javascript - Remove Quotes from json_encoded string value

I am working on a project to implement jTable into a PHP framwework class. It is going quite well. Now I am stuck at a problem where I would like to be able to make custom input fieds on the edit dialog.

We are already using the select2 plugin, now I want to implement this on the edit dialogs of jTable. As far as I understood it is possible to add custom fields to the edit dialog like this:

Name: {
  title: 'Name',
  width: '20%',
  input: function (data) {
    if (data.record) {
      return '<input type="text" name="Name" value="' + data.record.Name + '" />';
    } else {
      return '<input type="text" name="Name" value="enter your name here" />';
    }
  }
}
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Notice the code above is in JavaScript. Basically what I do is that I build this javascript in php array and viajson_encode I send it to the client.

My problem here is that when I do

$column_array['name']['input'] = function (data) {if ....and so on}
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I get on the javascript side

input: "function (data) {... so on"
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Please notice the double quotes, it is a string and not a function anymore.

What I would need is to remove this 2 double quotes after the input. (well that's my idea so far)

OR if any one got some experience with jTable] and knows a better way to implement custom fields like select2, chosen, jQuery multiselect, elfinder and stuff like that.

I can give tomorrow some code if needed, cause I am not at work anymore today.