Inserted value disappeares after pressing submit
Question
I want to create a form in HTML that can take the inserted Name by the user and then after pressing submit shows the corresponded value (Age) to that user. This is my code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="MyMain.css">
<script language="JavaScript">
function myFunction() {
document.getElementById('myshow').innerHTML =
document.getElementById("Name").value;
}
</script>
</head>
<body>
<div class="container">
<div>
<fieldset>
<form action="">
<div class="row">
<div form-group">
<label for="fname">Your Name: </label>
<input type="text" class="form-control" name="name" id="Name" placeholder="Jon" value="">
</div>
</div>
<div>
<input type="submit" class="button" onclick="myFunction();" value="Submit"<br/>
</div>
</div>
</form>
</fieldset>
</div>
</div>
<div class="container">
<fieldset>
<div>
<label>Age: </label>
<p><span id='myshow'></span></p>
</div>
</fieldset>
</div>
</body>
</html>
The problem is that after pressing submit the Name will be shown in the myshow span section(Age:) just for a fraction of second and then it disappeares and url changes to localhost:5000/?Name=Jack rather than localhost:5000/the current path/?Name=Jack
2 answers
solution1
0 2019-12-25 11:34:03
You should use onSubmit on the form element to call the function and then return false.
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="MyMain.css">
<script language="JavaScript">
function myFunction() {
document.getElementById('myshow').innerHTML =
document.getElementById("Name").value;
return false;
}
</script>
</head>
<body>
<div class="container">
<div>
<fieldset>
<form action="" onSubmit="return myFunction();">
<div class="row">
<div form-group">
<label for="fname">Your Name: </label>
<input type="text" class="form-control" name="name" id="Name" placeholder="Jon" value="">
</div>
</div>
<div>
<input type="submit" class="button" value="Submit"><br/>
</div>
</div>
</form>
</fieldset>
</div>
</div>
<div class="container">
<fieldset>
<div>
<label>Age: </label>
<p><span id='myshow'></span></p>
</div>
</fieldset>
</div>
</body>
</html>
Ps: you did not close the submit tag properly
solution2
0 2019-12-25 11:34:17
I think that you don't need submit.
If you don't need to submit, You have to change this code.
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="MyMain.css">
<script language="JavaScript">
function myFunction() {
document.getElementById('myshow').innerHTML =
document.getElementById("Name").value;
}
</script>
</head>
<body>
<div class="container">
<div>
<fieldset>
<div class="row">
<div form-group">
<label for="fname">Your Name: </label>
<input type="text" class="form-control" name="name" id="Name" placeholder="Jon" value="">
</div>
</div>
<div>
<input type="button" class="button" onclick="myFunction();" value="Submit"<br/>
</div>
</div>
</fieldset>
</div>
</div>
<div class="container">
<fieldset>
<div>
<label>Age: </label>
<p><span id='myshow'></span></p>
</div>
</fieldset>
</div>
</body>
</html>
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