Canvas createRadialGradient() 方法

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var canvOK=1; try {c.getContext("2d");} catch (er) {canvOK=0;} if (canvOK==1) { var ctx=c.getContext("2d"); var grd=ctx.createRadialGradient(75,50,5,90,60,100); grd.addColorStop(0,"red"); grd.addColorStop(1,"white"); ctx.fillStyle=grd; ctx.fillRect(10,10,150,100); } } </script> <p>JavaScript:</p> <pre class="language-js"> var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d"); var grd=<mark>ctx.createRadialGradient(75,50,5,90,60,100)</mark>; grd.addColorStop(0,"red"); grd.addColorStop(1,"white"); // Kuwafua na mazungumzo wa rangi ctx.fillStyle=grd; ctx.fillRect(10,10,150,100); </pre> <p class="tiy"><a target="_blank" href="/sw/tiy/t.html?f=eg_html5_canvas_createradialgradient">Mfano wa kumaliza</a></p> </div> <div> <h2>Inasikitisha</h2> <pre>context.createRadialGradient(<i>x0</i>,<i>y0</i>,<i>r0</i>,<i>x1</i>,<i>y1</i>,<i>r1</i>);</pre> <h3>Kivinjili cha tafadhali chukue</h3> <table class="dataintable"> <tr> <th style="width:25%;">Tafadhali chukue</th> <th>Kutaja</th> </tr> <tr> <td><i>x0</i></td> <td>Ukingo wa x kwa mwaishio wa kuanza wa mazungumzo wa rangi.</td> </tr> <tr> <td><i>y0</i></td> <td>Ukingo wa y kwa mwaishio wa kuanza wa mazungumzo wa rangi.</td> </tr> <tr> <td><i>r0</i></td> <td>Makini ya mwaishio wa kuanza.</td> </tr> <tr> <td><i>x1</i></td> <td>Ukingo wa x kwa mwaishio wa mazungumzo wa rangi.</td> </tr> <tr> <td><i>y1</i></td> <td>Ukingo wa y kwa mwaishio wa mazungumzo wa rangi.</td> </tr> <tr> <td><i>r1</i></td> <td>Makini ya mazingira wa mwaishio.</td> </tr> </table> </div> <div> <h2>Mawasiliano wa browser</h2> <p>数字 katika tablio inaeza na browser ya kwanza inayosaidia ujaribiko huo.</p> <table class="browser-support"> <tr> <th class="bsChrome">Chrome</th> <th class="bsEdge">Edge</th> <th class="bsFirefox">Firefox</th> <th class="bsSafari">Safari</th> <th class="bsOpera">Opera</th> </tr> <tr> <td>Chrome</td> <td>Edge</td> <td>Firefox</td> <td>Safari</td> <td>Opera</td> </tr> <tr> <td>4.0</td> <td>9.0</td> <td>3.6</td> <td>4.0</td> <td>10.1</td> </tr> </table> <p class="note"><span>Mafanikio:</span>Internet Explorer 8 na zaidi ya zamani hawakubali viungo vya <canvas>.</p> </div> <div class="btn-toref"> <p><a href="/sw/jsref/api_canvas.html">Mwongozo wa Canvas</a></p> </div><div style="background-color:#fcfdf8; 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