How to add a content into the correct textarea by clicking on an “Add” button
Question
When you open the application can you please click on the "Add Question" twice so it adds 2 table rows.
Now you will see in the application that above the horizontal line there is a textarea and a plus button, and below the horizontal line shows 2 table rows, both rows displaying its own textarea and plus button.
Now my question is that I want these 2 outcomes to happen but I do need help from somebody who is good at using Jquery/Javascript in order to solve this situation:
Situation 1. If the user clicks on the plus button ABOVE the horizontal line, then it displays a modal window which contains a search bar, Please type in search bar "AAA". You will now see a list of results. Now what I want is that if the user selects a row by clicking on the "Add" button, then I want the "QuestionContnet" within that row to be displayed in the textarea above the horizontal line. At the moment the Add button just closes the modal window but doesn't add anything into the textarea.
Situation 2: This deals with the user clicking on a plus button within one of the table rows BELOW the horizontal line. I want the same thing to happen except the "QuestionContent" added is displayed in the textarea within the same row the user has clicked the plus button, no where else.
How can both situations be solved so that it adds the QuestionContent into the correct textareas depending on which plus button is clicked? I am using an Iframe to display the content within the modal window.
UPDATE:
If you look at the application, it is now displaying "[Object] [object]" in textaea when I click "Add" button. Not the "Question".
Below is the code for the application:
<head>
<script type="text/javascript">
var plusbutton_clicked;
function insertQuestion(form) {
var $tbody = $('#qandatbl > tbody');
var $tr = $("<tr class='optionAndAnswer' align='center'></tr>");
var $plusrow = $("<td class='plusrow'></td>");
var $question = $("<td class='question'></td>");
$('.questionTextArea').each( function() {
var $this = $(this);
var $questionText = $("<textarea class='textAreaQuestion'></textarea>").attr('name',$this.attr('name')+"[]")
.attr('value',$this.val());
$question.append($questionText);
});
$('.plusimage').each( function() {
var $this = $(this);
var $plusimagerow = $("<a onclick='return plusbutton();'><img src='Images/plussign.jpg' width='30' height='30' alt='Look Up Previous Question' class='imageplus'/></a>").attr('name',$this.attr('name')+"[]")
.attr('value',$this.val());
$plusrow.append($plusimagerow);
});
$tr.append($plusrow);
$tr.append($question);
$tbody.append($tr);
form.questionText.value = "";
$('.questionTextArea').val('');
}
function plusbutton() {
// Display an external page using an iframe
var src = "previousquestions.php";
$.modal('<iframe src="' + src + '" style="border:0;width:100%;height:100%;">');
return false;
}
function closewindow() {
$.modal.close();
return false;
}
$('.plusimage').live('click', function() {
plusbutton($(this));
});
function plusbutton(plus_id) {
// Set global info
plusbutton_clicked = plus_id;
// Display an external page using an iframe
var src = "previousquestions.php";
$.modal('<iframe src="' + src + '" style="border:0;width:100%;height:100%;">');
return false;
}
function addwindow(questionText) {
if(window.console) console.log();
var txt = $(this).val(questionText);
if($(plusbutton_clicked).attr('id')=='mainPlusbutton') {
$('#mainTextarea').val(txt);
} else {
$(plusbutton_clicked).parent('td').next('td.question').find('textarea.textAreaQuestion').val(txt);
}
$.modal.close();
return false;
}
</script>
</head>
<body>
<form id="QandA" action="<?php echo htmlentities($action); ?>" method="post">
<div id="detailsBlock">
<table id="question">
<tr>
<td rowspan="3">Question:</td>
<td rowspan="3">
<textarea class="questionTextArea" id="mainTextarea" rows="5" cols="40" name="questionText"></textarea>
</td>
</tr>
</table>
<table id="plus" align="center">
<tr>
<th>
<a onclick="return plusbutton();">
<img src="Images/plussign.jpg" width="30" height="30" alt="Look Up Previous Question" class="plusimage" id="mainPlusbutton" name="plusbuttonrow"/>
</a>
<span id="plussignmsg">(Click Plus Sign to look <br/> up Previous Questions)</span>
</th>
</tr>
</table>
<table id="questionBtn" align="center">
<tr>
<th>
<input id="addQuestionBtn" name="addQuestion" type="button" value="Add Question" onClick="insertQuestion(this.form)" />
</th>
</tr>
</table>
</div>
<hr/>
<div id="details">
<table id="qandatbl" align="center">
<thead>
<tr>
<th class="plusrow"></th>
<th class="question">Question</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</form>
</body>
The details stored in the modal window comes from a seperate script known as "previousquestions.php", Below is the code where it shows the result of the "QuestionContent" field only displayed and it's "Add" button after the user has compiled a search:
<?php
$output = "";
while ($questionrow = mysql_fetch_assoc($questionresult)) {
$output .= "
<table>
<tr>
<td class='addtd'><button type='button' class='add' onclick='parent.addwindow();'>Add</button></td>
</tr>";
}
$output .= " </table>";
echo $output;
?>
Thank you
Application here
3 answers
solution1
3 2012-05-26 03:54:19
The first issue is this ->
<button id="add">
You cannot reuse an ID over and over, or, the page will iterate to the last element with that ID and NEVER run anything on any previous elements.
Quick fix:
<button class="add">
Simple enough.
We need to get the question text, from the first column, there are so many methods to do this with jQuery selectors it's mind blowing.
Situation 1
Let's take a peek at one option ->
$(document).on('click', '.add', function(){
//now that we've declared the click function, let's jump up to our parent element, and grab the text in the first cell.
var theQuestion = $("td:first-child", $(this).parent()).text();
//Now that we've figured out how to traverse the DOM to get the data we want, we need to move that data elsewhere.
$('.questionTextArea').val(firstCell);
});
Simple enough, right? That should solve the first problem you had. Note: Textareas use value to set the data, whereas other elements will use .text()
Situation 2
Alright, now we need to figure out how to add a unique identifier to the "+" row when we click, and check for that "unique identifier" when appending the data, let's do it.
You have a <td> with a class of plusrow, sounds good, let's make a click function out of it, and give it a cool new class to reference.
$(document).on('click', '.plusrow', function(){
//adding a unique class for the purpose of the click.
$(this).addClass('activePlusRow');
});
So now the "+" we clicked has a new class -- activePlusRow , let's go back to our initial click handler for the add button, and give it some new conditional statements.
$(document).on('click', '.add', function(){
//lets get our Question Text...
var theQuestion = $("td:first-child", $(this).parent()).text();
//the row is present, let's then make sure that the proper cell gets your data.
if($('.activePlusRow').length > 0){
$('.activePlusRow').next('.textAreaQuestion').val(theQuestion);
$('.activePlusRow').removeClass('activePlusRow');
}
});
Alright, as you can see of the above, we test to see if the activePlusRow class exists, if it does, then we iterate to the next textarea with a class of textAreaQuestion and change the value of it, to theQuestion from the .add button we clicked.
Let me know if you've any questions.
solution2
2 ACCPTED 2012-05-31 21:29:27
I think best way to target chosen question to specified textarea is to parameterise your plusbutton function:
function plusbutton(plus_id) {
// Set global info
plusbutton_clicked = plus_id;
// Display an external page using an iframe
var src = "previousquestions.php";
$.modal('<iframe src="' + src + '" style="border:0;width:100%;height:100%;">');
return false;
}
Of course you have to declare global var plusbutton_clicked; before insertQuestion function so other functions could change/use this information. You have to call this function with unique parameter for each plusbutton (you generate it dynamically, so this is up to you how you want to do it)
Then you can simply use it in your $(document).on('click', '.add', function(){}); - when user clicks 'add' button you have your plusbutton id so you can navigate with jQuery to corresponding textarea and place text there.
solution3
0 2012-05-31 16:12:20
I'm thinking next() isn't the right function, since it only searches for the immediately following sibling... Try this:
$(document).on('click', '.add', function(){
console.log("clicked");
//lets get our Question Text...
var theQuestion = $("td:first-child", $(this).parent()).text();
//the row is present, let's then make sure that the proper cell gets oru data.
if($('.activePlusRow').length > 0){
$('.activePlusRow').next('.question').find('textarea.textAreaQuestion').val(theQuestion);
$('.activePlusRow').removeClass('activePlusRow');
}
$.modal.close();
return true;
});
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