js实现华丽的九九乘法表效果

2019-11-19 16:59:32

字体：大中小

来源：转载

供稿：网友

效果图：

代码如下：

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>span实现的乘法表</title> <style type="text/css">  .wrap {   width: 800px;   margin: 20px auto;   -webkit-user-select: none;   -moz-user-select: none;   -ms-user-select: none;   user-select: none;  }  span {   padding: 3px;   font-weight: 700;   display: inline-block;   line-height: 30px;   border-bottom: 2px solid #000000;   border-left: 2px solid #000000;   width: 80px;   cursor: pointer;  }  .last {   margin-top: -2px;   border-top: 2px solid #000000;   border-right: 2px solid #000000;  }  .bg0 {   background-color: yellow;  }  .bg1 {   background-color: lawngreen;  }  .bg2 {   background-color: lightblue;  }  .hover {   background-color: #BB3BD9;  }  .only{   background-color: lightsalmon;  } </style></head><body><script> function multiplication(a) {  var str = '<div class="wrap">';  for (var i = 1; i <= a; i++) {   for (var j = 1; j <= i; j++) {    var curstr = j + ' x ' + i + '= ' + i * j;    j !== i ? str += '<span class="' + 'bg' + (i % 3) + '">' + curstr + '</span>' : str += '<span class="' + 'last bg' + (i % 3) + '">' + curstr + '</span><br/>';   }  }  str += "</div>";  document.write(str); } i multiplication(9); var oSpans = document.getElementsByTagName("span"); for (var i = 0; i < oSpans.length; i++) {  oSpans[i].onclick = function () {   //alert("我是第 "+parseInt(this.innerHTML)+" 行");   alert(this.innerHTML + " 我在第 " + this.innerHTML.charAt(4) + " 行");  }  oSpans[i].onmouseover = function () {   //console.log(111);   var num = this.innerHTML.charAt(4);   //console.log(num);   for (var j = 0; j < oSpans.length; j++) {    if (oSpans[j].innerHTML.charAt(4) === num) {     oSpans[j].classList.add("hover");    }   }   this.classList.add("only");  }  oSpans[i].onmouseout = function () {   var num = this.innerHTML.charAt(4);   for (var j = 0; j < oSpans.length; j++) {    if (oSpans[j].innerHTML.charAt(4) === num) {     oSpans[j].classList.remove("hover");    }   }   this.classList.remove("only");  } }</script></body></html>

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