node.js module, variable get changes from other module

YouTube Excerpt: A variable outside a function, the function get exported. When not noticed, the variable get changed else-where. We build the case, What we are going to see is the variable can be changed by any module using it. This can be suprise if we don't know what's happening. We declare a local variable, but it can be changed by any function that can access the variable, it can be from some where we don't know. To avoid the un-expected changes, we should not write codes as shown here. It's not good or bad if you know it. # we have 3 files, the first been use by the next two. - moda.js - chk-moda.js - see-moda.js - then we go to the node.js shell, REPL # refs https://nodejs.org/api/modules.html http://www.w3schools.com/js/js_timing.asp http://stackoverflow.com/questions/9210542/node-js-require-cache-possible-to-invalidate https://github.com/goodagood/gg #end

A variable outside a function, the function get exported. When not noticed, the variable get changed else-where. We build the case, What we are...

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