What is the best way to incorporate a vanilla javascript function into a vue.js application?

Question

What is the best way to incorporate a vanilla javascript function into a vue.js application?

Consider a vanilla JavaScript function like this:

if (window.devicePixelRatio >= 2) {
            document.querySelectorAll('img.retina').forEach(function (e) {

     let parts = e.src.split('.');
     let ext = parts.pop();

     if (parts.join('.').indexOf('@2x') == -1) e.src =  parts.join('.') + '@2x.' + ext;

  });

}

This function changes the src of an image when a retina display is detected. How can one incorporate this function into an application built with vue.js? Where should the function be placed?

If the function is placed in mounted, it only works on the initial page load and not when navigating through SPA pages using the router:

new Vue({
el: "#app",
router,
    render: h => h(App),
    mounted() {
        retinaFunction();
    },
})

The specific details of the retina function are not crucial, the main question is how to effectively utilize custom vanilla JavaScript functions within a vue.js application.

javascript vue.js

Answer 1

Answer №1

It is recommended to ensure that your code works within the mounted lifecycle hook. Are you making your modifications directly on this.$el.... or using a different approach?

Remember to check the documentation for any potential limitations, which can be found at https://v2.vuejs.org/v2/api/#mounted

Keep in mind that not all child components may have been mounted when the parent component's mounted hook is called. If you need to wait until the entire view has finished rendering, consider utilizing vm.$nextTick inside the mounted hook:

If you are working with child components, make sure to bundle them accordingly. Here is an example snippet of how you can handle this scenario:

mounted(){
  this.$nextTick(() => {
    // Your code logic here
  });
}

Answer 2

It is recommended to ensure that your code works within the mounted lifecycle hook. Are you making your modifications directly on this.$el.... or using a different approach?

Remember to check the documentation for any potential limitations, which can be found at https://v2.vuejs.org/v2/api/#mounted

Keep in mind that not all child components may have been mounted when the parent component's mounted hook is called. If you need to wait until the entire view has finished rendering, consider utilizing vm.$nextTick inside the mounted hook:

If you are working with child components, make sure to bundle them accordingly. Here is an example snippet of how you can handle this scenario:

mounted(){
  this.$nextTick(() => {
    // Your code logic here
  });
}

What is the best way to incorporate a vanilla javascript function into a vue.js application?

Answer №1

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