When simulating post data submission, the (+ and &) in the data is replaced with spaces, resulting in a data error!

When post data is used, data is usually sorted into data = "var1 = ABC & var2 = Def ". When the plus sign (+) or connector (&) exists in the data, some data is lost when the server receives the data.

After analyzing the format of post data transmission and the Javascript syntax, it is not difficult to find that:
1. "+": javascript is parsed as a string connector, so "+" is lost when the server receives data.
2. "&": javascript is parsed as a variable connector, so data after the & symbol is received by the server is lost.

The solution is also quite simple. You only need to encode + and & Symbol: + is encoded as % 2B & and % 26