d3.js path.toString()用法及代码示例

d3.js中的path.toString()函数用于返回所绘制形状的路径的字符串表示形式。路径表示符合SVG的路径数据规范。

用法:

path.toString()

参数：该函数不接受任何参数。

返回值：该函数返回一个字符串。

范例1：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" path1tent= 
        "width=device-width,initial-scale=1.0"> 
  
    <script src= 
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
  
    <style> 
        h1 { 
            color:green; 
        } 
  
        svg { 
            background-color:#f2f2f2; 
        } 
  
        .path2 { 
            stroke:#000; 
        } 
    </style> 
</head> 
  
<body> 
    <div> 
        <svg width="100" height="100"> 
            <path class="path2"> 
        </svg> 
    </div> 
  
    <script> 
  
        // Creating a path  
        var path = d3.path(); 
        path.moveTo(10, 10); 
        path.bezierCurveTo(95, 10, 50, 90, 10, 10) 
          
        // Printing the string of the path 
        console.log(path.toString()) 
        path.bezierCurveTo(90, 10, 15, 110, 10, 10) 
          
        // Closing the path  
        path.closePath(); 
        d3.select(".path2").attr("d", path);  
    </script> 
</body> 
  
</html>

输出：此形状的路径字符串在控制台中给出。

范例2：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" path1tent= 
        "width=device-width, initial-scale=1.0"> 
  
    <script src= 
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
  
    <style> 
        h1 { 
            color:green; 
        } 
  
        svg { 
            background-color:#f2f2f2; 
        } 
  
        .path2 { 
            stroke:#000; 
        } 
    </style> 
</head> 
  
<body> 
    <div> 
        <svg width="100" height="100"> 
            <path class="path2"> 
        </svg> 
    </div> 
  
    <script> 
  
        // Creating a path  
        var path = d3.path(); 
        path.moveTo(10, 10); 
          
        // Making line to x:90 and y:10  
        path.lineTo(90, 10); 
          
        // Closing the path  
        path.closePath(); 
        path.moveTo(90, 10); 
        path.lineTo(90, 90); 
          
        // Closing the path  
        path.closePath(); 
        path.moveTo(90, 90); 
        path.lineTo(10, 90); 
          
        // Closing the path  
        path.closePath(); 
        path.moveTo(10, 90); 
        path.lineTo(10, 10); 
          
        // Closing the path  
        path.closePath(); 
          
        // Printing the string of the path 
        console.log(path.toString()) 
        d3.select(".path2").attr("d", path);  
    </script> 
</body> 
  
</html>

输出：控制台中提供了正方形的路径字符串。

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注：本文由纯净天空筛选整理自tarun007大神的英文原创作品 D3.js path.toString() Function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。