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Passing parameters to a Bash function
...osition (not by name), that is $1, $2, and so forth. $0 is the name of the script itself.
Example:
function_name () {
echo "Parameter #1 is $1"
}
Also, you need to call your function after it is declared.
#!/usr/bin/env sh
foo 1 # this will fail because foo has not been declared yet.
foo...
When is null or undefined used in JavaScript? [duplicate]
...s scenarios:
You declare a variable with var but never set it.
var foo;
alert(foo); //undefined.
You attempt to access a property on an object you've never set.
var foo = {};
alert(foo.bar); //undefined
You attempt to access an argument that was never provided.
function myFunction (foo) {
...
HTML5 LocalStorage: Checking if a key exists [duplicate]
...' work too with if(typeof(localStorage.getItem("username"))===null){ alert('no') };
– Gabriel
Apr 15 '13 at 8:42
...
How to watch for array changes?
...d a generic observer function to that array:
_.observe(a, function() {
alert('something happened');
});
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Is jQuery “each()” function synchronous?
...is breaks the .each iterations, returning early
}
});
if(!all_ok){
alert('something went wrong');
}
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How do I pass parameters into a PHP script through a webpage?
I am calling a PHP script whenever a webpage loads. However, there is a parameter that the PHP script needs to run (which I normally pass through the command line when I am testing the script).
...
How to add facebook share button on my website?
...
You can do this by using asynchronous Javascript SDK provided by facebook
Have a look at the following code
FB Javascript SDK initialization
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({appId: 'YOUR APP ID', status...
Converting an object to a string
... as JSON.
var object = {};
object.first = "test";
object.second = "test2";
alert(object.toSource());
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Open file in a relative location in Python
...l what your actual working directory is. For example, you may not run the script from the directory the file is in. In this case, you can't just use a relative path by itself.
If you are sure the file you want is in a subdirectory beneath where the script is actually located, you can use __file__...
How to run a PowerShell script from a batch file
I am trying to run this script in PowerShell. I have saved the below script as ps.ps1 on my desktop.
8 Answers
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