var items = [
{name:'小白',age:'23'},
{name:'小白2',age:'23'},
{name:'小白3',age:'23'},
{name:'小白4',age:'23'},
{name:'小白5',age:'23'},
{name:'小白6',age:'23'},
{name:'小白7',age:'23'},
{name:'小白8',age:'23'},
{name:'小白9',age:'23'},
{name:'小白10',age:'23'}
];
//抽取随机数组
function getRandomArrayElements(arr, count) {
var shuffled = arr.slice(0), i = arr.length, min = i - count, temp, index;
while (i-- > min) {
index = Math.floor((i + 1) * Math.random());
temp = shuffled[index];
shuffled[index] = shuffled[i];
shuffled[i] = temp;
}
return shuffled.slice(min);
}
//打印
console.log( getRandomArrayElements(items, 4) );
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