I want to count the select tag in each row. I used:
我想计算每一行中的select标签。我用了:
alert($('#table tr select').length);
sql fiddle:http://jsfiddle.net/xs8zfter/ When I execute this I got 6. But actually I need 3(ie, each row have 3 I
sql小提琴:http://jsfiddle.net/xs8zfter/当我执行这个我得到6.但实际上我需要3(即每行有3个我
2 个解决方案
#1
For that, You need to iterate over tr elements and then find number of select elements in each pf them. Like this:
为此,您需要迭代tr元素,然后在每个元素中查找选择元素的数量。像这样:
$('#table tr').each(function(){
alert($(this).find('select').length)
});
#2
Then target each row:
然后定位每一行:
$('#table tr').each(function() {
alert($(this).find('select').length);
});
This will alert the number 3 twice, because there are 2 rows that have 3 select elements each
这将两次警告数字3,因为有2行每个都有3个选择元素
Here is the DEMO
这是DEMO
#1
For that, You need to iterate over tr elements and then find number of select elements in each pf them. Like this:
为此,您需要迭代tr元素,然后在每个元素中查找选择元素的数量。像这样:
$('#table tr').each(function(){
alert($(this).find('select').length)
});
#2
Then target each row:
然后定位每一行:
$('#table tr').each(function() {
alert($(this).find('select').length);
});
This will alert the number 3 twice, because there are 2 rows that have 3 select elements each
这将两次警告数字3,因为有2行每个都有3个选择元素
Here is the DEMO
这是DEMO