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<table>常用函数</table>
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<h1>Array 数组</h1>
原始数据： <sapn id="originalArray"></sapn><br />
slice(1,3) 索引1,2的数据: <span id="sliceoriginalArray"></span><br />
sort 排序: <span id="sortoriginaArray"></span><br />
<h1>--时间--</h1>
当前时间：<span id="spnCurrentDate"></span><br />
指定时间：<span id="spnTempDate"></span><br />
<h1>Math 对象用于执行数学任务</h1>
math.random 随机数 0-1之间<span id="spnRandom"></span><br />
math.round(9.8) 把一个数字舍入为最接近的整数之间<span id="spnRound"></span><br />
math.ceil(9.1) 对一个数进行上舍入:<span id="spnCeil"></span><br />
math.floor(9.8) 返回小于等于x的最大整数:<span id="spnFloor"></span><br />
math.PI 圆周率<span id="spnPI"></span><br />
计算eval("2+2*3"):<span id="spnEval"></span>
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<script type="text/javascript">
var originalArrays = new Array();
originalArrays[0] = "马超";
originalArrays[1] = "赵云";
originalArrays[2] = "刘备";
originalArrays[3] = "黄忠";
originalArrays[4] = "张飞";
originalArrays[5] = "关羽";
//Date
var currentDate = new Date();
document.getElementById("spnCurrentDate").innerText = currentDate;
var tempDate = new Date();
tempDate.setFullYear(2028, 08, 08);
tempDate.setHours(08, 08, 08);
document.getElementById("spnTempDate").innerText = tempDate;
var sliceoriginalArrays = originalArrays.slice(1, 3);
var sortoriginaArrays = JSON.parse(JSON.stringify(originalArrays)).sort()
document.getElementById("originalArray").innerText = originalArrays.toString();
document.getElementById("sliceoriginalArray").innerText = sliceoriginalArrays.toString();
document.getElementById("sortoriginaArray").innerText = sortoriginaArrays.toString();
document.getElementById("spnRandom").innerText = Math.random();
document.getElementById("spnRound").innerText = Math.round(9.8);
document.getElementById("spnCeil").innerText = Math.ceil(9.1);
document.getElementById("spnFloor").innerText = Math.floor(9.8);
document.getElementById("spnPI").innerText = Math.PI;
document.getElementById("spnEval").innerHTML = eval("2+2*3");
</script>
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标签：常用,函数,08,javaScript,originalArrays,getElementById,innerText,document,Math From： https://www.cnblogs.com/dwdw/p/16729494.html