How can I download a file that is in my server to my machine accessing a page in a nodeJS server? I’m using the ExpressJS and I’ve been trying this: But I can’t get the file name and the file type ( or extension ). Can anyone help me with that? Answer Update Express has a helper for this to
Javascript .replace command replace page text?
Can the JavaScript command .replace replace text in any webpage? I want to create a Chrome extension that replaces specific words in any webpage to say something else (example cake instead of pie). Answer The .replace method is a string operation, so it’s not immediately simple to run the operation on H…
Page reload in Chrome unnecessarily triggers bound events just prior to reloading the page
Hope someone has a good answer to this: Why does Chrome (14.0) triggers the document ready and window load events when I refresh the page? Note that I am not talking about what happens when the new page loads, but before it has loaded. See the following code: When I first visit page I get two outputs on conso…
Replace too long strings with “…”
Lets say we have a <div style=”width:100px;”>This text is too long to fit</div> The text in the div is dynamic. And I’d like to force the text to fit in width and not break. So i need some kind of functionality to test if the text is going to fit, and if it is not, then i’d…
How to create dictionary and add key value pairs dynamically in Javascript
From post: Sending a JSON array to be received as a Dictionary<string,string> I’m trying to do this same thing as that post, the only issue is that I don’t know what the keys and the values are upfront. So I need to be able to dynamically add the key and value pairs and I don’t know ho…
Wait until a condition is true?
I’m using navigator.geolocation.watchPosition in JavaScript, and I want a way to deal with the possibility that the user might submit a form relying on location before watchPosition has found its location. Ideally the user would see a ‘Waiting for location’ message periodically until the loc…
Cannot read property length of undefined
I am trying to simply check if I have an empty input text box but I get this error when I run this in Chrome: Uncaught TypeError: Cannot read property ‘length’ of undefined. Here is how I go about doing it. I check for DOM readiness and then call the function: Answer The id of the input seems is n…
Javascript Regular Expression Remove Spaces
So i’m writing a tiny little plugin for JQuery to remove spaces from a string. see here my regular expression is currently [ ]+ to collect all spaces. This works.. however It doesn’t leave a good taste in my mouth.. I also tried [s]+ and [W]+ but neither worked.. There has to be a better (more con…
from green to red color depend on percentage
I have a poll system and I want answers for this poll to be colored. For example: If it’s 10% it would be red, if 40% it would be yellow and if 80% it would be green, so I want my javascript code to use the rgb colors to make a color according to the given percentage. Now I want
missing ) in parenthetical
I keep getting that my javascript is missing ) in parenthetical [Break On This Error] if ( (this.scrollTop < this.scrollH…uches[0].pageY > scrollStartPosY+5) ) And I cannot for the life of me figure out why. Answer Try JS Lint. It’s great for finding non-obvious syntax errors on scripts.