Loop through multiple TD, grab multiple values, fill array

Question

I have two tables on the page. Inside of my second table I am dynamically adding html from JS. I am checking to see if the <tr> inside of the tbody are empty using:

var rowCount = $('#dynatable >tbody >tr').length;

If the row count is 0 I continue on with my javascript, if 1 or more <tr> exists I need to go through each <tr> and grab the two input values inside the <td>; for every <tr> available. Then need to collect the data into an array for server-side processing.

<table id="dynatable">
<thead>
    <tr>
        <th>Time</th>
        <th>Description</th>
    </tr>
</thead>
<tbody id="p_scents">
    <tr><td class="ts_td"><input type="text" name="ts_value[]" class="timestamp_input"/></td><td><TEXTAREA NAME="ts_description[]" class="ts_desc" rows="3" cols="30"  style="resize:none;" ></TEXTAREA></td></tr>
    <tr><td class="ts_td"><input type="text" name="ts_value[]" class="timestamp_input"/></td><td><TEXTAREA NAME="ts_description[]" class="ts_desc" rows="3" cols="30"  style="resize:none;" ></TEXTAREA></td></tr>
</tbody>

I have browsed similar questions but I cannot figure out a solution for my situation. I had a previous solution using simpleHTMLDOM + PHP but it's way too slow performance wise.

I was told to use JS or jquery and I am quite unfamiliar with both, any help is greatly appreciated. How do I grab the values of multiple inputs from multiple <tr>'s inside a specific table and store the values in an array?

can form encode it by simply wrapping table in <form> and using serialize() — charlietfl
– charlietfl, Commented Sep 11, 2014 at 19:43

Donal · Accepted Answer · 2014-09-11 19:38:58Z

1

If your classes will be the same, you could do something like this with jQuery.

It put the values into arrays.

var values = $("input[class='timestamp_input']").map(function(){return $(this).val();}).get();

var textAreaValues = $("textarea[class='ts_desc']").map(function(){return $(this).val();}).get();

console.log(values);

console.log(textAreaValues);

JSFiddle demo here.

answered Sep 11, 2014 at 19:38

Donal

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1 Comment

user3753569 Over a year ago

Yes the classes will be the same name so this will work. Thank you for the solution.

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