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indexOf(“1”) returns -1 , when there is a 1 in my array

indexOf(“1”) returns -1 , when there is a 1 in my array. I want to know where every position of “1” is, cause I want to eventually want to create a loop to count every how many time “1” is in the array. Answer how about this: and you get 1. if you use: you get -1

D3 Bar Chart Negative Values not Showing Up

In my bar chart, I have both negative values and positive values, but the problem is, The negative bars don’t get plotted in the opposite direction (Inverted) rather, they are plotted in the same direction as the positive bars. I understand, the Y-Axis domain, can’t start with 0 when dealing with …

from a string that contains a date range

when you born in 1995 you also can make a friend 2002 but also not exactly than 1788. The result should be [1995, 1788] Answer Check this snippet, I used a regex to extract all the numbers from 0 to 9999 from the text, then filtered all the matches to get only numbers inside the given range.

Need help on Checkbox onclick jquery

trying to learn jquery and made a simple checkbox with a function where you can make all the options read-only checking on “none of the above” button. this will be the output and the last checkbox will make it read-only I want the same result but not putting onclick on the html file, instead using…

Access latest state in useMemo

I am using react-quill, and it’s requirement is that modules prop must be cached and shouldn’t change. I am using useMemo hook to memoize it. The object is: and it’s used like: handleFunc in modules object, just console logs value prop. The issue is that value is not latest, it’s the f…