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JavaScript

Camilla Westin
Camilla Westin
18,693 Points
Posted by Camilla Westin
Camilla Westin
18,693 Points

vue.js Computed property: Syntax error: Unexpected token this

I get the error "Uncaught SyntaxError: Unexpected token this" when trying to add my computed property. What have i missed?

<select v-on:change="filterType">
        <option>Sort by type</option>
        <option v-for="task in uniqueItemsList"> {{ task }}</option>
</select>

new Vue({
    el: '#taskmanager',
    data: {
      tasks: tasks,
      newName: '',
      newDescription: '',
      type: '',
      error: false
    },
    methods: {
      toggleTask: function(task){
          task.opened = !task.opened;
      },
      addNew: function() {
        if(!this.newName || !this.newDescription) {
          this.error = true;
        } else {
          this.tasks.push({
            name: this.newName,
            description: this.newDescription,
            opened: false
          });
          this.newName = '',
          this.newDescription = '',
          this.error = false
        }
      },
      filterType: function() {
        this.type = event.target.value;
      }
    },
    computed: {
      uniqueItemsList: function (){
        const types = [];
        this.tasks.forEach(task)=>{
          if (!types.includes(task.type)){
            types.push(task.type);
          }
        });
        return types;
      }
    }
});

Mod Note - Added markdown to code for readability.

2 Answers

Adam N
Adam N
70,280 Points
Adam N
Adam N
70,280 Points

Double check that your forEach method is being closed in the right spot.

One hint is: since you're passing an arrow func with one parameter to forEach, you can leave off the parenthesis around the parameter.

Let me know if this helps here

Camilla Westin
Camilla Westin
18,693 Points
Camilla Westin
Camilla Westin
18,693 Points

I'm afraid not :( I feel like I have watched this video a million times now :P How would it look if I left off the parenthesis around the parameter?

Camilla Westin
Camilla Westin
18,693 Points
Camilla Westin
Camilla Westin
18,693 Points

Ok so I did this:

this.tasks.forEach(function(task){
     if (!types.includes(task.type)){
        types.push(task.type);
      }
});

And it works! But was that what you were saying I should do?

Adam N
Adam N
70,280 Points

My route would've kept you using an arrow func. Your route does work, tho!

I was intending for you to edit the original code to make it look like this:

this.tasks.forEach(task=>{

The ) after task was closing your forEach at that point, which was too early for it to close.