How does js store the index value of each click

Question

This question may be relatively weak, but I really haven't found a good way to solve it, and there are no other front-ends around to ask. Thank you all in advance... There is such a demand, the dom is like a set of buttons, I want to record it The index value of each click, I wrote a cookie to record it before... But finally...

给我你的怀抱 · Answer

Memory function, remember button index value and number of clicks, of course, you can also remember the historical click index sequence

/* 记忆button索引值及点击次数还有序列 */
function memoizer() {
    let buttonIndexClickTimeHistory = {};
    let buttonIndexClickQueueHistory = [];
    return function(idx) {
        if (typeof buttonIndexClickTimeHistory[idx] === 'number') {
            buttonIndexClickTimeHistory[idx] ++;
        } else {
            buttonIndexClickTimeHistory[idx] = 1;
        }
        buttonIndexClickQueueHistory.push(idx);
        return {
            buttonIndexClickTimeHistory,
            buttonIndexClickQueueHistory
        };
    };
}

const f = memoizer();

$('.button').on('click', function() {
    console.log(f($(this).index()));
});

黄舟 · Answer

Put console.log(click_num); in the click function, so that you can monitor the value assigned to each click

三叔 · Answer

You can try localstorage sessionstorage

大家讲道理 · Answer


$('.button').click(function() {
    console.log($(this).index());
});

PHP中文网 · Answer

It is more reasonable to save index in a variable;
If you want to print index every time, put console.log() in the click event