为什么身体上的负载不能用于chrome

I'm encountering a problem where my body onload="constructor()" is not being run. It works fine for me in firefox but I don't understand why it's not working for me in chrome. Here's the code I'm working with, I made a separate file and deleted everything to the bare minium to try figure out what was going wrong:I'm encountering a problem where my body onload