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I have created a php file where I need to calculate total amount by entering a value in a text field.
My form code is like this:
<input id='1' name='1' type='text' size='10' value='$visitors' />
<input type='submit' name='submit' class='submit_button' value='Buy Visitors' />
Now what I want is, user will enter some value in text field lets say 15 so it should calculate with price like this
15 x 0.60 = 9
and answer should show after text field.
Please help Me.
Please try this.
<input type="text" name="abc" id="abc" onkeyup="calc()" />
<div id="answer">
</div>
<script>
function calc()
{
var vl = document.getElementById('abc').value ;
document.getElementById('answer').innerHTML = (Number(vl)*0.60);
}
</script>
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My html like this :
<input type="number" />
I had validation number, so user only input number. I want the first digit to be non-zero
How can I do it?
You can use text input with a pattern attribute:
<form action="/action_page.php">
Phone Number: <input type="text" name="phone_number" pattern="[1-9][0-9]+" title="Phone number without a leading zero" required="required">
<input type="submit">
</form>
and to use with number you can use this:
<input type="number" oninput="this.value = this.value.replace(/^0/g, '');" >
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Photo of the website
I have a school project and I need to make a website where I can add more balance to my account. But I can't figure it out.
I would like to make an HTML number input and then that input needs to add up with my existing balance. But I can't make it work
This is the code I have:
<fieldset>
<legend>Opwaarderen</legend>
<input type="number" id="opwaarderen">
<input type="submit" onclick="opwaarderen()">
</fieldset
But how can I make the Javascript function? So that the input will add up to my already existing balance.
This will help
var currentCredit=0;
$("#a").click(()=>
{
alert(currentCredit+=Number($("#opwaarderen").val()));
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<fieldset>
<legend>Opwaarderen</legend>
<input type="number" id="opwaarderen">
<input type="submit" id="a">
</fieldset>
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I have a simple form including number input. Now, I want to dynamically add the total price, whenever someone changes the number. Could someone direct me on what to do please? I want it do be done without pressing submit.
<form>
<p class='ticket'>VIP ticket ($200):</p><input type="number" name="vip" min="0" max="20">
</form>
<p>Total price: </p>
Changing your html a little:
<p class='ticket'>VIP ticket ($200):</p><input type="number" name="vip" id="vip" min="0" max="20" />
<p>Total price: $<span id="total">0</span></p>
I've used a <span id="total"></span> to change the total value easily, and added id="vip" to your number input.
var ticketValue = 200;
$("#vip").on("change", function() {
$("#total").html($(this).val() * ticketValue);
});
Fiddle
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I want to write a function that continuously renders the data from a form. I am creating a form that has a price and sales tax and it outputs total price. Upon editing information I want my function to automatically update the total price without clicking a button. For example if something cost $10 with a 5% tax the price will be $10.50. If I change the price to $5 on the form I would want the total price to automatically update. I'm looking for some guidance to approaching this.
You can do it with onchange Event
I wrote this basic example: http://jsfiddle.net/uja7bxmm/
Html:
<form>
Price: <input type="text" id="price" onchange= "calculate()"/>
Tax: <input type="text" id="tax" onchange= "calculate()"/>
</form>
Total: <span id="total"/>
Javascript:
function calculate() {
var price =parseInt(document.getElementById("price").value,10);
var tax= parseInt(document.getElementById("tax").value,10);
if (!isNaN(price) && !isNaN(tax)) {
document.getElementById("total").innerHTML = (100+tax)*price/100;
}
}
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I want the text i type in
<input type="text" name="text1">
will automatically be updated in
<input type="text" name="text2">
by using JavaScript.
Anyone know how to solve it?
Thanks in advance
You can use the onkeyup event and populate the second <input> with the text of the first one, like this:
var inp1 = document.getElementsByName('text1')[0],
inp2 = document.getElementsByName('text2')[0];
inp1.addEventListener('keyup', function(e) {
inp2.value = this.value;
});
<p>Input 1: <input type="text" name="text1" placeholder="write something here..."></p>
<p>Input 2: <input type="text" name="text2" placeholder="ant it will show up here..."></p>
Test it using the "Run code snippet" button.