CODEWITHSUNDEEP
javascript
g sundrar
g sundrar

Reputation: 31

javascript deleting the array of elements

i am having 10 check boxes.if i click the value of the check box has to push to the array,if i unchecked the check box then the corresponding check box value has to be deleted from the array? pls...anyone give reply for this

Upvotes: 3

Views: 131

Answers (4)

Johal
Johal

Reputation: 607

function getChecked(ename)
{
field = document.getElementsByName(ename);
var topub = new Array();
for (i = 0; i < field.length; i++)
    if(field[i].checked == true)
    {
        topub.push(field[i].id);
    }
    return topub;
}

Above is what i used in such cases. i keep name of all checkboxes same and then pass name to this function and it returns array. So you can replace ur array with returned one. Like :

var yourOldArray = new Array();<br>
yourOldArray = getChecked("name attribute of checkboxes");

All you need to make sure is all checkboxes have same value for their name attribute.

Upvotes: 0

KoolKabin
KoolKabin

Reputation: 17683

try javascript associative array like:

a['title'] = 'Mr.'; 
a["fname'] = 'Brad'; 
a['lname'] = 'Johnson'; 
delete a['title'];

Its simple... when user checks it adds with its id as key and when unchecks it deletes

Upvotes: 0

RoToRa
RoToRa

Reputation: 38431

Does this have to work exactly like this? It would be easier to generate an array of values from the checked checkboxes when needed.

Something like:

// Pass reference to a parent element of all checkboxes, for example the form
function getCheckedBoxes(parent) {
  var result = [];
  var inputs = parent.getElementsByTagName("input");
  for (var i = 0, len = inputs.length; i < len; i++) {
    var cb = inputs[i];
    if (cb.type.toLowerCase() === "checkbox" && cb.checked)
      result.push(cb.value);
  }
  return result;
}

Upvotes: 1

Kangkan
Kangkan

Reputation: 15571

Use array.splice(index,howmany,element1,.....,elementX). See more about splice here: http://www.w3schools.com/jsref/jsref_splice.asp .

Upvotes: 0

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