export const getImgUrl = function(src, width = 300, height = 300, mode = 2) {
    return src ? src.replace(/(\{width}|\{height}|\{mode})/g, function($0) {
        const dict = {
            '{width}': width,
            '{height}': height,
            '{mode}': mode || 2
        };

        return dict[$0];
    }).replace(/https?:/, '') + '/interlace/1' : '';
};


export const replaceHttp = function(src) {
    return src.replace(/https?:/, '');
};


export const debounce = (idle, action) => { // 函数去抖动，超过一定时间才会执行，如果周期内触发，充值计时器
    let last;

    return function() {
        let args = arguments;

        if (last) {
            clearTimeout(last);
        }
        last = setTimeout(() => {
            action.apply(this, args);
        }, idle);
    };
};


export const throttle = (delay, action) => { // 函数节流器，定义函数执行间隔，按频率触发函数
    let last = 0;

    return function() {
        let args = arguments;
        let curr = +new Date();

        if (curr - last > delay) {
            action.apply(this, args);
            last = curr;
        }
    };
};