js中的math对象
<script type
="text/javascript">
console
.log(Math
.PI)
console
.log(Math
.abs(-1))
console
.log(Math
.ceil(0.9))
console
.log(Math
.floor(0.9))
console
.log(Math
.round(0.9))
console
.log(Math
.random(1))
var arr
= [1,2,3]
var item
= arr
.join();
console
.log(Math
.max(1,2,3));
console
.log(Math
.min(1,2,3));
</script
>
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