let dataList =["句子1","句子2","句子3","句子4"]
let div = document.getElementById('asd')
document.getElementsByTagName("button")[0].addEventListener("click",myFunc)
function myFunc(){
let x = parseInt(Math.random()* dataList.length )
div.innerHTML = dataList[x]
}
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let dataList =["句子1","句子2","句子3","句子4"] let div = document.getElementById('asd') document.getElementsByTagName("button")[0].addEventListener("click",myFunc) function myFunc(){ let x = parseInt(Math.random()* dataList.length ) div.innerHTML = dataList[x] }