var num = Math.random()*10; var num1 = Math.floor(num); // 向下取整 var num2 = Math.ceil(num); // 向上取整 document.write(num2+‘-<br>‘); document.write(num1); // 1-10 随机数 var a = Math.floor(Math.random()*10+1); console.log(a); function selectForm(min,max){ var ta = max - min + 1; return Math.floor(Math.random() * ta + min); } console.log(selectForm(3,5)); var colors = ["red","gree","blue","yellow","black"]; var color = colors[selectForm(0,colors.length-1)]; console.log(color);
时间: 2024-11-02 02:24:44