 if there is only one
setTable=0;
//select what column you want to scrape (is zero based)
//in this case I would be scrapping column 2
setColumnToScrape=1;
var table = document.getElementsByTagName("tbody")[setTable];
for (var i = 0, row; row = table.rows[i]; i++) {
col = row.cells[setColumnToScrape];
document.write(col.innerHTML + "<br>");
}
其他回答
您可以考虑使用jQuery。使用jQuery，这是超级简单的，可能看起来像这样:
$('#mytab1 tr').each(function(){
$(this).find('td').each(function(){
//do your stuff, you can use $(this) to get current cell
})
})
这个解决方案对我来说非常有效
var table = document.getElementById("myTable").rows;
var y;
for(i = 0; i < # of rows; i++)
{ for(j = 0; j < # of columns; j++)
{
y = table[i].cells;
//do something with cells in a row
y[j].innerHTML = "";
}
}
es6:
const table = document.getElementById('some-table');
const cells = table.getElementsByTagName('td');
for (let cell of cells) {
// do something with cell here
}
早期版本:
var table = document.getElementById('some-table');
var cells = table.getElementsByTagName('td');
for ( var i in cells ) {
// do something with cells[i]
}
来源:https://developer.mozilla.org/en-US/docs/Web/API/Element/getElementsByTagName
我的解决方案，使用es6:
var table = document.getElementById('mytab1');
var data = [...table.rows].map(row => [...row.cells].map(td => td.innerText));
console.log(data)
引用: https://developer.mozilla.org/pt-BR/docs/Web/API/HTMLCollection
使用一个for循环:
var table = document.getElementById('tableID');
var count = table.rows.length;
for(var i=0; i<count; i++) {
console.log(table.rows[i]);
}
