Node Js + Express + Ejs. Cannot Read Property 'option0' Of Undefined

app.js var options = { option0: 11, option1: 'option1', option2: 'option2', option3: 'option3', option4: 'option4', option5: 'option5', option6: 'option6', option7: 'option7', opti

Solution 1:

You have passed the options as a reference object for the property opt.So opt will now point to { option0: 11, option1: 'option1', ...} and your render function becomes

res.render('main', {opt : { option0: 11, option1: 'option1', ...}});

So when you try to access opt.options.option0 , opt.options becomes undefined and throws error

Thus you should be using `

<% for (let i in opt) { %>
    <% optionName = 'option' + i %>
    <optionvalue="<%= i %>"><%= opt[i] %></option>
<% } %>

`