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I'm stuck on this:
var Names = function (name,integer) {
this.name = name;
this.integer = integer;
};
var Discount = {
applyDiscount: function(person) {
console.log("person name is: " + person); //Eve
console.log("person integer is: " + person["integer"]); //undefined
console.log("person integer is: " + Eve["integer"]); // 23
}
};
var Eve = new Names("Eve Something", 23);
Discount.applyDiscount("Eve");
When I try to get Eve.integer value (using person parameter) - I've get undefined.
Why person["integer"] isn't working in this case?
You're passing the string "Eve" to the function and not the object that the variable Eve points to. Remove the quotes.
Needed use Object, not a string:
Discount.applyDiscount(Eve);
Related
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Consider this simple attempt to find a value in an object:
var config = {
product1: {
ids: ['master']
},
product2: {
ids: ['ps1', 'ps2']
}
};
var id = 'ps2';
var slotID = 'master';
var categorySlotIds = config[slotID].ids;
categorySlotIds.find(id);
I get: TypeError: Cannot find function find in object product1, product2
If I do typeof(categorySlotIDs) the result is object.
The manual for find says: The find() method returns the first element in the provided array
What gives?
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I'm processing a json object and want to display a number with two decimal places, but javascript says the type is 'undefined'.
I've tried using .toFixed(2), Number() and ParseFloat() to force it to be a number, and I've even tried String() to force it to change to a string, but it stubbornly remains as 'undefined'. typeof isn't even recognised as a property of the original element.
Surely there's a way to convert it / properly define it. I'd appreciate help and an explanation of why what I'm doing doesn't work.
data = {
list: {
9: {
balance: 256.3999999999942
}
},
action: 'load',
status: 'ACCTLOADED'
}
showAccounts(data);
function showAccounts(data) {
action = data.action;
status = data.status;
accs = data.list;
if ((action == 'load') && (status == 'ACCTLOADED')) { // data retrieved
$.each(accs, function(acc, details) { // display each account
let bal = 0;
bal = Number(details.balance);
console.log('bal ' + bal + bal.typeof);
});
}
} // end function showAccounts
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
I think bal is already type of number.
Use like:
console.log('bal ' + bal + typeof bal);
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I am getting error on this. i don't know what happen here.
enter code here
$(".addCategory").on('click',function(){
var value= $(".getvalue").val();
var x = $("input[name="+value+'[]'"]")
$(x).each(function(key,val){
if($(val).val().length<=0)
{
alert ("Please fill all the fileds");
}
});
});
You have problem with quotes
var x = $("input[name='" + value + "[]']")
Problem was with your quotes:
replace with following code
$(".addCategory").on('click',function(){
var value= $(".getvalue").val();
var x = $("input[name='"+value+"[]']") // add proper quotes
$(x).each(function(key,val){
if($(val).val().length<=0)
{
alert ("Please fill all the fileds");
}
});
});
See How it should wrap up
var x = $("input[name='"+value+"[]']")
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I have a function in javascript as so :
function player(){
var cards=[];
this.score=0;
var self=this;
this.addCard=addCard;
this.resetCards=resetCards;
function addCard(card){
cards.push(card);
this.score=+card.value;
}
function resetCards(){
cards=[];
score=0;
}
}
I user a constructor to call the function :
var player1=new player();
Then I call some of its enclosed functions like this
player1.addCard(someCardObject);//card someCardObject has .value say 5
player1.addCard(someCardObject);//card someCardObject has .value say 7
I expect player1.score to be 5+7=12 ,but it stays 7 .
Can anyone tell me what I am doing wrong here
You've got a simple error in addCard.
this.score=+card.value;
Should be
this.score += card.value;
In the first instance, you're setting this.score equal to card.value, while in the second one, you're adding card.value to it. Remember kids, order of operators matters!
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Closed 8 years ago.
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I want to pass a value to a Javascript Statement. Is it possible?
For Example :
function Show(msg, Id, Msgtype) { // I need to pass this Id argument to below javascript innerHtml statement
var strVar = "";
strVar = "Hello" + Msgtype + " <i class='icon-remove close'></i> " + msg + "</div>";
document.getElementById("???").innerHTML = strVar; // ??? should be the Id above in the function arguments
}
Or in other way, how can I achieve this scenario?
Just pass Id, like this
document.getElementById(Id).innerHTML = strVar;