js arguments All in One

js arguments All in One

js arguments All in One

    function rewriteHistory (type) {
        const origin = window.history[type];
        return function () {
            const rs = origin.apply(this, arguments);
            // ✅ 1. 添加自定义事件
            const e = new Event(type.toLocaleLowerCase());
            e.arguments = arguments;
            // ✅ 2. 自动触发自定义事件
            window.dispatchEvent(e);
            return rs;
        };
    }

​

arguments

​

const log = console.log;
function func(a, b, c) {
  log(`this =`, this);
  // "this =" [object Window]
  log(`arguments =`, arguments);
  // "arguments =" Object { 0: 1, 1: 2, 2: 3 }
  log(arguments[0]);
  // 1
  log(arguments[1]);
  // 2
  log(arguments[2]);
  // 3
}

CustomEvent

    setCustomEvent (type = 'click', data = {}) {
        const customEvent = new CustomEvent(type, {
            detail: data,
        });
        window.dispatchEvent(customEvent);
    }

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