Today I’m going to show you how to solve a common error that you might encounter when working with Vue.js: Property or method not defined on the instance but referenced during render.
This error means that you are trying to use a property or a method in your template that is not defined in your data, computed, methods, or props options. For example, if you have something like this in your template:
<div>{{ message }}</div>
But you don’t have message defined anywhere in your script, you will get this error. To fix it, you need to either define message in your data or props, or remove it from your template.
Another possible cause of this error is that you are using a reserved word as a property or method name. For example, if you have something like this in your script:
data() {
return {
delete: 'some value'
}
}
And then you try to use delete in your template, you will get this error. This is because delete is a JavaScript keyword and Vue can’t use it as a property name. To fix it, you need to rename delete to something else, like remove or destroy.
A third possible cause of this error is that you are using a property or method name that conflicts with a Vue built-in property or method. For example, if you have something like this in your script:
methods: {
set: function() {
// some code
}
}
And then you try to use set in your template, you will get this error. This is because set is a Vue internal method and Vue can’t use it as a custom method name. To fix it, you need to rename set to something else, like assign or update.
I hope this helped you understand and solve the Property or method not defined on the instance but referenced during render error. If you have any questions or comments, feel free to leave them below. Thanks for reading and happy coding!