Angular dom problem add table rows in html

JavaScript
1 
    <tr  *ngFor="let liz of sho">
              <td>{{show[0]}}</td>
              <td>{{show[1]}}</td>
              <td>{{show[2]}}</td>
              <td>61</td>
              <td>2011/04/25</td>
              <td>$320,800</td>
          </tr>

I dont know if anyone can help me buti have a table. and arrays
show contains some values like [‘dave’, ‘erk,’ ]
etx every time i press the button and calll function a new table row appears!
but when array change elements to new row every row values just duplicates
and dont print a new set of values all table rows just show duplicate of it self and update realtime
with array how to print array and then a new one>?

dbtt
dbtt1360×728 159 KB

this more a question of logics but how to do it?
dave is only show[0] showing but just try explain my problem

2 
              <td>{{show[0]}}</td>
              <td>{{show[1]}}</td>
              <td>{{show[2]}}</td>

Do you mean these to be {{liz[0]}}, etc?

3

lol i didnt ezpect an answer no if i enter in input fields name position etz
i add everything to an array so show[0] is dave show[1] is webdev etx
so far all good it adds an new table row
but if i now input new values to array show[0] is erk show[1] is architect etx
and push doublepost to add new table row
dave changes to erk and web dev changes to architext too im doing something wrong it doesnt
print a row ruins everything what am i doing wronk

4

before everything was dave it said erk

5

The reason you’re getting repetition is because you are telling it to create a row with the same data for every entry in sho (which I’m guessing was supposed to be show).

6

If you want to share a stackblitz or something with your application I can try to help, but that’s about as much advice as I can offer with only the included information.

1 Like
7

I can definitely answer this question, but I would need to see your code for the component that corresponds to this view, Could you please post that?

8 
component.ts
sho=[]
bok=[]
show=[]
ball='http://localhost:8000/documents/logos.png'
private data: Observable<Cat>
blob:any
inclick(gov,gov2,gov3,gov4){
  this.cat.insertCat(gov,gov2,gov3,gov4).subscribe(data=> Object.keys(data).map(function(keys,val,b ){
    let i
    let dast=[]
    this.show.push(data[keys]);console.log(this.show)

},this),
);this.bok=[gov,gov2,gov3,gov4],
this.sho.push('item'),
this.show=[]

}

html template
<button (click)="inclick(val.value,val2.value,val3.value,val4.value)">double post</button>

<li *ngFor="let liz of bok">
  
</li>


<img src='http://localhost:8000/documents/logos'
     alt="Place image title"
     >
     <table id="example" class="table table-striped table-bordered nowrap" style="width:100%">
      <thead>
          <tr>
              <th>Name</th>
              <th>Position</th>
              <th>Office</th>
              <th>Age</th>
              <th>Start date</th>
              <th>Salary</th>
          </tr>
      </thead>
      <tbody>
          <tr  *ngFor="let liz of sho">
              <td>{{show[0]}}</td>
              <td>{{show[1]}}</td>
              <td>{{show[2]}}</td>
              <td>61</td>
              <td>2011/04/25</td>
              <td>$320,800</td>
          </tr>
          <tr>
            <td>Tiger Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>61</td>
            <td>2011/04/25</td>
            <td>$320,800</td>
        </tr>

          <tr>
              <td>Garrett Winters</td>
              <td>Accountant</td>
              <td>Tokyo</td>
              <td>63</td>
              <td>2011/07/25</td>
              <td>$170,750</td>
          </tr>
          <tr>
              <td>Ashton Cox</td>
              <td>Junior Technical Author</td>
              <td>San Francisco</td>
              <td>66</td>
              <td>2009/01/12</td>
              <td>$86,000</td>
          </tr>
          <tr>
              <td>Cedric Kelly</td>
              <td>Senior Javascript Developer</td>
              <td>Edinburgh</td>
              <td>22</td>
              <td>2012/03/29</td>
              <td>$433,060</td>
          </tr>
          <tr>
              <td>Airi Satou</td>
              <td>Accountant</td>
              <td>Tokyo</td>
              <td>33</td>
              <td>2008/11/28</td>
              <td>$162,700</td>
          </tr>
          <tr>
              <td>Brielle Williamson</td>
              <td>Integration Specialist</td>
              <td>New York</td>
              <td>61</td>
              <td>2012/12/02</td>
              <td>$372,000</td>
          </tr>
          <tr>
              <td>Herrod Chandler</td>
              <td>Sales Assistant</td>
              <td>San Francisco</td>
              <td>59</td>
              <td>2012/08/06</td>
              <td>$137,500</td>
          </tr>
          <tr>
              <td>Rhona Davidson</td>
              <td>Integration Specialist</td>
              <td>Tokyo</td>
              <td>55</td>
              <td>2010/10/14</td>
              <td>$327,900</td>
          </tr>
          <tr>
              <td>Colleen Hurst</td>
              <td>Javascript Developer</td>
              <td>San Francisco</td>
              <td>39</td>
              <td>2009/09/15</td>
              <td>$205,500</td>
          </tr>
          <tr>
              <td>Sonya Frost</td>
              <td>Software Engineer</td>
              <td>Edinburgh</td>
              <td>23</td>
              <td>2008/12/13</td>
              <td>$103,600</td>
          </tr>
          <tr>
              <td>Jena Gaines</td>
              <td>Office Manager</td>
              <td>London</td>
              <td>30</td>
              <td>2008/12/19</td>
              <td>$90,560</td>
          </tr>
          <tr>
              <td>Quinn Flynn</td>
              <td>Support Lead</td>
              <td>Edinburgh</td>
              <td>22</td>
              <td>2013/03/03</td>
              <td>$342,000</td>
          </tr>
          <tr>
              <td>Charde Marshall</td>
              <td>Regional Director</td>
              <td>San Francisco</td>
              <td>36</td>
              <td>2008/10/16</td>
              <td>$470,600</td>
          </tr>
          <tr>
              <td>Haley Kennedy</td>
              <td>Senior Marketing Designer</td>
              <td>London</td>
              <td>43</td>
              <td>2012/12/18</td>
              <td>$313,500</td>
          </tr>
          <tr>
              <td>Tatyana Fitzpatrick</td>
              <td>Regional Director</td>
              <td>London</td>
              <td>19</td>
              <td>2010/03/17</td>
              <td>$385,750</td>
          </tr>
          <tr>
              <td>Michael Silva</td>
              <td>Marketing Designer</td>
              <td>London</td>
              <td>66</td>
              <td>2012/11/27</td>
              <td>$198,500</td>
          </tr>
          <tr>
              <td>Paul Byrd</td>
              <td>Chief Financial Officer (CFO)</td>
              <td>New York</td>
              <td>64</td>
              <td>2010/06/09</td>
              <td>$725,000</td>
          </tr>
          <tr>
              <td>Gloria Little</td>
              <td>Systems Administrator</td>
              <td>New York</td>
              <td>59</td>
              <td>2009/04/10</td>
              <td>$237,500</td>
          </tr>
          <tr>
              <td>Bradley Greer</td>
              <td>Software Engineer</td>
              <td>London</td>
              <td>41</td>
              <td>2012/10/13</td>
              <td>$132,000</td>
          </tr>
          <tr>
              <td>Dai Rios</td>
              <td>Personnel Lead</td>
              <td>Edinburgh</td>
              <td>35</td>
              <td>2012/09/26</td>
              <td>$217,500</td>
          </tr>
          <tr>
              <td>Jenette Caldwell</td>
              <td>Development Lead</td>
              <td>New York</td>
              <td>30</td>
              <td>2011/09/03</td>
              <td>$345,000</td>
          </tr>
          <tr>
              <td>Yuri Berry</td>
              <td>Chief Marketing Officer (CMO)</td>
              <td>New York</td>
              <td>40</td>
              <td>2009/06/25</td>
              <td>$675,000</td>
          </tr>
          <tr>
              <td>Caesar Vance</td>
              <td>Pre-Sales Support</td>
              <td>New York</td>
              <td>21</td>
              <td>2011/12/12</td>
              <td>$106,450</td>
          </tr>
          <tr>
              <td>Doris Wilder</td>
              <td>Sales Assistant</td>
              <td>Sidney</td>
              <td>23</td>
              <td>2010/09/20</td>
              <td>$85,600</td>
          </tr>
          <tr>
              <td>Angelica Ramos</td>
              <td>Chief Executive Officer (CEO)</td>
              <td>London</td>
              <td>47</td>
              <td>2009/10/09</td>
              <td>$1,200,000</td>
          </tr>
          <tr>
              <td>Gavin Joyce</td>
              <td>Developer</td>
              <td>Edinburgh</td>
              <td>42</td>
              <td>2010/12/22</td>
              <td>$92,575</td>
          </tr>
          <tr>
              <td>Jennifer Chang</td>
              <td>Regional Director</td>
              <td>Singapore</td>
              <td>28</td>
              <td>2010/11/14</td>
              <td>$357,650</td>
          </tr>
          <tr>
              <td>Brenden Wagner</td>
              <td>Software Engineer</td>
              <td>San Francisco</td>
              <td>28</td>
              <td>2011/06/07</td>
              <td>$206,850</td>
          </tr>
          <tr>
              <td>Fiona Green</td>
              <td>Chief Operating Officer (COO)</td>
              <td>San Francisco</td>
              <td>48</td>
              <td>2010/03/11</td>
              <td>$850,000</td>
          </tr>
          <tr>
              <td>Shou Itou</td>
              <td>Regional Marketing</td>
              <td>Tokyo</td>
              <td>20</td>
              <td>2011/08/14</td>
              <td>$163,000</td>
          </tr>
          <tr>
              <td>Michelle House</td>
              <td>Integration Specialist</td>
              <td>Sidney</td>
              <td>37</td>
              <td>2011/06/02</td>
              <td>$95,400</td>
          </tr>
          <tr>
              <td>Suki Burks</td>
              <td>Developer</td>
              <td>London</td>
              <td>53</td>
              <td>2009/10/22</td>
              <td>$114,500</td>
          </tr>
          <tr>
              <td>Prescott Bartlett</td>
              <td>Technical Author</td>
              <td>London</td>
              <td>27</td>
              <td>2011/05/07</td>
              <td>$145,000</td>
          </tr>
          <tr>
              <td>Gavin Cortez</td>
              <td>Team Leader</td>
              <td>San Francisco</td>
              <td>22</td>
              <td>2008/10/26</td>
              <td>$235,500</td>
          </tr>
          <tr>
              <td>Martena Mccray</td>
              <td>Post-Sales support</td>
              <td>Edinburgh</td>
              <td>46</td>
              <td>2011/03/09</td>
              <td>$324,050</td>
          </tr>
          <tr>
              <td>Unity Butler</td>
              <td>Marketing Designer</td>
              <td>San Francisco</td>
              <td>47</td>
              <td>2009/12/09</td>
              <td>$85,675</td>
          </tr>
          <tr>
              <td>Howard Hatfield</td>
              <td>Office Manager</td>
              <td>San Francisco</td>
              <td>51</td>
              <td>2008/12/16</td>
              <td>$164,500</td>
          </tr>
          <tr>
              <td>Hope Fuentes</td>
              <td>Secretary</td>
              <td>San Francisco</td>
              <td>41</td>
              <td>2010/02/12</td>
              <td>$109,850</td>
          </tr>
          <tr>
              <td>Vivian Harrell</td>
              <td>Financial Controller</td>
              <td>San Francisco</td>
              <td>62</td>
              <td>2009/02/14</td>
              <td>$452,500</td>
          </tr>
          <tr>
              <td>Timothy Mooney</td>
              <td>Office Manager</td>
              <td>London</td>
              <td>37</td>
              <td>2008/12/11</td>
              <td>$136,200</td>
          </tr>
          <tr>
              <td>Jackson Bradshaw</td>
              <td>Director</td>
              <td>New York</td>
              <td>65</td>
              <td>2008/09/26</td>
              <td>$645,750</td>
          </tr>
          <tr>
              <td>Olivia Liang</td>
              <td>Support Engineer</td>
              <td>Singapore</td>
              <td>64</td>
              <td>2011/02/03</td>
              <td>$234,500</td>
          </tr>
          <tr>
              <td>Bruno Nash</td>
              <td>Software Engineer</td>
              <td>London</td>
              <td>38</td>
              <td>2011/05/03</td>
              <td>$163,500</td>
          </tr>
          <tr>
              <td>Sakura Yamamoto</td>
              <td>Support Engineer</td>
              <td>Tokyo</td>
              <td>37</td>
              <td>2009/08/19</td>
              <td>$139,575</td>
          </tr>
          <tr>
              <td>Thor Walton</td>
              <td>Developer</td>
              <td>New York</td>
              <td>61</td>
              <td>2013/08/11</td>
              <td>$98,540</td>
          </tr>
          <tr>
              <td>Finn Camacho</td>
              <td>Support Engineer</td>
              <td>San Francisco</td>
              <td>47</td>
              <td>2009/07/07</td>
              <td>$87,500</td>
          </tr>
          <tr>
              <td>Serge Baldwin</td>
              <td>Data Coordinator</td>
              <td>Singapore</td>
              <td>64</td>
              <td>2012/04/09</td>
              <td>$138,575</td>
          </tr>
          <tr>
              <td>Zenaida Frank</td>
              <td>Software Engineer</td>
              <td>New York</td>
              <td>63</td>
              <td>2010/01/04</td>
              <td>$125,250</td>
          </tr>
          <tr>
              <td>Zorita Serrano</td>
              <td>Software Engineer</td>
              <td>San Francisco</td>
              <td>56</td>
              <td>2012/06/01</td>
              <td>$115,000</td>
          </tr>
          <tr>
              <td>Jennifer Acosta</td>
              <td>Junior Javascript Developer</td>
              <td>Edinburgh</td>
              <td>43</td>
              <td>2013/02/01</td>
              <td>$75,650</td>
          </tr>
          <tr>
              <td>Cara Stevens</td>
              <td>Sales Assistant</td>
              <td>New York</td>
              <td>46</td>
              <td>2011/12/06</td>
              <td>$145,600</td>
          </tr>
          <tr>
              <td>Hermione Butler</td>
              <td>Regional Director</td>
              <td>London</td>
              <td>47</td>
              <td>2011/03/21</td>
              <td>$356,250</td>
          </tr>
          <tr>
              <td>Lael Greer</td>
              <td>Systems Administrator</td>
              <td>London</td>
              <td>21</td>
              <td>2009/02/27</td>
              <td>$103,500</td>
          </tr>
          <tr>
              <td>Jonas Alexander</td>
              <td>Developer</td>
              <td>San Francisco</td>
              <td>30</td>
              <td>2010/07/14</td>
              <td>$86,500</td>
          </tr>
          <tr>
              <td>Shad Decker</td>
              <td>Regional Director</td>
              <td>Edinburgh</td>
              <td>51</td>
              <td>2008/11/13</td>
              <td>$183,000</td>
          </tr>
          <tr>
              <td>Michael Bruce</td>
              <td>Javascript Developer</td>
              <td>Singapore</td>
              <td>29</td>
              <td>2011/06/27</td>
              <td>$183,000</td>
          </tr>
          <tr>
              <td>Donna Snider</td>
              <td>Customer Support</td>
              <td>New York</td>
              <td>27</td>
              <td>2011/01/25</td>
              <td>$112,000</td>
          </tr>
      </tbody>
      <tfoot>
          <tr>
              <th>Name</th>
              <th>Position</th>
              <th>Office</th>
              <th>Age</th>
              <th>Start date</th>
              <th>Salary</th>
          </tr>
      </tfoot>
  </table>
     </html>

my code is still in development but i hope u can see the important parts.
basically what i need is someway of adding a tr element and not update it again