随机阻止

Question

我从ID的块block1来block10.

像这样:

<div id="block1"></div>
<div id="block2"></div>
<div id="block3"></div>
<div id="block4"></div>
<div id="block5"></div>
<div id="block6"></div>
<div id="block7"></div>
<div id="block8"></div>
<div id="block9"></div>
<div id="block10"></div>

如何得到随机块,id范围从1到10？

Answer 1

var randomnumber=Math.floor(Math.random()*10) + 1;
var obj = document.getElementById('block' + randomnumber);

jQuery的:

var randomnumber=Math.floor(Math.random()*10) + 1;
var obj = $('#block' + randomnumber);