This question already has answers here: How do I return the response from an asynchronous call? (41 answers) Closed 25 days ago. I am trying to get a cookie specifically from a domain using this code: The problem is that the alert always says undefined. However, if I change to it works properly. How do I save…
Best way to share constants between Javascript & CSS
I’m creating a website with lots of dynamic stuff laid out in javascript, as well as CSS. What’s bothering me is that half of my dimension constants (positions and sizes of things on the page) are in my javascript, whereas others are in my CSS. Is there a good way to have a “single placeR…
How to get all selected values of a multiple select box?
I have a <select> element with the multiple attribute. How can I get this element’s selected values using JavaScript? Here’s what I’m trying: Answer No jQuery: Quick example:
How to make this regex replace work on all characters, not just the first?
I’m trying to replace all spaces within a string with hyphens. I tried this: But it only replaces the first instance of a space and not the ones after it. What is the regex to make it replace all empty spaces? Answer try the g flag is key here. it means global replace, ie replace all
Confirmation delete window – deleting record when click delete or cancel
I have a Javascript file that contains the function for calling the confirmation delete window, the code used is similar to the following: I have a gridview with a template field that can delete a row in the gridview, this is a snippet of what I have: Within the aspx.vb page I have code to do the deletion of …
Create an array with random values
How can I create an array with 40 elements, with random values from 0 to 39 ? Like I tried using solutions from here: http://freewebdesigntutorials.com/javaScriptTutorials/jsArrayObject/randomizeArrayElements.htm but the array I get is very little randomized. It generates a lot of blocks of successive numbers…
Do tags only go in the tag?
Is it possible/good practice to use <link href””> to include stylesheets outside of the <head> tag, or do they only work / should they be only used in <head>? Answer It’s possible to do it. It’s not recommended to do it, because whatever content comes before the <l…
Prevent scrolling of parent element when inner element scroll position reaches top/bottom?
I have a little “floating tool box” – a div with position:fixed; overflow:auto. Works just fine. But when scrolling inside that box (with the mouse wheel) and reaching the bottom OR top, the parent element “takes over” the “scroll request” : The document behind the to…
Browser Timeouts
Do browsers have built in timeouts and if so what are they? I have a page that does an AJAX call on a process that takes at most 5 minutes to run. Someone said browsers timeout after 2 minutes but didn’t know if there was any truth to that. Answer It’s browser dependent. “By default, Interne…
How to convert variables into json?
I want to send json data to ajax but how do you convert variables into json or convert an array to json? Answer If you really want to convert the data into JSON, you have to create an object or array and use JSON.stringify (available in newer browser and can be loaded form here): but you cannot just set the