How to open a Bootstrap modal without jQuery or bootstrap.js javascript?

Question

I\'m working on a VERY LIGHT survey application. This application runs in third world countries in locations with very limited connection.

We found that the loading-tim

Answer 1

We write private code for our modal.

let modal = document.getElementById('our-modal');
let modalContentElm = modal.querySelector('.modal-content');
let allModalButtons = modal.querySelectorAll('.modal-footer > .btn');
let outerClick = true;

let openStyle = () => { //MODAL SHOW
    modal.style.backgroundColor = 'rgba(0,0,0,0.5)';
    modal.style.display = 'block';
    setTimeout(() => { modal.style.opacity = 1; }); //FOR TRANSITION 
};
let closeStyle = () => { //MODAL HIDE
    modal.style.display = 'none';
    modal.style.opacity = 0;
};

//NO CLOSE MODAL WHEN YOU CLICK INSIDE MODAL
modalContentElm.onclick = () => {
    outerClick = false;
};

//CLOSE MODAL WHEN YOU CLICK OUTSIDE MODAL
modal.onclick = () => {
    if(outerClick){ closeStyle(); }
    outerClick = true;
};


for(let btn of allModalButtons){
    btn.onclick = () => {

        closeStyle();

        if(btn.getAttribute('id') === 'success-btn'){
            //PLEASE WRITE 'success-btn' IN THE ID VALUE OF THE CONFIRM BUTTON
            console.log('Click Yes');
        }
        else{
            console.log('Click Cancel');
        }
        //..... more else if or else for more modal buttons

    };
}

Whenever we want to open modal

openStyle();

Whenever we want to close modal on manuel

closeStyle();

It's a bit laborious, but it works. A more general class can be written.