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JavaScript - Delete Data In Multidimensional Array

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In this tutorial we will create a Delete Data In Multidimensional Array using JavaScript. This code will use onclick() to call a specific function that can delete a multidimensional array object using delete a built-in JavaScript function that use for deleting an array object by providing the index position of an array. You can apply this script to your code, it is a user-friendly program feel free to modify it.

We will use JavaScript to add some new feature to the website interface by actually written into an HTML page. It is what gives your page a different interactive elements and animation that engage a user.
.
Getting Started:

First you have to download bootstrap framework, this is the link for the bootstrap that I used for the layout design https://getbootstrap.com/.

The Main Interface

This code contains the interface of the application. To create this just write these block of code inside the text editor and save this as index.html.
  1. <!DOCTYPE html>
  2. <html

    lang

    =

    "en"

    >
  3. <head

    >
  4. <meta

    charset

    =

    "UTF-8"

    name

    =

    "viewport"

    content

    =

    "width=device-width, initial-scale=1"

    /

    >
  5. <link

    rel

    =

    "stylesheet"

    type

    =

    "text/css"

    href

    =

    "css/bootstrap.css"

    /

    >
  6. </

    head

    >
  7. <body

    >
  8. <nav class

    =

    "navbar navbar-default"

    >
  9. <div

    class

    =

    "container-fluid"

    >
  10. <a

    class

    =

    "navbar-brand"

    href

    =

    "https://sourcecodester.com"

    >

    Sourcecodester</

    a

    >
  11. </

    div

    >
  12. </

    nav>
  13. <div

    class

    =

    "col-md-3"

    ></

    div

    >
  14. <div

    class

    =

    "col-md-6 well"

    >
  15. <h3

    class

    =

    "text-primary"

    >

    JavaScript - Delete Data In Multidimensional Array</

    h3

    >
  16. <hr

    style

    =

    "border-top:1px dotted #ccc;"

    /

    >
  17. <div

    class

    =

    "col-md-4"

    >
  18. <div

    class

    =

    "form-group"

    >
  19. <label

    >

    Firstname</

    label

    >
  20. <input

    type

    =

    "text"

    id

    =

    "firstname"

    class

    =

    "form-control"

    /

    >
  21. </

    div

    >
  22. <div

    class

    =

    "form-group"

    >
  23. <label

    >

    Lastname</

    label

    >
  24. <input

    type

    =

    "text"

    id

    =

    "lastname"

    class

    =

    "form-control"

    /

    >
  25. </

    div

    >
  26. <div

    class

    =

    "form-group"

    >
  27. <label

    >

    Address</

    label

    >
  28. <input

    type

    =

    "text"

    id

    =

    "address"

    class

    =

    "form-control"

    /

    >
  29. </

    div

    >

  30. <center

    ><button

    type

    =

    "button"

    onclick

    =

    "addEntry()"

    class

    =

    "btn btn-primary form-control"

    >

    Add</

    button

    ></

    center

    >

  31. </

    div

    >
  32. <div

    class

    =

    "col-md-8"

    >
  33. <pre

    >

    [<div

    id

    =

    "result"

    ></

    div

    >

    ]</

    pre

    >
  34. <table

    id

    =

    'row'

    >

  35. </

    table

    >
  36. </

    div

    >
  37. </

    div

    >
  38. </

    body

    >
  39. <script

    src

    =

    "js/script.js"

    ></

    script

    >
  40. </

    html

    >

Creating the Script

This code contains the script of the application. This code will delete JSON object when the button is clicked. To do this just copy and write these block of codes as shown below inside the text editor and save it as script.js inside the js directory
  1. var

    data =

    [
  2. {

    firstname:

    "John"

    ,

    lastname:

    "Smith"

    ,

    address:

    "New York"

    }
  3. ]

    ;

  4. displayResult(

    data)

    ;
  5. rowDisplay(

    data)

    ;

  6. function

    displayResult(

    data)

    {
  7. var

    html =

    ""

    ;

  8. for

    (

    var

    i in

    data)

    {
  9. html +=

    "&nbsp;&nbsp;&nbsp;{firstname:"

    +

    "'"

    +

    data[

    i]

    .firstname

    +

    "'"

    +

    ", "

    +

    "lastname:'"

    +

    data[

    i]

    .lastname

    +

    "'"

    +

    ", "

    +

    "address:'"

    +

    data[

    i]

    .address

    +

    "'"

    +

    "}<br />"

    ;
  10. }

  11. document.getElementById

    (

    "result"

    )

    .innerHTML

    =

    html;
  12. firstname.value

    =

    ""

    ;
  13. lastname.value

    =

    ""

    ;
  14. address.value

    =

    ""

    ;
  15. }

  16. function

    rowDisplay(

    data)

    {

  17. var

    table =

    ""

    ;
  18. var

    j=

    0

    ;
  19. for

    (

    var

    i in

    data)

    {
  20. table +=

    "<tr>"

    ;
  21. table +=

    "<td> Row index: "

    +

    j +

    "&nbsp;&nbsp;&nbsp;</td>"
  22. +

    "<td><button class='btn btn-danger btn-sm' onclick='deleteData("

    +

    i+

    ")'>Delete</button></td>"

    ;
  23. table +=

    "</tr>"

    ;
  24. j++;
  25. }

  26. document.getElementById

    (

    "row"

    )

    .innerHTML

    =

    table;
  27. }

  28. function

    deleteData(

    index)

    {
  29. delete

    data[

    index]

    ;
  30. alert(

    "Deleted a row!"

    )

    ;
  31. rowDisplay(

    data)

    ;
  32. displayResult(

    data)

    ;
  33. }


  34. function

    addEntry(

    )

    {
  35. var

    firstname =

    document.getElementById

    (

    "firstname"

    )

    ;
  36. var

    lastname =

    document.getElementById

    (

    "lastname"

    )

    ;
  37. var

    address =

    document.getElementById

    (

    "address"

    )

    ;

  38. if

    (

    firstname.value

    ==

    ""

    ||

    lastname.value

    ==

    ""

    ||

    address.value

    ==

    ""

    )

    {
  39. alert(

    "Please complete the required field first!"

    )

    ;
  40. }

    else

    {
  41. var

    member =

    {
  42. 'firstname'

    :

    firstname.value

    ,
  43. 'lastname'

    :

    lastname.value

    ,
  44. 'address'

    :

    address.value

    ,
  45. }

    ;

  46. data.push

    (

    member)

    ;


  47. displayResult(

    data)

    ;
  48. rowDisplay(

    data)

    ;
  49. }
  50. }

There you have it we successfully created a Delete Data In Multidimensional Array using JavaScript. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!


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