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Loop through table form with Javascript and create objects from the values

Im trying to loop through a table form and create objects from each row. Each row contains 2-3 input fields and the values from those should be the properties of the object. The object should only be stored if the checkbox corresponding to the that row is checked.

EDIT: I came up with a solution. Im new to Javascript so please give input if this can be improved somehow.

Html:

 <table class="table">
  <thead>
    <tr>
      <th scope="col">#</th>
      <th scope="col">Markera</th>
      <th scope="col">Användarnamn</th>
      <th scope="col">Namn</th>
      <th scope="col">Omdöme i Canvas</th>
      <th scope="col">Examinationsdatum</th>
    </tr>
  </thead>
  <tbody>
    {{#each userArray}}
    <tr class="the_row">
      <th scope="row">1</th>
      <td><input type="checkbox" name="checkbox"/></td>
      <td><input type="text" name="username" value="
      {{this.userName}}"  readonly /></td>
      <td>{{this.firstName}}</td>
      <td>{{this.grade}}</td>
      <td><input type="text" name="date"/></td>
    </tr>
    {{/each}}
  </tbody>
</table>

JS:

let users = [];

$("#btn").on("click", function () {
event.preventDefault();

$(".table tr").each(function () {

let user = {};

$(this).find("input").each(function () {


  if($(this).attr("name") =='checkbox' && $(this).prop("checked")
  == true){
    user[$(this).attr("name")] = $(this).prop("checked");

  }
  else{
    user[$(this).attr("name")] = $(this).val();
  }

  });

  
  if(user.checkbox===true){
    users.push(user);
  }
});

console.log(users);
});

Sorry about the intending is the JS file.

about 4 years ago · Juan Pablo Isaza
2 answers
Answer question

0

If you are just submitting a form, you could use FormData to gather the field names and their values, then turn that into an object.

const form = document.querySelector('.myForm')

form.addEventListener('submit', (e) => {
  e.preventDefault()
  const object = {};
  const myFormData = new FormData(form)
  myFormData.forEach((value, key) => object[key] = value);
  console.log(object)
})
<form class="myForm">
  <table>
    <tbody>
      <tr>
        <th>1</th>
        <td><label>checkbox: <input type="checkbox" name="row1checkbox"/></label></td>
        <td><label>text: <input type="text" name="row1text" /></label></td>
      </tr>
      <tr>
        <th>2</th>
        <td><label>checkbox: <input type="checkbox" name="row2checkbox"/></label></td>
        <td><label>text: <input type="text" name="row2text" /></label></td>
      </tr>
      <tr>
        <th>3</th>
        <td><label>checkbox: <input type="checkbox" name="row3checkbox"/></label></td>
        <td><label>text: <input type="text" name="row3text" /></label></td>
      </tr>
    </tbody>
  </table>
  <button type="submit">submit</button>
</form>

about 4 years ago · Juan Pablo Isaza Report

0

A (not that minimal but) reproducable example to create an object from the current values of input/select elements in the document (note: no form used here).

See also

getMyValues();

const handle = evt => {
  if (/input|select/i.test(evt.target.nodeName)) {
    return getMyValues();
  };
}
document.addEventListener(`click`, handle);
document.addEventListener(`keyup`, handle);

function getMyValues() {
  console.clear();
  const valuesObj = [...document.querySelectorAll('input, select')]
    .reduce( (acc, inp) => {
      if (/radio|checkbox/i.test(inp.type)) {
        acc[inp.id] = inp.checked ? `on:${inp.value}` : `off:${inp.value}`;
      }
      // note: you may want to include types like range/search/url etc. 
      // See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input
      if (/text|number|textarea|date/i.test(inp.type)) {
        acc[inp.id] = inp.value || `empty`;
      }
      
      if (inp.constructor === HTMLSelectElement) {
        acc[inp.id] = inp.value;
      }

      return acc;
    }, {});
        
  document.querySelector(`pre`).textContent = `Your values:\n${
    JSON.stringify(valuesObj, null, 2)}`;
  }
body {
  font: 12px/15px normal verdana, arial;
  margin: 2rem;
}

pre {
  position: absolute;
  width: 45vw;
  left: 50vw;
  top: 1rem;
  padding: 5px;
  border: 1px solid #AAA;
}

input,
select {
  margin-bottom: 6px;
}
<pre></pre>
<p>
  <input type="number" value="4" id="someNumber"> some number<br>
  <input type="checkbox" value="cb4" id="someCheckbox"> some checkbox<br>
  <input type="text" placeholder="some text" id="someText" value="tx txt text"> some text<br>
  <input type="text" placeholder="some text" id="someText2"> some text<br>
  <select id="selectSome">
    <option value="v1">v1</option>
    <option value="v2" selected>v2</option>
    <option value="v3">v3</option>
  </select><br>
  <select id="selectSome2">
    <option value="nothing selected yet">select one</option>
    <option value="vv1">vv1</option>
    <option value="vv2">vv2</option>
    <option value="vv3">vv3</option>
  </select><br>
  <input type="radio" name="someRadio" id="radio1" value="r1">r1<br>
  <input type="radio" name="someRadio" id="radio2" value="r2">r2<br>
  <input type="radio" name="someRadio" id="radio3" value="r3">r3
</p>

about 4 years ago · Juan Pablo Isaza Report
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