How to retain value of text input while navigating to back page in PHP?
Question
I want to retain entered value in text box after navigation. I am explaining my code here.
**main.php**
<html>
<head></head>
<body>
<input type="text" id="myname" value="">
<a href="next.php" id="second.php">Next</a>
</body>
</html>
**next.php**
<a href="main.php">Back</a>
I don't want to use 'button' field here. On link navigation I want to retain the entered value in text box field. I am using php, html
4 answers
solution1
0 2017-09-22 07:07:44
您应该将其保存在Cookie /会话中。
solution2
0 2017-09-22 07:10:02
Or you can use localStorage too. Here's a link to read more
solution3
0 2017-09-22 10:36:24
<form id="myform" name="myform" method="POST" action="next.php">
<input type="text" name="query" id="query">
<a href="javascript: submitform();">Submit</a>
</form>
<script type="text/javascript">
function submitform(){
// alert('form submit');
document.forms["myform"].submit();
} </script>
And in next.php $_SESSION['last_search_term'] = $_REQUEST['query']; echo $_SESSION['last_search_term']; $_SESSION['last_search_term'] = $_REQUEST['query']; echo $_SESSION['last_search_term'];
This will work . I have check it
solution4
0 2017-09-22 10:45:55
I would use cookies. Note sessions and Opera back button do not work well together .
However if you want a cookieless solution you can use "window.name" string which is persistent ie its value is retained on navigation between pages. No need for a button as you required.
Just add this code before the closing </body> tag.
<script>
// on navigation to, or back: load users input from previous page (if any)
document.getElementById("myname").value = window.name;
// save value on navigation out
window.onbeforeunload = function() {
window.name = document.getElementById("myname").value;
return;
}
</script>
Assuming you give your text field the same id you can use the same js without modification on both/all pages.
The basic example code above should work with all modern browsers and most old browsers (even Opera since 2013). Modify it to use an event listener sanitize/check for empty values etc as required
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