This question already has answers here:
Passing an array as a function parameter in JavaScript
(12 answers)
Closed 8 years ago.
I need to use the scissors module to join pdfs...
I have a variable number of files to merge so the code looks like:
var files = [scissors("a.pdf"), scissors("b.pdf")];
scissors.join( *** ).deflate().pdfStream().pipe(fs.createWriteStream(output));
Scissors expect one parameter for each file:
scissors.join(scissors("a.pdf"), scissors("b.pdf"), etc
so how can I do?
You can use Function.prototype.apply:
scissors.join.apply(scissors, files).deflate().pdfStream().pipe(stream);
Related
This question already has answers here:
Accessing nested JavaScript objects and arrays by string path
(44 answers)
Closed 7 months ago.
How to call a nested function with only a string? eg:
function oot(wha) {
function inn(wha)
{
First.innerHTML+="Inner ["+wha+"]";
}
oot.inn = inn;
Second.innerHTML+="Outer ["+wha+"]";
}
oot("1");
oot.inn("2"); //works okay
window["oot"]("3"); //works okay
window["oot.inn"]("4"); //<The problem, doesn't work.
window["oot"]["inn"]("4"); //Works, thanks.
Edited to make the code more readable, and show a solution.
IF there is no way to make this work with a single string i can probably make do, but i will leave the question unanswered for a few hours to see if there is another solution.
You can reference nested Objects like this:
window["oot"]["inn"]("4");
or
window.oot.inn("4")
This question already has answers here:
How do I concatenate a string with a variable?
(5 answers)
Closed 3 years ago.
This is basic ,
I can show or hide a class with :
$('.blink').show();
but I would like to do the same with a parameter so
var a = "blink";
$(a).show();
will not work obviously and I couldn't find the keywords to look for this in google.
You need to append a dot when you use that variable so that the $ will consider it as a class selector:
var a = "blink";
$('.'+a).show();
This question already has answers here:
How can I access object properties containing special characters?
(2 answers)
Closed 7 years ago.
I'm reading a JSON file through javascript. I'm having trouble getting today/_text because of the forward slash. I can get today successfully by doing: {{hours.results[0].today}}. How would I get today/_text? I've tried:
today\/_text
today/\_text
today//_text
today\\/_text
{"offset":0,"results":[{"today/_text":"Today:YES","today/_source":"/hours/1","today":"2,3,4"}]}
hours.results[0]["today/_text"] should do the trick!
hours.results[0] returns an object that has that as a key, making that the easiest way to access the property in question.
This question already has answers here:
Parse JSON in JavaScript? [duplicate]
(16 answers)
Closed 7 years ago.
I want to turn this into an array
"["65747add-afd2-45b5-92e0-150bbe40e6d9", "9c247ea5-6b81-4f47-a50c-42367dedd50b", "c1555363-aca9-4e04-8844-e0180397c72e"]"
I am getting it from the page like this:
$('#layout-uuids').text()
Is there away to just get it as an array or do I need to turn the string into an array somehow?
Thanks!
That string looks like JSON. If it is indeed JSON, all you need is JSON.parse():
var someArray = JSON.parse($('#layout-uuids').text());
This question already has answers here:
Swap value of two properties on object(s)
(3 answers)
Closed 8 years ago.
I have the following JSON. I need to swap SortId
Like I have this,
[{"CategoryId":1,"Name":"Worktable","SortId":1}
,{"CategoryId":2,"Name":"Bf ","SortId":2}]
After swaping their 'SortId' I need
[{"CategoryId":1,"Name":"Worktable","SortId":2}
,{"CategoryId":2,"Name":"Bf ","SortId":1}]
Please tell me how to do it through JavaScript.
var tmp = a[0].SortId;
a[0].SortId = a[1].SortId;
a[1].SortId = tmp;
jsFiddle