I have a function callWithMagic which takes a callback function as a parameter and calls it with one argument.  const callWithMagic = callback => {   const magic = getMagic();   callback(magic); };   I also have a function processMagic which tak...
How do I pass a function as a parameter without the function executing in the "parent" function or using eval()? (Since I've read that it's insecure.)  I have this:  addContact(entityId, refreshContactList());   It works, but the pr...
In a web application that makes use of AJAX calls, I need to submit a request but add a parameter to the end of the URL, for example:  Original URL:      http://server/myapp.php?id=10   Resulting URL:     http://server/myapp.php?id=10&enabled=t...
I am debugging some JavaScript, and can't explain what this || does?  function (title, msg) {   var title = title || 'Error';   var msg   = msg || 'Error on Request'; }   Can someone give me an hint, why this guy is using var ti...
Please advise how to pass parameters into a function called using setInterval.  My example setInterval(funca(10,3), 500); is incorrect....
I am new to JavaScript/jQuery and I've been learning how to make functions. A lot of functions have cropped up with (e) in brackets. Let me show you what I mean:  $(this).click(function(e) {     // does something });   It always appears that th...
I read the tutorial DIY widgets - How to embed your site on another site for XSS Widgets by Dr. Nic.    I'm looking for a way to pass parameters to the script tag. For example, to make the following work:  <script src="http://path/to/wid...
I'm creating HTML with a loop that has a column for Action. That column is a Hyperlink that when the user clicks calls a JavaScript function and passes the parameters...  example:  <a href="#" OnClick="DoAction(1,'Jose');&#...
For instance, I have a url like this : www.mysite.com/my_app.html  How do I pass a value " Use_Id = abc " to it and use javascript to display on that page ?...
I want to add the parameter &vhs=1 at the end of each YouTube video URL on my browser. I have tried using the following script but it gets stuck in a loop (keeps adding &vhs=1 &vhs=1...).  // ==UserScript== // @name        Youtube Tape Mo...

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