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ES6 class variable alternatives
... return this.constructor.MY_CONST;
}
constructor() {
alert(this.MY_CONST === this.constructor.MY_CONST);
}
}
alert(MyClass.MY_CONST);
new MyClass
// alert: string ; true
But if MY_CONST is reference type like static get MY_CONST() {return ['string'];} alert output is str...
Reconnection of Client when server reboots in WebSocket
...
When the server reboots, the Web Socket connection is closed, so the JavaScript onclose event is triggered. Here's an example that tries to reconnect every five seconds.
function start(websocketServerLocation){
ws = new WebSocket(websocketServerLocation);
ws.onmessage = function(evt) { al...
What steps should I take to protect my Google Maps API Key?
...
Considering that key has to be included in the <script> tags of your HTML pages, to load the JS files/data from google's servers, there is nothing you can do :
you must put it in your HTML files
every one can take a look at those.
Still, it doesn't really matter : i...
Get next / previous element using JavaScript?
How do I get the next element in HTML using JavaScript?
8 Answers
8
...
How to replace DOM element in place using Javascript?
...ttp://www.stackoverflow.com">StackOverflow</a>
</div>
<script type="text/JavaScript">
var myAnchor = document.getElementById("myAnchor");
var mySpan = document.createElement("span");
mySpan.innerHTML = "replaced anchor!";
myAnchor.parentNode.replaceChild(mySpan, myAnch...
Getting a better understanding of callback functions in JavaScript
...) {
// "this" may be different depending how you call the function
alert(this);
};
callback(argument_1, argument_2);
callback.call(some_object, argument_1, argument_2);
callback.apply(some_object, [argument_1, argument_2]);
The method you choose depends whether:
You have the arguments...
jquery, domain, get URL
...
You don't need jQuery for this, as simple javascript will suffice:
alert(document.domain);
See it in action:
console.log("Output;");
console.log(location.hostname);
console.log(document.domain);
alert(window.location.hostname)
console.log("document.URL : "+document.URL);
cons...
window.close and self.close do not close the window in Chrome
...e window. Now there seems to be a belief that in Chrome you can't close by script any window that is not script created. That is patently false but regardless it is supposed to still do it, even if it requires to pop up an alert to confirm. These are not happening.
...
What is the http-header “X-XSS-Protection”?
...ded. For example, if a user clicks on attack-me.com/… (which is "><script>alert('XSS')</script>, and receives as a result a page containing that script, IE will prevent that.
– Luca Invernizzi
Jul 21 '12 at 2:30
...
How can I detect if a selector returns null?
...
if ( $("#anid").length ) {
alert("element(s) found")
}
else {
alert("nothing found")
}
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