i am making a game and at the start it asks for your name. I want this name to be saved as varible. i have this html code:
<form id="form" onsubmit="return false;">
<input style=position:absolute;top:80%;left:5%;width:40%; type="text" id="userInput">
<input style=position:absolute;top:50%;left:5%;width:40%; type="submit" onclick="name()">
</form>
and this is javascript part:
function name()
{
var input = document.getElementById("userInput");
alert(input);
}
This question is related to
javascript
html
user-input
First, make your markup more portable/reusable. I also set the button's type to 'button' instead of using the onsubmit attribute. You can toggle the type attribute to submit if the form needs to interact with a server.
<div class='wrapper'>
<form id='nameForm'>
<div class='form-uname'>
<label id='nameLable' for='nameField'>Create a username:</label>
<input id='nameField' type='text' maxlength='25'></input>
</div>
<div class='form-sub'>
<button id='subButton' type='button'>Print your name!</button>
</div>
</form>
<div>
<p id='result'></p></div>
</div>
Next write a general function for retrieving the username into a variable. It checks to make sure the variable holding the username has it least three characters in it. You can change this to whatever constant you want.
function getUserName() {
var nameField = document.getElementById('nameField').value;
var result = document.getElementById('result');
if (nameField.length < 3) {
result.textContent = 'Username must contain at least 3 characters';
//alert('Username must contain at least 3 characters');
} else {
result.textContent = 'Your username is: ' + nameField;
//alert(nameField);
}
}
Next, I created an event listener for the button. It's generally considered the bad practice to have inline js calls.
var subButton = document.getElementById('subButton');
subButton.addEventListener('click', getUserName, false);
Here is a working and lightly styled demo:
Like I use on PHP and JavaScript:
<input type="hidden" id="CatId" value="<?php echo $categoryId; ?>">
Update the JavaScript:
var categoryId = document.getElementById('CatId').value;
<html>
<input type="text" placeholder ="username" id="userinput">
<br>
<input type="password" placeholder="password">
<br>
<button type="submit" onclick="myfunc()" id="demo">click me</button>
<script type="text/javascript">
function myfunc() {
var input = document.getElementById('userinput');
alert(input.value);
}
</script>
</html>
I found this to work best for me https://jsfiddle.net/Lu92akv6/ [I found this to work for me try this fiddle][1]
document.getElementById("btnmyNumber").addEventListener("click", myFunctionVar);_x000D_
function myFunctionVar() {_x000D_
var numberr = parseInt(document.getElementById("myNumber").value, 10);_x000D_
// alert(numberr);_x000D_
if ( numberr > 1) {_x000D_
_x000D_
document.getElementById("minusE5").style.display = "none";_x000D_
_x000D_
_x000D_
_x000D_
}} <form onsubmit="return false;">_x000D_
<input class="button button3" type="number" id="myNumber" value="" min="0" max="30">_x000D_
<input type="submit" id="btnmyNumber">_x000D_
_x000D_
</form>I mean a prompt script would work if the variable was not needed for the HTML aspect, even then in certain situations, a function could be used.
var save_user_input = prompt('what needs to be saved?');
//^ makes a variable of the prompt's answer
if (save_user_input == null) {
//^ if the answer is null, it is nothing
//however, if it is nothing, it is cancelled (as seen below). If it is "null" it is what the user said, then assigned to the variable(i think), but also null as in nothing in the prompt answer window, but ok pressed. So you cant do an or "null" (which would look like: if (save_user_input == null || "null") {)because (I also don't really know if this is right) the variable is "null". Very confusing
alert("cancelled");
//^ alerts the user the cancel button was pressed. No long explanation this time.
}
//^ is an end for the if (i got stumped as to why it wasn’t working and then realised this. very important to remember.)
else {
alert(save_user_input + " is what you said");
//^ alerts the user the variable and adds the string " is what you said" on the end
}Change your javascript to:
var input = document.getElementById('userInput').value;
This will get the value that has been types into the text box, not a DOM object
Source: Stackoverflow.com