【typescript】簡單公用方法
阿新 • • 發佈:2018-11-07
/**範圍內獲取整數隨機數*/
/**範圍內獲取整數隨機數*/
function getRandomInt(min: number, max: number): number {
var Range = max - min;
var Rand = Math.random();
return(min + Math.round(Rand * Range));
}
判斷Object是否為空
function isEmptyObject(obj) { for (var key in obj){ return false;//返回false,不為空物件 } return true;//返回true,為空物件 }
滾動數值
private maxNum:number = 0; /* 滾動數字效果。 maxNum:結果數值, txtNode: eui.BitmapLabel:需要變化的節點*/ function onNumChange(maxNum: number, txtNode: eui.BitmapLabel) { if(maxNum > this.maxNum) this.maxNum = maxNum; let nowNum = Number(txtNode.text);//原顯示數字 nowNum += Math.ceil((maxNum-nowNum) / 10); // console.log(nowNum , maxNum,"___nowNum , maxNum________") if (nowNum < maxNum) { txtNode.text = nowNum.toString(); this._changeTimeOut = setTimeout2(() => { this.onNumChange(maxNum, txtNode); }, 30); } else { txtNode.text = maxNum.toString(); if(this.maxNum == maxNum){ clearTimeout2(this._changeTimeOut); this.maxNum = 0; } } } function setTimeout2(closure: Function, delay: number, ...parameters): number { var si: number = setTimeout(exec, delay, closure, delay, parameters); function exec(func: Function, delay: number, arg: Array<any> = null): void { clearTimeout2(si); func.apply(null, arg); closure = null; } return si; } function clearTimeout2(si:number):void{ clearTimeout(si); }