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- </a> </li> <li class=""> <a href="/jiaocheng/co-1055.html"> <img></a> </li> <li class=""> <a href="/jiaocheng/co-1056.html"> <input></a> </li> <li class=""> <a href="/jiaocheng/co-1057.html"> <ins></a> </li> <li class=""> <a href="/jiaocheng/co-1058.html"> <kbd></a> </li> <li class=""> <a href="/jiaocheng/co-1059.html"> <keygen></a> </li> <li class=""> <a href="/jiaocheng/co-1060.html"> <label></a> </li> <li class=""> <a href="/jiaocheng/co-1061.html"> <legend></a> </li> <li class=""> <a href="/jiaocheng/co-1062.html"> <li></a> </li> <li class=""> <a href="/jiaocheng/co-1063.html"> <link></a> </li> <li class=""> <a href="/jiaocheng/co-1064.html"><main></a> </li> <li class=""> <a href="/jiaocheng/co-1065.html"> <map></a> </li> <li class=""> <a href="/jiaocheng/co-1066.html"> <mark></a> </li> <li class=""> <a href="/jiaocheng/co-1067.html"> <menu></a> </li> <li class=""> <a href="/jiaocheng/co-1068.html"> <meta></a> </li> <li class=""> <a href="/jiaocheng/co-1069.html"> <meter></a> 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</li> <li class=""> <a href="/jiaocheng/co-1100.html"> <summary></a> </li> <li class=""> <a href="/jiaocheng/co-1101.html"> <sup></a> </li> <li class=""> <a href="/jiaocheng/co-1102.html"> <table></a> </li> <li class=""> <a href="/jiaocheng/co-1103.html"> <tbody></a> </li> <li class=""> <a href="/jiaocheng/co-1104.html"> <td></a> </li> <li class=""> <a href="/jiaocheng/co-1105.html"> <textarea></a> </li> <li class=""> <a href="/jiaocheng/co-1106.html"> <tfoot></a> </li> <li class=""> <a href="/jiaocheng/co-1107.html"> <th></a> </li> <li class=""> <a href="/jiaocheng/co-1108.html"> <thead></a> </li> <li class=""> <a href="/jiaocheng/co-1109.html"> <time></a> </li> <li class=""> <a href="/jiaocheng/co-1110.html"> <title></a> </li> <li class=""> <a href="/jiaocheng/co-1111.html"> <tr></a> </li> <li class=""> <a href="/jiaocheng/co-1112.html"> <track></a> </li> <li class=""> <a href="/jiaocheng/co-1113.html"> <tt></a> </li> <li class=""> <a href="/jiaocheng/co-1114.html"> <u></a> </li> <li class=""> <a href="/jiaocheng/co-1115.html"> <ul></a> </li> <li class=""> <a href="/jiaocheng/co-1116.html"> <var></a> </li> <li class=""> <a href="/jiaocheng/co-1117.html"> <video></a> </li> <li class=""> <a href="/jiaocheng/co-1118.html"> <wbr></a> </li> </ul> </div>  <div id='write' class='is-node'> <h1 class="border-b-none"><a name="" class="md-header-anchor"></a><span>HTML <th> width 属性</span></h1> <div class="pre-and-next"> <a href="co-4635.html">上一篇：HTML <th> valign 属性</a> <a href="co-4637.html" >下一篇：HTML <thead> align 属性 </a> </div> <div class="article-intro" id="content"><p><a href="co-1107.html"><img alt="HTML th 标签参考手册" class="navup" src="/uploadfile/up/3e/a9/18/41e5761fb9ace3ecbd611c59b218a93e.jpg"/> HTML <th> 标签</a></p><div class="example"> <h2 class="example">实例</h2> <p>带有预定义宽度的表头单元格：</p> <div class="example_code notranslate"> <table border="1" width="100%"><br/> <tr><br/> <th width="70%">Month</th><br/> <th width="30%">Savings</th><br/> </tr><br/> <tr><br/> <td>January</td><br/> <td>$100</td><br/> </tr><br/> <tr><br/> <td>February</td><br/> <td>$80</td><br/> </tr><br/> </table> </div> <br/> </div><hr/><h2>浏览器支持</h2><p><img alt="Internet Explorer" height="30" src="/uploadfile/up/4e/a4/5d/6de56157646f895dc3df5461415da44e.jpg" title="Internet Explorer" width="31"/><img alt="Firefox" height="30" src="/uploadfile/up/00/0c/91/2b336d55073fa6256944bff0e3910c00.jpg" title="Firefox" width="31"/><img alt="Opera" height="30" src="/uploadfile/up/6f/c9/2f/2fde4bf7adb5ab30bcc93bcca92fc96f.jpg" title="Opera" width="28"/><img alt="Google Chrome" height="30" src="/uploadfile/up/6a/8e/5a/cb756c591b627ba35012a37de65a8e6a.jpg" title="Google Chrome" width="31"/><img alt="Safari" height="30" src="/uploadfile/up/a1/dc/41/cb5ba57a8254753663d18a4a0a41dca1.jpg" title="Safari" width="28"/></p><p>所有主流浏览器都支持 width 属性。</p><hr/><h2>定义和用法</h2><p><span class="deprecated">HTML5 不支持 <th> width 属性。请使用 CSS 代替。</span></p><p>在 HTML 4.01 中，<th> 的 width 属性 <a href="javascript:NewWindow('/try/deprecated.htm')">已废弃</a>。</p><p>width 属性规定表头单元格的宽度。</p><p>通常，单元格占用的空间就是它显示内容需要的空间。width 属性用于为单元格设置预定义的宽度。</p><hr/><h2>兼容性注释</h2><p>在 HTML 4.01 中，<th> 的 width 属性已废弃。请使用 CSS 代替。</p><p>CSS 语法：<th style="width:100px"></p><p><a href="/runcode/run_html5/?filename=tryhtml_th_width_css" target="_blank">CSS 实例：设置表头单元格的宽度</a></p><p>在我们的 CSS 教程中，您可以找到更多有关 <a href="co-629.html">width 属性</a> 的细节。</p><hr/><h2>语法</h2><div class="code notranslate"><div> <th width="<i>pixels</i>|<i>%</i>"> </div></div><h2>属性值</h2><table class="reference notranslate"> <tbody><tr> <th width="20%">值</th> <th>描述</th> </tr> <tr> <td><i>pixels</i></td> <td>设置以像素计的宽度值（比如 width="50"）。</td> </tr> <tr> <td><i>%</i></td> <td>设置以包含元素百分比计的宽度值（比如 width="50%"）。</td> </tr> </tbody></table><hr/><a href="co-1107.html"><img alt="HTML th 标签参考手册" class="navup" src="/uploadfile/up/3e/a9/18/41e5761fb9ace3ecbd611c59b218a93e.jpg"/> HTML <th> 标签</a>其他扩展</div> <div class="pre-and-next"> <a 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