1. Download and install the plug-in html snippets
In 2.settings.json configuration files.associations object.
Found setting.json file: File -> Preferences -> General Settings enter setting.json file editing
Then find the "Common Settings" in the files.associations objects in settings.json
Click edit flag on the left
In the pop-up editor editing area on the right, add the following
"files.associations": { "*.ejs":"html", "*.js":"html", "*.vue":"html" }, "emmet.triggerExpansionOnTab": true, "emmet.includeLanguages":{ "vue-html":"html", "vue":"html" }
Save.