Golang template handling the difference between the syntax of parse and Parsefiles

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Golang can choose to get a template from a string or file .
String through the parse function
File via Parsefiles function
The two writing some differences, easy to confuse, the author of a half-day pit, hereby make a summary.

Package Mainimport ("Html/template" "OS" "Log" "FMT") var tplstring= ' <! DOCTYPE html>

The output results are as follows: