<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<textarea id="allCount" rows="3" cols="100">
湖南印象,六扇门,小郡肝,西餐
</textarea>
<button id="btn1" onclick="test()">选哪个呢</button>
<script>
function test(){
// var string = "湖南印象,六扇门,小郡肝,西餐";
// var array = string.split(",");
// var value = array[Math.round(Math.random()*(array.length-1))];
// alert(value);
var allText = document.getElementById("allCount").value;
console.log(‘allText‘, allText);
var array = allText.split(",");
console.log(‘array‘,array);
var value = array[Math.round(Math.random()*(array.length-1))];
alert(value);
}
</script>
</body>
</html>
原文：https://www.cnblogs.com/Lauren-J/p/11502290.html