Node.JS / Express / Mongo：TypeError：无法读取未定义的属性“位置”

Question

I've gone searching for other solutions to this problem and none of the solutions I've seen elsewhere seem to work for me. I have a form that I want to submit to a database. I'm using node.JS, express, mongo, and pug to render the HTML.

Here's my form:

.modal-content
form(method='POST' action='/insert' id='newReminders')
  input(type='text' name='location' id='location' placeholder='location')
  br
  input(type='textarea' name='reminder' rows='4' id='reminder' placeholder='type your reminder here')
  br
  button(type='submit' id='saveButton') save
span.close-button ×

And here's my server-side JS:

 app.post('/insert', (req, res) => { var dokoEntry = { reminder: req.body.location, content: req.body.reminder }; mongo.connect(url, function (err, db) { assert.equal(null, err); db.collection('reminders').insertOne(item, (err, result) => { assert.equal(null, err); console.log('Reminder inserted'); db.close(); }) }) res.redirect('/checkLocation'); }) 

Answer 1

The term location is a reserved property of The window object in browsers. When you define an id attribute on an element, the browser will assign the DOM element to a property in window by the value of id .

So, for example, for the element

<input id="location" />

your creating a property accessible via

window.location

However, window.location is a read-only property of the browser.

Try renaming that <input> element