HTML onchange (this.value)
We found this in our code (we haven’t written it by our selfs, and we are new to programmng), can anyone explain what this.value means and how you change it? Thank you!
javascript
Google Maps JS API v3 – Simple Multiple Marker Example
This is the simplest I could reduce it to: 👨💻 Edit/fork on a Codepen → SCREENSHOT There is some closure magic happening when passing the callback argument to the addListener method. This can be quite a tricky topic if you are not familiar with how closures work. I would suggest checking out the following Mozilla … Read more
Sorting object property by values
Move them to an array, sort that array, and then use that array for your purposes. Here’s a solution: Once you have the array, you could rebuild the object from the array in the order you like, thus achieving exactly what you set out to do. That would work in all the browsers I know … Read more
HTML5 rich-text inside textarea
I heard that the new HTML5 will add rich text capability to textareas (it will make them more flexible), so you can do stuff like code syntax highlighting editors without very nasty javascript (like creating iframes and stuff). Is this true? Are there browsers with support for it yet? And where can I find some … Read more
Is there a way to get element by XPath using JavaScript in Selenium WebDriver?
You can use document.evaluate: Evaluates an XPath expression string and returns a result of the specified type if possible. It is w3-standardized and whole documented: https://developer.mozilla.org/en-US/docs/Web/API/Document.evaluate Expand snippet There’s also a great introduction on mozilla developer network: https://developer.mozilla.org/en-US/docs/Introduction_to_using_XPath_in_JavaScript#document.evaluate Alternative version, using XPathEvaluator: Show code snippet
How to access Session variables and set them in javascript?
Accessing & Assigning the Session Variable using Javascript: Assigning the ASP.NET Session Variable using Javascript: Accessing ASP.NET Session variable using Javascript:
How do I pass the this context to a function?
Javascripts .call() and .apply() methods allow you to set the context for a function. Now you can call: Which would alert FOO. The other way around, passing obj_b would alert BAR!!. The difference between .call() and .apply() is that .call() takes a comma separated list if you’re passing arguments to your function and .apply() needs … Read more
how to get the value of a textarea in jquery?
Value of textarea is also taken with val method:
Scope Chain in Javascript
To understand the scope chain you must know how closures work. A closure is formed when you nest functions, inner functions can refer to the variables present in their outer enclosing functions even after their parent functions have already executed. JavaScript resolves identifiers within a particular context by traversing up the scope chain, moving from … Read more
How can I copy to clipboard in HTML5 without using flash?
You can use the HTML5 clipboard api http://www.htmlgoodies.com/html5/other/working-with-clipboard-apis-in-html5-web-apps.html#fbid=eh9tM7GHJWF But do note that not all browsers fully support it as of now: http://caniuse.com/#feat=clipboard