What to do if the tab key fails in vscode

Solution:

First, open the file --->Preferences--->Settings

(Learning video recommendation: java video tutorial)

Set as shown below:

Note: Don’t write it wrong, it’s a full-width problem. You can directly copy the following content:

"emmet.syntaxProfiles": {
"vue-html":"html",
"vue":"html"
}

In the future after v1.15.1, you will write like this

"emmet.triggerExpansionOnTab": true,
"emmet.includeLanguages": {
"vue-html": "html",
"vue": "html"
}

Finally, restart vscode.

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