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steven swensen
7,926 PointsI am a lost little bird:(
I can not get my JavaScript to display the tip. HTML
<div class="all" id="pro8"><!-- Tip, Tax, and Total -->
<h1>Tip, Tax, and Total</h1>
<form id="tipTaxTotal">
<label for="price">Price:</label>
<input type="text" name="price" id="price">
<label for="tip">Tip:</label>
<input type="text" name="tip" id="tip">
<label for="tax">Tax:</label>
<input type="text" name="tax" id="tax" readonly>
<label for="total">Total:</label>
<input type="text" name="total" id="total" readonly>
</form>
<button type="button" class='tipTaxTotal' id="calculate8">Calculate</button>
<button type="button" class='tipTaxTotal' id="clear8">Clear</button>
</div>
JavaScript
let price = document.querySelector('input [name="price"]');
price = parseInt('price');
let tipD = document.querySelector('input [name="tip"]');
let taxD = document.querySelector('input[name="tax"]');
let totalD = document.querySelector('input[name="total"]');
document.addEventListener("click", x => {
if ((x.target.tagName = "BUTTON")) switch (x.target.id) {
case 'calculate8' : let tip = price * .15; let tax = price * .07; let total = price + tip + tax;
tipD.textContent = tip.toString('m'); break;
}
});
3 Answers
Steven Parker
243,656 PointsYou do have a few issues here:
- use no space between the tag name and the bracket in a property selector
- never put a variable name in quotes
- you can't read the value from the box before the button event
- you probably don't want to use the same variable for an element and a value
- to get the value from an input you take the ".value" property
- to put a value into an input you also use the ".value" property (not "textContent")
- didn't you point out to me (in a previous question) that the "if" doesn't need double parentheses?
- "m" is not a valid radix for "toString"
- you don't need "toString" anyway, automatic type conversion will handle it
look, I think I found it 
steven swensen
7,926 Pointsha ha Thanks a ton man. I don't know why I am having such a hard time with JavaScript.
steven swensen
7,926 PointsHey man I am not understanding bullet 3. and I am not seeing where I am in violation of bullet 4. sorry to keep taking your time. I really appreciate all of your help.
Steven Parker
243,656 PointsThey are both the 2nd line...
price = parseInt('price');
It doesn't work because you've quoted the name (and forgot the ".value" property), but you're trying to sample (and convert) the value of the "price" box here during startup. At that time, the box is surely empty. But when the button is pushed, the user will have put something in it.
And you named the input "price" but you're using it here for a value. You might want to name the input "priceD" like the other boxes.
steven swensen
7,926 PointsSteve you are the man thanks again for all f your help it is working like a dream now. sorry I thought I hit sent on this last night.