• SVG 总结


    //文件名:11.svg
    <?
    xml version="1.0" encoding="UTF-8" ?> <!--XML NameSpace:名称空间,用于指定标签所处的语境--> <svg xmlns="http://www.w3.org/2000/svg" width="500" height="400"> <rect width="250" height="200"></rect> </svg>
    <!DOCTYPE html>
    <html>
    <head lang="en">
      <meta charset="UTF-8">
      <title></title>
    </head>
    <body>
      <h3>H5标准之前使用SVG图形的方法</h3>
      <img src="11.svg">
    </body>
    </html>
    <!DOCTYPE html>
    <html>
    <head lang="en">
      <meta charset="UTF-8">
      <title></title>
      <style>
        body {
          text-align: center;
        }
        svg {
          background: #dddddd;
          width: 500px;
          height: 400px;
        }
      </style>
    </head>
    <body>
    <!--<rect width="250" height="200"></rect>-->
      <h3>H5标准之后使用SVG标签的方法</h3>
      aa
      <svg>
        <rect width="250" height="200"></rect>
        <!--<div>ABC</div>-->
      </svg>
      bb
    </body>
    </html>

    svg 绘制矩形:

    效果:

    代码:

    <!DOCTYPE html>
    <html>
    <head lang="en">
      <meta charset="UTF-8">
      <title></title>
      <style>
        body {
          text-align: center;
        }
        svg {
          background: #ddd;
        }
      </style>
    </head>
    <body>
    <!--<div style="stroke:#000">ABCD</div>-->
    
      <h3>SVG绘图——矩形</h3>
      <svg width="500" height="400">
        <!--左上角-->
        <rect width="100" height="80"></rect>
        <!--右上角-->
        <rect width="100" height="80" x="400" y="0"></rect>
        <!--左下角-->
        <rect width="100" height="80" x="0" y="320" fill="#f00" fill-opacity=".3" stroke="#a00" stroke-width="5" stroke-opacity=".8"></rect>
        <!--右下角-->
        <rect id="r4" width="100" height="80" x="400" y="320" style="fill:#0f0;stroke:#060;"></rect>
      </svg>
    <script>
      //不能使用HTML DOM方式来访问SVG元素的属性
      //r4.width = 10;
      //r4.height = 800;
      //r4.x = 250;
      //r4.x.baseVal.value = 250;
    
      //使用核心DOM操作来访问SVG元素的属性
      var x = r4.getAttribute('x');
      console.log(x); //400
      console.log(typeof x);//string
      r4.setAttribute('x', '250');
    </script>
    
    </body>
    </html>

    svg绘制矩形2: 鼠标移入改变颜色:

    结果:

    代码:

    <!DOCTYPE html>
    <html>
    <head lang="en">
      <meta charset="UTF-8">
      <title></title>
      <style>
        body {
          text-align: center;
        }
        svg {
          background: #ddd;
        }
      </style>
    </head>
    <body>
      <h3>SVG绘图——矩形</h3>
      <svg width="500" height="400">
        <rect id="r1" width="100" height="80" x="200" y="160" fill="#0ff" fill-opacity=".3" stroke="#f00" stroke-opacity=".3"></rect>
      </svg>
      <script>
        r1.onmouseenter = function(){
          this.setAttribute('fill-opacity',1)
          this.setAttribute('stroke-opacity',1)
        }
        r1.onmouseleave = function(){
          this.setAttribute('fill-opacity',.3)
          this.setAttribute('stroke-opacity',.3)
        }
      </script>
    
    </body>
    </html>

    svg绘制矩形3 点击改变宽度:

    效果:

    代码:

    <!DOCTYPE html>
    <html>
    <head lang="en">
      <meta charset="UTF-8">
      <title></title>
      <style>
        body {
          text-align: center;
        }
        svg {
          background: #ddd;
        }
      </style>
    </head>
    <body>
      <h3>SVG绘图——矩形</h3>
      <svg width="500" height="400">
        <!--<rect id="r1" width="100" height="80"></rect>-->
        <rect id="r1" width="100" height="80" x="0"></rect>
      </svg>
      <script>
        r1.onclick = function(){
          setInterval(function(){
            /*var x = r1.getAttribute('x');
            x = parseFloat(x);
            x += 10;
            r1.setAttribute('x', x);*/
    
            var w = r1.getAttribute('width');
            w = parseFloat(w);
            w += 5;
            r1.setAttribute('width', w);
          },50)
        }
      </script>
    
    </body>
    </html>

     svg绘制矩形4 绘制部门统计表:

    效果:

    代码:

    <!DOCTYPE html>
    <html>
    <head lang="en">
      <meta charset="UTF-8">
      <title></title>
      <style>
        body {
          text-align: center;
        }
        svg {
          background: #ddd;
        }
      </style>
    </head>
    <body>
      <h3>SVG绘图——矩形</h3>
      <svg id="svg17" width="500" height="400">
      </svg>
      <script>
        var list = [
          {label: '部门1', value: 250},
          {label: '部门2', value: 300},
          {label: '部门3', value: 280}
        ];
        /***为SVG上动态的添加新的图形元素***/
        //方式1:HTML字符串拼接
        /*var html = '';
        for(var i=0; i<list.length; i++){
          var d = list[i];
          html += `
            <rect width="50" height="${d.value}" x="${(2*i+1)*50}" y="50"></rect>
          `;
        }
        svg17.innerHTML = html;*/
        //方式2:动态创建新的DOM元素
        for(var i=0; i<list.length; i++){
          //var r = document.createElement('rect'); //新元素的名称空间默认为html空间
          var r = document.createElementNS('http://www.w3.org/2000/svg', 'rect');
          r.setAttribute('width', 50);
          r.setAttribute('height', list[i].value);
          r.setAttribute('x', (2*i+1)*50);
          svg17.appendChild(r);
        }
    
      </script>
    
    </body>
    </html>

     svg 绘制圆形:

    结果:

    代码:

    <!DOCTYPE html>
    <html>
    <head lang="en">
      <meta charset="UTF-8">
      <title></title>
      <style>
        body {
          text-align: center;
        }
        svg {
          background: #ddd;
        }
      </style>
    </head>
    <body>
      <h3>SVG绘图——圆形</h3>
      <svg id="svg17" width="500" height="400">
        <circle r="50" cx="250" cy="200"></circle>
      </svg>
    
    
      <script>
    
      </script>
    
    </body>
    </html>
  • 相关阅读:
    kali linux 换国内源
    虚拟机桥接网络上网
    excel 无效引用 所引用的单元格不能位于256列
    sublime python配置运行
    java 环境变量配置(win10)
    Python错误:AssertionError: group argument must be None for now
    python if not
    ubuntu 安装mysql
    python 利用jieba库词频统计
    zxy的猪错误
  • 原文地址:https://www.cnblogs.com/web-fusheng/p/6910207.html
Copyright © 2020-2023  润新知