In express.js you can get this error:<\/p>\n
\nTypeError: this.engine is not a function\n<\/pre>\nTypically this is caused by copy-pasting incomplete code from the internet.<\/p>\n
To fix it, you need to install a template engine and register it with Node. You also need to ensure your template files have the correct extension.<\/p>\n
For example, EJS is popular, and has HTML-like templates:<\/p>\n
\n
To make this available, install it from NPM:<\/p>\n
\n$ npm install --save ejs\nnpm WARN package.json image-annotation@1.0.0 No repository field.\nnpm WARN package.json image-annotation@1.0.0 No README data\nejs@2.4.1 node_modules\\ejs\n<\/pre>\nThen register it with express (the first argument is a magic string, and the second argument is how it will ‘require’ it)<\/p>\n
\napp.set('view engine', 'ejs'); \n<\/pre>\nThen, make sure you have “.ejs” as the file extension (it’s not clear why this is necessary, since ‘view engine’ seems to be a single value):<\/p>\n
\nres.render('search.ejs', output);\n<\/pre>\nYou can also require ejs yourself and call it directly, using the instructions in the documentation:<\/p>\n
\nlet ejs = require('ejs');\n\nvar template = ejs.compile(str, options);\ntemplate(data);\n\/\/ => Rendered HTML string \n \nejs.render(str, data, options);\n<\/pre>\n","protected":false},"excerpt":{"rendered":"In express.js you can get this error: TypeError: this.engine is not a function Typically this is caused by copy-pasting incomplete code from the internet. To fix it, you need to install a template engine and register it with Node. You also need to ensure your template files have the correct extension. For example, EJS is … <\/p>\n