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saber-lang's Issues

增加 bind 函数

@treelite 看到你saber-viewport的更新，发现原来iOS 5.1.4之前不支持bind，估计你本地写好了，求更新 😆

throttle实现逻辑有问题

function throttle(fn, wait, options) {
        options = options || {};

        var context;
        var args;
        var timer;
        var last = 0;

        var task = function () {
            last = options.leading === false ? 0 : Date.now();
            fn.apply(options.context || context, args);

            // 这里应该加上重置 timer = null;
        };

        return function () {
            context = this;
            args = arguments;

            var now = Date.now();

            if (!last && options.leading === false) {
                last = now;
            }

            var remaining = wait - (now - last);
            if (remaining <= 0 || remaining > wait) {
                timer = clearTimeout(timer);
                last = now;
                fn.apply(options.context || context, args);
            }
            else if (!timer && options.trailing !== false) {
                timer = setTimeout(task, remaining);
            }
        };
    }

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