javascript - writing ejs in a script is giving me the error 'Expression expected' - Stack Overflow

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I have a script tag in my show.ejs file, and I have the following line:

<script>
    const post = <%- JSON.stringify(post) %>
</script>

I'm getting the error of 'Error Expected' on both the opening and closing ejs tags. I was wondering why this error occurs and if there was anything I'm doing that isn't allowed.

I have a script tag in my show.ejs file, and I have the following line:

<script>
    const post = <%- JSON.stringify(post) %>
</script>

I'm getting the error of 'Error Expected' on both the opening and closing ejs tags. I was wondering why this error occurs and if there was anything I'm doing that isn't allowed.

• javascript
• node.js
• ejs

Share Improve this question Follow asked Mar 27, 2021 at 3:13 zakzak 8933 silver badges1212 bronze badges 1

• Are you sure your ejs file is being interpreted as ejs and not a normal html file? Please post the relevant parts of your server code. – SuperStormer Commented Mar 27, 2021 at 3:15

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3 Answers 3

Sorted by: Reset to default 16

I just have same issue with VS code if you using VS you need to add to end of settings.json in cofiguration of html this line

"html.validate.scripts": false,

find html in bottom right

then find configure HTML language and add line to end of json file

There are 2 optional ways.

1)

Change the global delimiters of EJS.

const ejs = require("ejs");

ejs.delimiter = '/';
ejs.openDelimiter = '[';
ejs.closeDelimiter = ']';

Update your script.

<script>
const post= [/- JSON.stringify(post) /];
</script>

2)

Add this property to settings.json in VSCode.

"html.validate.scripts": false

Change the global delimiters of EJS.

const ejs = require("ejs");

ejs.delimiter = '?';
ejs.openDelimiter = '[';
ejs.closeDelimiter = ']';

Update your script.

<script>
const post= [?- JSON.stringify(post) ?];
</script>

Note: Auto format will work correctly in 2 ways.

Note: I prefer the first one because I can use both auto format and scripts validation and I don't need any EJS extension.

This is the answer that worked for me after 2 days of searching and finding nothing.

As for some reason that syntax inside script does not work properly, what you can do is use a data attribute inside html part of the ejs file.

<div id="postData" post="<%= post%>"></div>

And then get the value inside script part of the code.

<script> const post= document.getElementById('postData').getAttribute('post'); </script>

Hope this helps, I guess in this way it works as intended, at least it did for me.

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