请输入代码JavaScript新手小白,请大家不要见笑,我想做个类似选项卡的东西,想点击button的时候,对应的内容展现,其他隐藏,但是我的代码出不来结果,看了半天也不知道错在那里,我想知道错在那里,请大神指教,谢谢!<!DOCTYPE html><html><head><style>ul>li{display:none;}.active{display:block;}</style><script>function m() { var obut = document.getElementsByTagName("button"); var oli = document.getElementsByTagName("li"); for (var i = 0; i < obut.length; i++) { obut[i].index = i; } if (oli[this.index].style.display == "none") { document.getElementsByClassName("active").style.display = "none "oli[this.index].ClassName = "active" }}</script></head><body> <div id="btn"> <button onclick="m()">box1</button> <button onclick="m()">box2</button> <button onclick="m()">box3</button> <button onclick="m()">box4</button> </div> <ul id="box"> <li><div class="active" >box1</div></li> <li><div >box2</div></li> <li><div >box3</div></li> <li><div >box4</div></li> </ul></body></html>
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