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How can I check if an element exists in the visible DOM?
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I simply do:
if(document.getElementById("myElementId")){
alert("Element exists");
} else {
alert("Element does not exist");
}
It works for me and had no issues with it yet...
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ASP.NET MVC 3 Razor: Include JavaScript file in the head tag
I'm trying to figure out the proper Razor syntax to get a JavaScript file for a particular *.cshtml to be in the head tag along with all the other include files that are defined in _Layout.cshtml.
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“PKIX path building failed” and “unable to find valid certification path to requested target”
... ... Starting SSL handshake... javax.net.ssl.SSLException: Received fatal alert: protocol_version .. Could not obtain server certificate chain
– Sandeepan Nath
Jun 11 at 17:38
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jQuery Validate Plugin - Trigger validation of single field
...or').element('#element').valid();
Had to dig through the jquery.validate script to find it...
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OpenSSL: PEM routines:PEM_read_bio:no start line:pem_lib.c:703:Expecting: TRUSTED CERTIFICATE [close
...or SSL_accept: 14094418: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket when I try ro make connection
– lsv
Dec 30 '13 at 11:54
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Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
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Worked like a charm, used within an init.sql script inside Docker container. Thanks!
– Micheal J. Roberts
May 3 '19 at 8:01
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Getting the location from an IP address [duplicate]
...cation. Is there a good and reliable way to do this in PHP? I am using JavaScript for client-side scripting, PHP for server-side scripting, and MySQL for the database.
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How can I access and process nested objects, arrays or JSON?
...first level, for example
var obj = { hello: "world" };
var key = "hello";
alert(obj[key]);//world
But this is often not the case with complex json. As json becomes more complex, the approaches for finding values inside of the json also become complex. A recursive approach for
Make a link use POST instead of GET
...at submits the form.
See here, for an example. This example uses pure JavaScript, with no jQuery — you could choose this if you don't want to install anything more than you already have.
<form name="myform" action="handle-data.php" method="post">
<label for="query">Search:</labe...
Check if image exists on server using JavaScript?
...nerror = bad;
img.src = imageSrc;
}
checkImage("foo.gif", function(){ alert("good"); }, function(){ alert("bad"); } );
JSFiddle
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