let library = {
    //数组元素位置替换
    swapArray: function(arr, index1, index2) {
        arr[index1] = arr.splice(index2, 1, arr[index1])[0];
        return arr;
    },
    swapLeft : function(arr) {
        let element = arr.shift();
        arr.push(element);
    },
    //生成指定范围随机整数
    randomFromIntRange: function(min, max) {
        return Math.floor(Math.random() * (max - min)) + min;
    },
    happenRate: function(rate) {
        let result = this.randomFromIntRange(0,100);
        if(result<rate)
        {
            return true;
        }
        else
        {
            return false;
        }
        return;
    },
    openInWebview () {
        let ua = navigator.userAgent.toLowerCase()
        if (ua.match(/MicroMessenger/i) == 'micromessenger') { // 微信浏览器判断
            return false
        } else if (ua.match(/QQ/i) == 'qq') { // QQ浏览器判断
            return false
        } else if (ua.match(/WeiBo/i) == "weibo") {
            return false
        } else {
            if (ua.match(/Android/i) != null) {
                return ua.match(/browser/i) == null
            } else if (ua.match(/iPhone/i) != null) {
                return ua.match(/safari/i) == null
            } else {
                return (ua.match(/macintosh/i) == null && ua.match(/windows/i) == null)
            }
        }
    },
    indexOf (arr,item) {
        for (let i = 0; i < arr.length; i++) {
            if (arr[i] == item) return i;
        }
        return -1;
    },
    remove(arr, item) {
        let index = arr.indexOf(item);
        if (index > -1) {
            arr.splice(index, 1);
        }
    },
    setImageBase64(base64Url,callback){
        let img = new Image();
        img.src = base64Url;
        img.onload = function(){
            let texture = new cc.Texture2D();
            texture.initWithElement(img);
            texture.handleLoadedTexture();
            if (callback)
                callback(texture);
        }
    },
};
module.exports = library;