for循环返回[object Object]

Question

I want to look through an object but I am not sure what it actually contains, and when I loop as follows I get the following results:

<% for(var index in errors) {%>
    <%= errors[index] %>
<% } %>

[object Object] [object Object] [object Object] [object Object] [object Object]

I DO expect to get back 5 results, but I need to somehow delve deeper into the loop and get the actual content of the objects inside, but I do not know how to do that?

This is all plain javascript, the script above is just a templating engine for node/express.

Answer 1

stringify your objects before printing:

<% for(var index in errors) {%>
    <%= JSON.stringify(errors[index]) %>
<% } %>

Answer 2

The error object might be like, error={ {},{},{} } The format <%= %> , only prints the string value not the object literals, If you want to debug, you can write JSON.stringify(errors[index]) .

Or if you want to print the child elements use error[index]['childKeyName']