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Tag: reactjs

Change the background color based on what the fixed div is currently over

I have a NavBar with fixed position and there will be divs with different background color. when scrolling i want my nav to have the same color of the div that’s it is over. my goal for this is when scrolling the content of the other div does not overlap with the navbar content like this Answer You can change

Issues with CORS preflight Spring/React, reading from authorized/admin endpoint

Im new to both Java (spring) and React and the most issues I seem to get is by the annoying CORS. I did have same CORS issues before and by looking online I found serveral solutions, but mainly the …

react class based component vs classes in java

I’m newish to react and I’ve always thought of a class based component much like I do classes in Java. Is it correct to compare the two thinking of the class based component and class in Java? In …

react + spring boot upload file and form data

i have a case like in my form (front end), i can fill personal data (name, address, DOB) and then i can attach multiple image. In my spring boot controller : My model wrapper : Front end (React) Code : With above example, i always encounter errors. like : java.io.IOException: Stream closed and zero attachment length / zero attachment size

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