How to reload current page without losing any form data?

Issue

Can I reload current page without losing any form data? I used..

window.location = window.location.href;

and

window.location.reload(true);

But these two things can't get earlier form datas for me. What is wrong ? When refresh browser manually, it is fine (I don't lose any form data). Please guide me how to figure it out.

Here is my full code...

<div class="form-actions">
        <form>
            <table cellpadding = "5" cellspacing ="10">
                <tr class="control-group">
                    <td style="width: 100px;">
                        <div>Name:&nbsp;<font color="red">(*)</font></div>
                    </td>
                    <td>
                        <input type="text" id="inputName" placeholder="Name" required>
                    </td>
                </tr>
                <tr class="control-group">
                    <td>
                        <div>Email:&nbsp;<font color="red">(*)</font></div>
                    </td>
                    <td>
                        <input class="span3" placeholder="user@gmail.com" id= "inputEmail" type="email" required>
                    </td>
                </tr>
                <tr class="control-group">
                    <td>
                        <div>Phone:&nbsp;</div>
                    </td>
                    <td>
                        <input type="text" id="inputPhone" placeholder="phone number">
                    </td>
                </tr>
                <tr class="control-group">
                    <td>
                        <div>Subject:&nbsp;<font color="red">(*)</font></div>
                    </td>
                    <td>
                        <input type="text" id="inputSubject" placeholder="Subject" required>
                    </td>
                </tr>
                <tr class="control-group">
                    <td colspan ="2">
                        <div>
                            <div>Detail:&nbsp;</div>
                            <div class="controls">
                                <textarea id="inputDetail"></textarea>
                            </div>
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                    <div>
                        <label style="font-weight: bold;" class="checkbox"> <input id="confirmCheck" value="" type="checkbox">
                                I Agree to the Personal information handling policy
                        </label>
                    </div>
                    <div id = "alert_placeholder"></div>
                        <div class="acceptment">
                            [Personal information handling policy]<br> <br>
                        </div>
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <div align="center">
                            <button id="btnConfirm" class="btn btn-primary">Confirm</button>
                            <input type="reset" style="width: 65px; height: 27px;" id="btnReset" class="btn">
                        </div>
                    </td>
                </tr>
            </table>
        </form>
    </div>

And at my JS file..

function bind() {
$('#btnConfirm').click(function(e) {
    if ($('#confirmCheck').is(":checked")) {
        getConfirmationForSendFAQ();
    }
    else {
        e.preventDefault();
        showalert("You should accept \"Personal Information Policy\" !", "alert-error");
    }
});};function getConfirmationForSendFAQ() {
    var name = $('#inputName').val();
    var email = $('#inputEmail').val();
    var phone = $('#inputPhone').val();
    var subject = $('#inputSubject').val();
    var detail = $('#inputDetail').val();

    $('.form-actions').empty();
    html = [];
    html.push("<table cellpadding ='8' class = 'submitInfo'");
    html.push("<tr>");
    html.push("<td class = 'title'>Name:</div>");
    html.push("<td class = 'value'>"+ name +"</td>");
    html.push("</tr>");

    html.push("<tr>");
    html.push("<td class = 'title'>Email Address:</div>");
    html.push("<td class = 'value'>"+ email +"</td>");
    html.push("</tr>");

    if (phone.trim().length > 0) {
        html.push("<tr>");
        html.push("<td class = 'title'>Phone No:</div>");
        html.push("<td class = 'value'>"+ phone +"</td>");
        html.push("</tr>");
    }

    html.push("<tr>");
    html.push("<td class = 'title'>Subject:</div>");
    html.push("<td class = 'value'>"+ subject +"</td>");
    html.push("</tr>");

    html.push("<tr>");
    html.push("<td class = 'title'>Detail Info:</div>");
    html.push("<td class = 'value'>"+ detail +"</td>");
    html.push("</tr>");

    html.push("<tr>");
    html.push("<td colspan='2'><div align = 'center'>");
    html.push("<button id='btnSend' class='btn btn-primary' style='width: 65px;'>Send</button>");
    html.push("<button id='btnReturn' class='btn btn-inverse' style='width: 65px; height: 27px; margin-left: 5px;'>Return</button>");
    html.push("</div></td></tr>");

    html.push("</table>");
    $('.form-actions').append(html.join(''));
    $('#btnReturn').click(function(e) {
        // HERE I WANT TO KNOW HOW TO DO.....
    });
    $('#btnSend').click(function(e) {
        alert("Doom");
    });}

Solution

You can use various local storage mechanisms to store this data in the browser such as the Web Storage API, IndexedDB and WebSQL (deprecated) (and UserData with IE).

The simplest and most widely supported is Web Storage where you have persistent storage (localStorage) or session based (sessionStorage) which is in memory until you close the browser. Both share the same API.

You can for example (simplified) do something like this when the page is about to reload:

window.onbeforeunload = function() {
    localStorage.setItem("name", $('#inputName').val());
    localStorage.setItem("email", $('#inputEmail').val());
    localStorage.setItem("phone", $('#inputPhone').val());
    localStorage.setItem("subject", $('#inputSubject').val());
    localStorage.setItem("detail", $('#inputDetail').val());
    // ...
}

Web Storage works synchronously so this may work here. Optionally you can store the data for each blur event on the elements where the data is entered.

At page load you can check:

window.onload = function() {

    var name = localStorage.getItem("name");
    if (name !== null) $('#inputName').val("name");

    // ...
}

getItem returns null if the data does not exist.

Replace "localStorage" with "sessionStorage" in the code above if you want to store data only temporary.

Answered By - user1693593