Trigger the component method in vue.js upon loading

Hello, I am still learning Vue.js and I am facing a challenge that seems simple but I am struggling to solve it. My goal is to make one of the component's methods execute every time it is loaded into the DOM. I have tried using v-on:load but it doesn't seem to be working in my current code.

Vue.component('graph', {
    props:['graphId','graphData'],
    template: '<canvas v-on:load="{{populateGraph()}}"></canvas>',
    methods: {
        initGraph: function () {
            var settlementBalanceBarChart = new Chart(this.graphId, {
                type: "bar",
                data: settlementBalanceBarData,
                options: settlementBalanceBarOptions
            });
        },
        //this is the function I would like to run
        populateGraph: function () {
            alert('{{graphId}}');
        }
    }

});

var vm = new Vue({
    el: "#app",
    mounted: function(){

    }

});

The same code works fine if I use the v-on:click event

Answer №1

If you need to handle certain events during the lifecycle of an instance, you can leverage instance lifecycle hooks. For instance:

Vue.component('chart', {
    props:['chartId','chartData'],
    template: '<canvas></canvas>',
    created: function () {
        console.log('{{chartId}}');
    },
    methods: {}
});

Answer №2

To properly call the function, you must prefix it with "this" as shown below:

var information =
{
   employees: []
}

var vueModel = new Vue({
    el: '#app',
    data: information,
    created: function () {
       this.getEmployees();
    },
    methods: {
         getEmployees: function () {
          vueModel.employees = [];
         }
    }

});

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