需要帮助在ASP.NET Web窗体中使用jQuery遍历元素

Question

So the first image is what my page looks like. I am trying to grab the ID of the table at the top (the table that has the class trackingHistory and ID of ContentPlaceHolder1_ctl00_myRpt_ctl00_0_gdvTH_0) whenever the highlighted button is clicked.

Right now I can click the button and fire my Javascript method 'ToggleHistory()' and use jQuery to get the ID of my button. (.attr('id'))

but that's about as far as i can get. I have tried messing around with the closest() and prev() methods from jQuery but haven't had any luck. any help would be appreciated.

javascript method

function ToggleHistory(button)
{
    console.log(button);
    var x = $(button).prev();
    var y = $(button).closest('table').find('.trackingHistory');
    //var z = $(button).closest('.trackingHistory');

    console.log(x);
    console.log(y);
    console.log($(y).attr('id'));
    //console.log(z);
}

i dont want to have to hard code the id because there will be a dynamic amount of these tables and buttons.

Answer 1

The <button> and the <table> don't have a direct relationship, but do have the <div> in common.

<div>
  <table class="toggleHistory"></table>
</div>
<button type="button" onclick="ToggleHistory(this)">click here to hide</button>

The <button> and <div> are immediate siblings, which you can traverse between with .prev() and back with .next() .

$(button).prev()...

Then, the <div> and <table> are .parent() and child ( .children() ):

$(button).prev().children('.trackingHistory');

---

function ToggleHistory(button)
{
    console.log(button);

    var $historyTable = $(button).prev().children('.trackingHistory');

    console.log($historyTable.attr('id'));
}