This question already has answers here:
How do I work around JavaScript's parseInt octal behavior?
(10 answers)
Closed 4 years ago.
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/use-the-parseint-function/
I need the guide to Basic JavaScript - Use the parseInt Function (at freecodecamp)
//You need to declare the function convertToInteger taking a string parameter
//To declare a function, use the function key word and pass in your string parameter
function convertToInteger(str){
return parseInt(str);
}
Related
This question already has answers here:
How can I do string interpolation in JavaScript?
(21 answers)
Closed 2 years ago.
So basically in order to use discord hyperlink, I can't break the string to add the variable as I would too. I already tried to call it with $ and {} but it doesn't work.
.addField('Shortcuts', $'[Profilo](https://twitter.com/{tweet.user.screen_name})')
You have to use a template literal, which needs backticks and ${} around the variable:
.addField('Shortcuts', `[Profilo](https://twitter.com/${tweet.user.screen_name})`)
This question already has answers here:
How can I get query string values in JavaScript?
(73 answers)
Closed 5 years ago.
I'm gonna to write regex or other expression to get coordinates after '='.
My example:
var cords = https://maps.googleapis.com/maps/api/staticmap?center=50.082961,19.966860&zoom=13&size=300x300&sensor=false&markers=color:orange%7C50.082961,19.966860&client=gme-marktplaats&channel=bt_pl&signature=lPDQWiNQ2_mY8xgoVthZHLLYWac=
I want to get 50.082961,19.966860
I know that I could use slice but I think I could write it better with regex.
Simple base for this example: \=(.[0-9]) What's next?
Try this center\=(\d+\.\d+,\d+\.\d+)&
var val = 'https://maps.googleapis.com/maps/api/staticmap?center=50.082961,19.966860&zoom=13&size=300x300&sensor=false&markers=color:orange%7C50.082961,19.966860&client=gme-marktplaats&channel=bt_pl&signature=lPDQWiNQ2_mY8xgoVthZHLLYWac='.match(/center\=(\d+\.\d+,\d+\.\d+)&/)[1]
console.log(val)
But as other's have commented, you likely shouldn't be using regex for this purpose
This question already has answers here:
Why can't I access a property of an integer with a single dot?
(5 answers)
What are the rules for invoking functions on number literals in JS? [duplicate]
(1 answer)
Javascript weird dot operator syntax [duplicate]
(1 answer)
Closed 5 years ago.
function func2method(f){
return function(y) {
return f(this, y);
};
}
Number.prototype.add = func2method(function(x, y){return x+y});
Why do I have to use brackets to call this method on a number?
For example, 3.add(4) won't work while (3).add(4) works perfectly fine.
Because 3.0 is not the same as (3)['0']
Literals are interpreted differently. The point . represents a decimal point on a numeric literal, but the point . on an object represents a property accessor (translated to square bracket notation above)
This question already has answers here:
Calling member function of number literal
(3 answers)
Closed 6 years ago.
Why do I get an error on this, in Javascript:
10000000.toString();
You can see an example in here:
http://jsbin.com/kagijayecu/1/edit?js,console
It's because the JS parser is expecting more digits after the "." rather than a method name, e.g. 1000000.0, and in fact 1000000.0.toString() will work as expected.
wrap it inside () like this (10000000).toString()
When JS parse meets dot after digit it expects floating-point literal, e.g. 1000000.0
This question already has answers here:
How to convert a currency string to a double with Javascript?
(23 answers)
Closed 8 years ago.
I have found this link have a simple and useable funciton to convert number to currency.
www.mredkj.com/javascript/nfbasic.html
but how to turn it back form currency to number...
I already try this :
[http://jsfiddle.net/vb2cb1tm/3/]...
But its failed...
I try to read a formatted string using javascript and make a counting on this valua...
I think something as simple as
function numbers(nStr){
return Number(nStr.replace(/[\$\,]/g,''));
}
might do the trick, though it's hard to tell without seeing your original code.
function cur2num(cur) {
return parseFloat(cur.replace(/,/g,"");
}
if currency signs try /[^0-9]\.\-]/g as first argument to the replace