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I want to make a function that has to generate a random number between 2 numbers and you can save it in a variable. I'm using this code:
function rand(ran1, ran2, randVar) {
var randomNumb = Math.floor(Math.random()*(ran2 - ran1)) + ran1;
eval("var " +randVar+ " = "+randomNumb+";");
}
rand(12, 49, rand1)
alert("Your number is: "+rand1)
The error I get is: Can't find variable: rand1
Can anyone help me?
Using eval for this is entirely unnecessary. I'd recommend something like this instead:
function rand(ran1, ran2) {
var randomNumb = Math.floor(Math.random()*(ran2 - ran1)) + ran1;
return randomNumb;
}
var rand1 = rand(12, 49);
alert("Your number is: " + rand1);
Notice that in calling the function, the only real difference is in where you place the identifier, rand1.
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function tipCalculator(nonTipTotal)
{
var totalWithTip = nonTipTotal * 15;
console.log(`You should pay {totalWithTip} including tip`)
}
function tipCalculator();
It's supposed to print out the statement of the total with the tip included
Maybe this?
function tipCalculator(nonTipTotal) {
const totalWithTip = nonTipTotal * 1.15;
console.log(`You should pay ${totalWithTip} including tip`)
}
const billTotal = 25 // get your bill input somehow - depends how this runs
tipCalculator(billTotal);
You are missing the $ symbol before the opening curly bracket. It should be ${totalWithTip} instead of {totalWithTip}
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals
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I am trying to pass a parameter in query string i.e._type=1 but it doesn't pass. It doesn't appear in URL, other values does but not this one. Why ?
SitePaymentReportByBranch = function () {
$('#btnprintSitePaymentByBranch').on('click', function (e) {
e.preventDefault();
if ($("#form1").validationEngine('validate')) {
var _employerID = "";
if ($('#cmbEmployerSitPaymentByParameter :selected').text() == "-Select-") {
alert('Plz Select Employer');
}
var url = '/Reports/frmSitePayment.aspx?_EmployerID=' + $('#cmbEmployerSitPaymentByParameter :selected').val() + '&_Formdate=' + $("#formdate").val() + '&_Todate=' + $("#todate").val() +'_type=1';
commonStartup.openReportWindow(url);
}
});
},
You missed & before _type fix will be '&_type=1'
var url = '/Reports/frmSitePayment.aspx?_EmployerID=' + $('#cmbEmployerSitPaymentByParameter :selected').val() + '&_Formdate=' + $("#formdate").val() + '&_Todate=' + $("#todate").val() +'&_type=1';
Query parameters must be separated with &. You have omitted this for your _type parameter:
'_type=1'
should be;
'&_type=1'
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This is happening on an angular application I'm building. If a user enters 80 into an HTML input, it always seems to get this comparison wrong.
var x = '80';
var y = 150.9800;
/* Returns incorrect answer */
if (parceFloat(x) < y) {
return true;
} else {
return false;
}
You need to use ParseFloat() not parceFloat() ...
parceFloat is not an existing function.
parceFloat() is not a function, the function is parseFloat()
A simple typo is all the error there is.
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Here is a bit of non-working JavaScript code:
function clientEventsManager(io) {
this.connectedClients = 0;
this.createEventReceivers = function(io) {
io.sockets.on('connection', function(socket) {
this.connectedClients++;
//does not increase "connectedClients" of "clientEventsManager" function
}
}
createEventReceivers(io); //it is the only call to createEventReceivers()
}
var Manager = new clientEventsManager(io); //it is the only instanciation of clientEventsManager
My question is: Is there a way to change clientEventsManager.connectedClients in clientEventsManager.createEventReceivers()?
EDIT: this post is a duplicate of this one, thank's for answering
Quick and dirty solution
function base(param) {
this.attr1 = "azertyuiop";
this.attr2 = 123;
this.attr3 = param;
var self=this;
this.fct1 = function() {
console.log("azerty keyboard first row: "+self.attr1);
//Doesn't work
}
}
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I have a div with an id textarea_feedback and a textarea with an id msg.
This is my jQuery code:
$(document).ready(function(){
var text_max = 160;
$('#textarea_feedback').html(text_max + ' characters remaining');
$('#msg').keyup(function(){
var text_length = $('#msg').val().length;
var text_remaining = text_max - text_length;
$('#textarea_feeeback').html(text_remaining + ' characters remaining');
});
});
$('#textarea_feeeback') is a typo.
This is actually a very concrete example of the power of Vanilla JS over jQuery, and of jQuery being too clever for its own good. The Vanilla JS code:
document.getElementById('textarea_feeeback').innerHTML = text_remaining+" characters remaining";
... would have thrown an error saying that it can't set innerHTML of null, which is absolutely correct because textarea_feeeback does not exist. jQuery, however, simply has an object with no elements, and setting the html() of those zero elements is really easy: do nothing.
Unfortunately, "do nothing" is the reason why you can't debug it!
$('#textarea_feeeback').html(text_remaining + ' characters remaining');
^--- typo