!DOCTYPE htmlhtml lang="en"head meta charset="UTF-8" titleTitle/title/headbodytextarea id="allCount" rows="3" cols="100"湖南印象,六扇门,小郡肝,西餐/textareabutton id="btn1" onclick="test()"选哪个呢/buttonscript function test
<!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>