<!DOCTYPE html><html><head><meta charset="utf-8"><title>7-76 課堂演示</title><link rel="stylesheet" type="text/css" href="style.css"><style type="text/css">div{margin: 15px auto;width: 200px;height: 200px;padding: 15px;border-radius: 200px;position: absolute;}</style></head><body><!-- <div id="div1"></div> --><script>// var div1=document.getElementById('div1')// function moveBall(e){// ?var sy=document.documentElement.scrollTop||document.body.scrollTop// ?div1.style.left=e.clientX+'px';// ?div1.style.top=e.clientY+sy+'px';// }// document.onmousemove=moveBallfunction myFun1(e){var num=30;var divs=document.getElementsByTagName('div')var body=document.getElementsByTagName('body')[0]for(var i=0;i<num;i++){var rad=Math.floor(Math.random()*10)+'px'divs[i]=document.createElement('div')divs[i].style.background='rgb('+4*i+','+2*i+','+i+')'divs[i].style.width=divs[i].style.height=raddivs[i].style.position='absolute'divs[0].style.left=e.clientX+'px';divs[0].style.top=e.clientY+'px';divs[i].style.left=e.clientX+Math.floor(Math.random()*10*i)+'px';divs[i].style.top=e.clientY+Math.floor(Math.random()*10*i)+'px';body.appendChild(divs[i])}}document.onmousemove=myFun1//document.onmousedown=myFun1</script></body></html>上面代碼中的divs[i].style.background='rgb('+4*i+','+2*i+','+i+')'這一行出xian報錯Uncaught TypeError: Cannot read property 'style' of undefined? ? at HTMLDocument.myFun1怎么解決
網(wǎng)頁頁面出現(xiàn)Cannot read property 'style' of undefined
慕村2502594
2018-03-12 21:05:41
