I used this code to find the required portion from the json object from sJhonny’s Question Data Sample Function to find Use like so: This code is to select matching piece from the source. But what I want is to update the source object with new value and retrieve the updated source object. I want somethi…
Tag: javascript
Merge two objects and overwrite the values if conflict
I’m trying to merge two objects and overwrite the values in the process. Is it possible with underscore to do the following? (I’m fine with not using underscore I just want it to be simple) Answer You could use Underscore’s extend: The first argument is modified, so if you don’t want t…
JavaScript add another row in atable for unique id showing NAN value for id
I have a html table. Inside that my markup is like this: Now under that I have a button called Add a new line: in js file I have the createRow() function like this Now here everything is fine. As per js I can easily add another row. But when I checked the id of input fields I saw that
What is the best way to define dependent variables in an object?
In the Google developers recommendation for optimizing JavaScript code, they mention that the best way to declare/initialize new variables for object is to use the prototype. For instance, instead of: Use: However, in my case I have a dependency between variables, for instance: Using this.toWhom outside of th…
chrome.storage.sync.remove array doesn’t work
I am making a small Chrome extension. I would like to use chrome.storage but I can’t get it to delete multiple items (array) from storage. Single item removal works. Nothing seems to break but the last loop that alerts out what is in the storage still shows all the values I am trying to delete. Answer W…
how to call a phone number through javascript without using tag?
I designed a mobile web page. There I have a phone number field, which on clicking should call that particular number. I can’t use: Because I have added …
How to chain exceptions in javascript (ie add cause like in java)
Is there a standard / best practice way to add a cause of an exception in javascript. In java you might do this: When the resulting exception is printed, it’ll give you a nice trace that includes causes. Is there any good way to do this in javascript or do I have to roll my own? Answer In prod, we
Use dynamic (variable) string as regex pattern in JavaScript
I want to add a (variable) tag to values with regex, the pattern works fine with PHP but I have troubles implementing it into JavaScript. The pattern is (value is the variable): I escaped the backslashes: But this seem not to be right, I logged the pattern and its exactly what it should be. Any ideas? Answer …
Distinguishable Event tracking in function using Google Analytic
I’m trying to add an event tracking in my code in HTML/JS web page. So each time that a button is clicked a function executed and for each such execution I want a different event tracker. For example: If it is the first click then increase the first counter. if it is the second click, increase the secon…
Bootstrap tab activation with JQuery
I have the following code: And the following script: In this case when the page is ready, the second tab will be activated but I always get a JavaScript error in the line $(‘.tab-pane a[href=”#’ + tab + ‘”]’).tab(); Can anyone help me, please? Answer Applying a selector fro…