I removed my JS code in separate file and now I want to call it and execute it in the one that it was before. My new file name is blockedComponents.js. I added it in BundleConfig and I am trying to call it methods like this:
function getBlockedComponentsMethods()
{
BlockedComponents.pageChangedHandler();
}
My function in the new file is called
function BlockedComponents();
Should I require it somehow , because now I have error that pageChangedHandler is not defined?
Sorry, I didn't get what are you trying to do here, but in general :
If you would like to call a static method like this :
BlockedComponents.pageChangedHandler();
You should do something like the following :
function BlockedComponents() {
//Code here ...
}
BlockedComponents.pageChangedHandler = function() {
//Code here ...
};
Related
I am trying to use a JS function which is in an another JS file and I have this error :
ReferenceError: Lanceur is not defined
Lanceur is my object which is defined in my second file.
I have a constructor :
public class Lanceur {
constructor(angleAiguille) {
this.angleAiguille = angleAiguille;
} // And functions .....
I have this line in my first file : lanceur = new Lanceur(0);
And I call my files in a HTML files with <script src="js/canvas.js" type="text/javascript"></script>, for example.
You need to create the class before you can create an instance of it. You also don't need the keyword public as browsers don't support it currently (Unless you're compiling this through Babel or something similar, but that wasn't obvious from your post).
In your first file include the code that makes up the class, I've added a method as an example.
class Lanceur {
constructor(angleAiguille) {
this.angleAiguille = angleAiguille;
}
someMethod() {
console.log('Firing')
}
}
You can then create an instance of it like so in your second file and call its methods.
const instance = new Lanceur;
// Calling a method...
instance.someMethod();
You can learn more about JavaScript class constructors here.
I'm trying to write a JS function that gets always the same file as parameter, like this:
function something(../content/id.csv){
//do something with this file
}
Is there a way to do it, without <file> input HTML tags?
Thanks for your help!
(Suggestion) Remove that param and use a local variable within that function.
But, if you want to call the function as follow something() and always will be that way, you can do this:
function something(path = '../content/id.csv'){
console.log(path);
}
something();
Resource
Default parameters
I have a function like this:
function oneFunction()
{
var onevaribale = $('#onevalue').val();
var twovariable = $('#twovalue').val();
//Do something with both variables
//continue using **onevariable** not noticing the typo as **onevaribale**
}
Now because of the typo, the entire function fails and the location of where the code is run is on an intranet. Luckily, the code has an external js file and I want to assign something like:
var onevariable = onevaribale
How do I go about extending oneFunction to make this change from the external js file?
I am using MVC3 with heavy usage of ajax to get Partial Views. If Partial view contains JavaScript then it is added as a new js file as shown in snapshot:
so If I have a js function:
function checkValue(){
//do work
}
on ajax call a new dynamic JS file will be added contained this function and it conflicts with old once.
myfile.js contained:
function checkValue(){
//do work
}
and 1.js (dynamic file) will contain it too
function checkValue(){
//do work
}
So when I call it due to presence in old file it call already present function which is outdated. How to solve this situation like new JavaScript replace old one.
Thanks
You can check whether something is defined and redefine it only if it is not:
var checkValue = checkValue || function () {
//do work
};
If you want your definitions to override each-other instead of defining the function with a name, define them on the global object each time:
window.checkValue = function () {
//do work
};
In trying to namespace my js/jquery code, I have come up against the following problem.
Basically, I used to write all my JS code in each html/php file, and I want to abstract that away to a single js file with namespaces.
So, in my html file I have:
<script type="text/javascript">
$(document).ready(productActions.init());
</script>
And in my js file I have:
var productActions = {
init: function() {
alert('initialsed');
$('#field_id').change(function() {
alert('ok!');
});
}
The productActions init function is definitely running, because I get the first alert (initialised). However, it seems that none of the jquery binding functions do anything at all. Stepping through the init function shows that the above change function is being registered, but actually changing the value in the field does absolutely nothing.
Am I missing something obvious here?
$(document).ready(productActions.init());
This code calls init() immediately and passes its return value to ready(...). (just like any other function call)
Instead, you can write
$(document).ready(productActions.init);
To pass the function itself. Howeverm this will call it with the wrong this; if you need this, write
$(document).ready(function() { productActions.init() });