Pergunta
I'm wondering if there is an easy way to make a form button with text input start a form that will check if the answer's correct and then proceed to tell you. Here's what I have, can you tell me what I need?
https://stackoverflow.com/questions/22213632
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Russian<!doctype html>
<body>
<center>
<form name="Input" action="Answer" method="get">
<input type="text" name="Input">
<input type="submit" value="submit">
</form>
<script type="text/javascript">
var A = Math.floor(Math.random()*11);
var B = Math.floor(Math.random()*11);
var C = A+B;
var Input = document.getElementById('Input');
document.write(A + "+" + B)
function Answer()
{
alert("correct!!");
}
</script>
</body>
</html>
Solução
function calculateAnswer()
{
var A = Math.floor(Math.random()*11);
var B = Math.floor(Math.random()*11);
var C = A+B;
var Input = document.getElementById('Input');
if(Input.value == C)
{
document.body.innerHTML += (A + "+" + B);
// Or another thing to do if the answer's correct
}
}
Also, attach an event listener to the submit button to make it run the function:
referenceToTheSubmitButton.addEventListener("click", calculateAnswer);
Indent as needed. Enjoy! :D
Outras dicas
I know you aren't using jQuery, but are you looking for something of this nature?
It can easily be changed to plain javascript. I just wanted to use bootstrap for the easy visual effect of the alerts.
The html would be something along these lines (with jQuery and bootstrap):
<div class="alert alert-danger" id="correct">Your answer is currently
<span id="type"> INCORRECT </span>
</div>
<form>
<input name="answer" id="answer">
</form>
<p>Hint: the answer is "correct"</p>
and the script would work like this:
$("#answer").keyup(function(){
if($(this).val() === "correct"){
$("#correct").removeClass("alert-danger")
.addClass("alert-success");
$("#type").text("CORRECT!")
}
else{
$("#correct").removeClass("alert-success")
.addClass("alert-danger");
$("#type").text("INCORRECT!")
}
}).keyup();
This is just a basic implementation of an input that checks for an answer. In this case, typing "correct" makes the alert green.
