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'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...

We have a project that generates a code snippet that can be used on various other projects. The purpose of the code is to read two parameters from the query string and assign them to the "src" attribute of an iframe.  For example, the page at...

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