1. problem ：

function npm-v Report errors ：npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead. 

 2. resolvent

① Open what you downloaded Node.js file , Find the following four files ：

 ② For this Four files Modify with the permission of （ Otherwise, the contents of the file cannot be modified ）：

Right click on the file - Select Properties - Choose safety - Select editor - choice users- Play after full control - Click application - determine

（ Be careful ： The permissions of the four files should be modified ！）

 ③ Open this Four files , Make statement replacement

The inside ：

prefix -g

  Replace with ：

prefix --location=global

  As shown in the figure ：

 （ Be careful ： This sentence of the four documents should be modified and replaced ！ Don't put the ` It's gone .）

④ Reopen cmd, function  npm -v   Test it , There should be no problem .

 ⑤ For the sake of insurance , To put npm Upgrade to the latest version

Open as administrator cmd Input ：

npm install -g npm-windows-upgrade

  Enter the green part （ Current latest version ）：

npm install -g [email protected]

end ！

Reference link ：

npm WARN config global `--global`, `--local` are deprecated. Use `--location Solution

solve npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead.