Error in Vue.js: Trying to access properties of an undefined object

My understanding of vue.js is limited, but based on what I know, this code should work. However, when attempting to access the variable in the data property, it seems unable to locate it.

data: function() {
    return {
        id: 0,
        clients: []
    }
},
methods: {
    getClientData(){
        fetch('/view-clients/' + this.id).then(function (response) {
            return response.text();
        }).then(function (data) {
            this.clients = JSON.parse(data);
            this.id = this.clients[clients.length - 1].id;
        }).catch(function (error) {
            console.log('Error: ' + error);
        });
    }
}

Answer №1

The issue may lie within the function scope. To ensure that this refers to the Vue component, consider using arrow functions instead.

data() {
    return {
        userId: 0,
        userList: []
    }
},
methods: {
    getUserList(){
        fetch('/get-users/' + this.userId).then((response) => response.text())
          .then((data) => {
            this.userList = JSON.parse(data);
            this.userId = this.userList[this.userList.length - 1].id;
          }).catch((error) => {
            console.log('Error occurred: ' + error);
          });
    }
}

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