vv13

function debounce(fn, delay) {
    let timerId = null;
    
    return (...args) => {
        clearTimeout(timerId);
        timerId = setTimeout(() => {
            fn(args)
        }, delay)
    }    
}

vv13

function throttle(fn, delay) {
    let lock = false;
    
    return (...args) => {
        if (lock) return;
        lock = true;
        setTimeout(() => {
            lock = false;
            fn(args)
        }, delay)

vv13

const en = ["\"", "'", ",", ".", "?", "!", "(", ")", "[", "]", "{", "}", ";"];
const cn = ["“", "‘", "，", "。", "？", "！", "（", "）", "【", "】", "「", "」", "；"];

const converter = (source, from, target) => {
  const map = new Map(from.map((item, index) => [item, target[index]]));
  return source.split('').map(item => map.get(item) || item).join('')
};

export const cn2enSymbol = (source) => converter(source, cn, en);
export const en2cnSymbol = (source) => converter(source, en, cn);