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JavaScript

03-03.svg：源码内容

							<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg" width="400" height="500" viewBox="0 0 400 500" style="font-weight:bold;font-family:arial,'lucida console',sans-serif,榛戜綋;font-size:14px;">
    <defs>
        <linearGradient id="line" x1="50%" x2="50%" y1="0%" y2="100%">
            <stop offset="20%" stop-color="#88AAEE"/>
            <stop offset="100%" stop-color="#224499"/>
        </linearGradient>
        <marker id="arrow" markerWidth="10" markerHeight="8" refX="4" refY="4" orient="auto">
            <path d="M0,0 8,4 0,8Z" fill="white" stroke="black"/>
        </marker>
        <g id="bg">
            <rect x="0" y="0" width="10" height="10" rx="5" ry="5"
                stroke="#223388" stroke-width="2" fill="url(#line)"/>
        </g>
    </defs>
    <rect x="0" y="0" width="400" height="500" fill="white"/>
    <g transform="translate(10,10)">
        <g transform="translate(0,100)">
            <circle cx="100" cy="50" r="55" stroke="#223388" stroke-width="2" fill="url(#line)"/>
            <text x="50" y="55" fill="white">onMouseDown</text>
            <line x1="140" y1="90" x2="155" y2="110" stroke="black" marker-end="url(#arrow)"/>
        </g>
        <g transform="translate(100,200)">
            <circle cx="100" cy="50" r="55" stroke="#223388" stroke-width="2" fill="url(#line)"/>
            <text x="50" y="55" fill="white">onMouseMove</text>
            <line x1="140" y1="10" x2="155" y2="-10" stroke="black" marker-end="url(#arrow)"/>
        </g>
        <g transform="translate(200,100)">
            <circle cx="100" cy="50" r="55" stroke="#223388" stroke-width="2" fill="url(#line)"/>
            <text x="60" y="55" fill="white">onMouseUp</text>
        </g>
    </g>
</svg>

						