Can we run Vue.js from Code Playground?

Question

https://code.sololearn.com/WSVbt1CIc2Rz

Answer 1

Embed all your code in the JS tab in a function assigned to the 'onload' event of the 'window' object:

window.onload=function() {
var app = new Vue({
el: '#app',
data: {
message: 'Hello Vue!'
}
})
};

Answer 2

Write your JS code inside onload of body.