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unable to bold a particular word inside td tag of a table in angular

I am trying to show some words in bold inside a table. That is, I am putting a sentence inside td tag, and I want to bold some words of that sentence.it is working when I put a string in Html and give to that word. but when I give a variable it is not working.
<table class="action_tables" border="1">
<tr>
<td class="header_column">Name1:</td>
<td class="content_column">this is <b>bold</b></td>
</tr>
<tr>
<td class="header_column">Name2:</td>
<td class="content_column">{{element[0].matched_keyword}}</td>
</tr>
<tr>
<td class="header_column">Subject1:</td>
<td class="content_column">{{element[0].nlp_matched_sentence}}</td>
</tr>
<tr>
<td class="header_column">bold value1:</td>
<td class="content_column">{{x}}</td>
</tr>
<tr>
<td class="header_column">bold value2:</td>
<td class="content_column"><span style="font-weight:bold">Your bold text</span></td>
</tr>
</table>
.ts file
element = [
{
id: 5636,
matched_keyword: "test",
nlp_matched_sentence:
"The <strong>Air Force</strong> Test Center"
}
];
after my research I got 3 solutions but none of them are working for me. please check the demo for more information.
stackbliz demo

Take a look at demo code
You need to add [innerHTML] as below:
<td class="content_column" [innerHTML]="element[0].nlp_matched_sentence"></td>

To set html content programatically, we need to use innerHTML.
To use innerHTML as a data binding, we need to use interpolation syntax => innerHTML = {{}}
To use innerHTML as property binding, we need to use square brackets syntax => [innerHTML]=""
Change your html code like below,
<table class="action_tables" border="1">
<tr>
<td class="header_column">Name:</td>
<td class="content_column">this is <b>bold</b></td>
</tr>
<tr>
<td class="header_column">Name:</td>
<td class="content_column">{{ element[0].matched_keyword }}</td>
</tr>
<tr>
<td class="header_column">Subject:</td>
<td class="content_column">
<div innerHTML="{{ element[0].nlp_matched_sentence }}"></div>
</td>
</tr>
<tr>
<td class="header_column">bold value:</td>
<td class="content_column"><div innerHTML="{{ x }}"></div></td>
</tr>
</table>

Color table cells onclick

I have a 5x5 table, with each cell containing a word. When I click on the word, I want the color of the cell to be updated to a pre-defined color. In the example below, a table is set up with the colors encoded - what I want is them to be white until their corresponding word is clicked.
<TABLE BORDER="4" CELLSPACING="4" CELLPADDING="4">
<TR>
<TD BGCOLOR="#ffff00">Yellow</TD>
<TD BGCOLOR="#00ff00">Green</TD>
</TR>
<TR>
<TD BGCOLOR="#ff00ff">Purple</TD>
<TD BGCOLOR="00ffff">Blue</TD>
</TR>
</TABLE>

Using jQuery you could do this:
$('table td').on('click', function() {
$(this).attr("bgcolor", $(this).attr("data-color"));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<TABLE BORDER=4 CELLSPACING=4 CELLPADDING=4>
<TR>
<TD data-color="#ffff00">Yellow
<TD data-color="#00ff00">Green
</TR>
<TR>
<TD data-color="#ff00ff">Purple
<TD data-color="00ffff">Blue
</TD>
</TR>
</TABLE>
For a larger project I'd recommend selecting the table by ID.

If you want to use vanilla Javascript you can add a simple onClick event listener and set the color. The color would need to be stored in a data-bgcolor attribute.
const tableCells = document.querySelectorAll('TD')
tableCells.forEach( function (cell) {
cell.addEventListener('click', function (e) {
e.target.style.backgroundColor = e.target.dataset.bgcolor;
})
})
<TABLE BORDER=4 CELLSPACING=4 CELLPADDING=4>
<TR>
<TD data-bgcolor="#ffff00">Yellow</TD>
<TD data-bgcolor="#00ff00">Green</TD>
</TR>
<TR>
<TD data-bgcolor="#ff00ff">Purple</TD>
<TD data-bgcolor="#00ffff">Blue</TD>
</TR>
</TABLE>

How to change background color of td elements based on th using jquery

I'm stuck with a challenge to change the background color of td elements based on the th class. Below is the html code, which has th class called bots, I've to change the background color of all the td elements below the bots class.
<table border="1" class="CSSTableGenerator" id="myTable">
<tr>
<th>Component</th>
<th>Properties</th>
<th class="bots">J10</th>
<th>J11</th>
<th>J12</th>
<th>J13</th>
</tr>
<tr>
<td>GenerateAlternateTagUrlDroplet</td>
<td>alternateTagConfiguration</td>
<td class="trueValue">/com//jec/website/seo/</td>
<td class="trueValue">/com//jec/website/seo/</td>
<td class="trueValue">/com//jec/website/seo/</td>
<td class="trueValue">/com//jec/website/seo/</td>
</tr>
<tr>
<td>AlternateTagUrlDroplet</td>
<td>tagConfiguration</td>
<td class="trueValue">/jec/website/seo/</td>
<td class="trueValue">/jec/website/seo/</td>
<td class="trueValue">/jec/website/seo/</td>
<td class="trueValue">/jec/website/seo/</td>
</tr>
</table>
Can someone please help me with jquery code to achieve this?
Many Thanks in advance.

You can use map() to return array of indexes with .bots class and then change css of td with same index.
var bots = $('tr th.bots').map(function() {
return $(this).index();
}).get()
$('tr:not(:first) td').each(function() {
if (bots.indexOf($(this).index()) != -1) $(this).css('background', 'blue')
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table border="1" class="CSSTableGenerator" id="myTable">
<tr>
<th>Component</th>
<th>Properties</th>
<th class="bots">J10</th>
<th>J11</th>
<th class="bots">J12</th>
<th>J13</th>
</tr>
<tr>
<td>GenerateAlternateTagUrlDroplet</td>
<td>alternateTagConfiguration</td>
<td class="trueValue">/com//jec/website/seo/</td>
<td class="trueValue">/com//jec/website/seo/</td>
<td class="trueValue">/com//jec/website/seo/</td>
<td class="trueValue">/com//jec/website/seo/</td>
</tr>
<tr>
<td>AlternateTagUrlDroplet</td>
<td>tagConfiguration</td>
<td class="trueValue">/jec/website/seo/</td>
<td class="trueValue">/jec/website/seo/</td>
<td class="trueValue">/jec/website/seo/</td>
<td class="trueValue">/jec/website/seo/</td>
</tr>
</table>

One option would be to do something along the lines of:
Codepen
var nthChild = $('.bots').index() + 1; // Add 1 since index starts at 0
$("td:nth-child(" + nthChild + ")").css("background", 'yellow');

Maybe get all th.bots index and use that to color the tds.
Assuming you have jQuery:
$('th.bots').each(function(){
$('td:nth-child('+($(this).index() + 1)+')').css('background-color', 'blue');
});
Edit: Excluding other tables on same page
http://codepen.io/anon/pen/PzNZrE
$('th.bots').each(function(){
$(this).parents('table').children().find('td:nth-child('+($(this).index() + 1)+')').css('background-color', 'blue');
});

Copy contents of one field to another using jQuery

I have a table structure like:
<table id='myTable'>
<thead>
<tr>
<th class='name'>Name</th>
<th class='nick-name'>Nick Name</th>
<th class='age'>Age</th>
</tr>
</thead>
<tbody>
<tr>
<td class='name'>Ilona</td>
<td class='nick-name'>Baby Doll</td>
<td class='age'>21</td>
</tr>
<tr>
<td class='name'>Sieraa</td>
<td class='nick-name'></td>
<td class='age'>24</td>
</tr>
<tr>
<td class='name'>Britney</td>
<td class='nick-name'>Blondie</td>
<td class='age'>27</td>
</tr>
<tr>
<td class='name'>Kate</td>
<td class='nick-name'>Night Queen</td>
<td class='age'>19</td>
</tr>
<tr>
<td class='name'>Dani</td>
<td class='nick-name'></td>
<td class='age'>23</td>
</tr>
<tr>
<td class='name'>Aliee</td>
<td class='nick-name'></td>
<td class='age'>26</td>
</tr>
<tr>
<td class='name'>Brandi</td>
<td class='nick-name'></td>
<td class='age'>27</td>
</tr>
</tbody>
</table>
As some Nick Name fields are empty, I want to display the value of Name in Nick Name if they are empty.
Eg: In Second Row of Table Body, The Nick Name field is empty, The Name field contains Sierra. So, I want to display Sierra in Nick Name field instead of leaving it empty.
How can I achieve this using jQuery or JavaScript

jQuery:
this only works when the .name is always the exact previous element of .nick-name like in your structure
$('.nick-name').each(function () {
if ($(this).text().length === 0) {
$(this).text($(this).prev().text());
}
});
This works when both .name and .nick-name have the same parent
$('.nick-name').each(function () {
if ($(this).text().length === 0) {
var name = $(this).parent().find('.name').text();
$(this).text(name);
}
});
You should read up on DOM Traversing with jQuery, there is lots of stuff you can do to get to your elements.
jsfiddle: http://jsfiddle.net/sX4yj/

This should help
$('#myTable tr').each(function(){
var nickname = $(this).find('.nick-name').html();
alert(nickname);
});
Refer: How to get a table cell value using jQuery?

how to find clicked tr from tbody jquery

This is my html table
<table>
<thead>
<tr>
<td class="td20"><h3>Patient Name</h3></td>
<td class="td20"><h3>Summary</h3></td>
<td class="td20"> <h3>Created</h3></td>
<td class="td20"><h3>Last visit</h3></td>
<td class="td20"> <h3>Refer to a Doctor</h3></td>
</tr>
</thead>
<tbody id="patient_table">
<tr id="1">
<td class="td20">Patient Name</td>
<td class="td20">Summary</td>
<td class="td20">Created</td>
<td class="td20">Last visit</td>
<td class="td20">Refer to a Doctor</td>
</tr>
<tr id="2">
<td class="td20">Patient Name</td>
<td class="td20">Summary</td>
<td class="td20">Created</td>
<td class="td20">Last visit</td>
<td class="td20">Refer to a Doctor</td>
</tr>
</tbody>
</table>
This is my script:
$("#patient_table").click(function(e) {
var id = $(this).children('tr').attr('id');
alert(id);
});
The <tr> is generated dynamically inside the <tbody>.
I need to find the id of <tr> on click of <tr> itself.
With the script I'm always getting the first <tr> id only irrespective of the second <tr> click.

Use this instead:
$("#patient_table").on('click','td',function (e) {
var id = $(this).closest('tr').attr('id');
alert(id);
});
jsFiddle example
Since you mentioned the rows being generated dynamically you want to use .on() to delegate the event handling to the table cells.