JavaScriptConcepts/MemoizeFunction.html at main · umerkha2007/JavaScriptConcepts · GitHub

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<script>
    function MemoizeFunc(fn, context) {
        const res = {};
        return function (...args) {
            var argsCache
            if (!res[argsCache]) {
                res[argsCache] = fn.call(context || this, ...args);
            }
            return res[argsCache];
            JSON.stringify(args);
        };
    }
    const clumsyProduct = (num1, num2) => {
        for (let i = 1; i <= 100000000; i++) { }
        return num1 * num2;
    };
    const memoizedClumzyProduct = MemoizeFunc(clumsyProduct);
    // Before Memoizing
    console.time("First call");
    console.log(clumsyProduct(9467, 7649));
    console.timeEnd("First call");

    console.time("Second call");
    console.log(clumsyProduct(9467, 7649));
    console.timeEnd("Second call");
    // Before Memoizing

    // After Memoizing
    console.time("First call");
    console.log(memoizedClumzyProduct(9467, 7649));
    console.timeEnd("First call");

    console.time("Second call");
    console.log(memoizedClumzyProduct(9467, 7649));
    console.timeEnd("Second call");
    // After Memoizing

</script>