I need fresh eyes to fix VUE props not working - vue.js

Question

This is a silly task in VUE.JS... but I'm missing it.
I have a sub parent component having:
<teamPlayers :teamId="team.id_team"></teamPlayers>
The value teamId is sent to the child component and it works: I can see the value in child template <h2>{{teamId}}</h2> properly.
But in same child component I got undefined inside the methods using this.teamId.
Here the whole child code:
export default {
props: ['teamId'],
methods: {
getJokess: function () {
console.log(this.teamId);
},
},
created() {
this.getJokess();
}
}
The console should return the correct value but it returns undefined instead of the {{teamId}} is render perfectly.

Answer 1

All that I can think of is that teams may not be declared in your data() function. If it isn't it won't be reactive. Consider the example below:
const teamPlayers = {
props: ["teamId"],
methods: {
getJokess() {
console.log(this.teamId);
}
},
created() {
this.getJokess();
},
template: "<h2>{{teamId}}</h2>"
};
const app = new Vue({
el: "#app",
components: {
"team-players": teamPlayers
},
data() {
return {
teams: []
};
},
mounted() {
setTimeout(() => {
this.teams = [{
id_team: "fizz"
},
{
id_team: "buzz"
},
{
id_team: "foo"
},
{
id_team: "bar"
}
]
}, 1000);
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<div v-for="team of teams">
<team-players :team-id="team"></team-players>
</div>
</div>