您的位置:

如何优化CSS布局的display属性

CSS布局是Web开发中非常重要的一部分,而display属性是布局中最常用的属性之一。然而,一些错误的使用display属性会导致页面的性能下降,甚至影响用户的体验。在本文中,我们将介绍如何优化CSS布局中的display属性。

一、使用合适的display属性值

display属性有多个值,分别适用于不同的元素类型和布局需求。例如,block元素将在页面中占用一整行,而inline-block元素可与其他元素并排显示,而且还可以设置宽度和高度。不正确的display属性值可能导致元素在页面上出现错位或布局混乱。


/* 错误的例子 */
div {
  display: inline;
}

/* 正确的例子 */
div {
  display: inline-block;
}

二、避免频繁更改display属性

频繁更改元素的display属性会对页面性能产生负面影响。当一个元素的display属性值发生变化时,浏览器需要重新计算该元素的布局和渲染,从而消耗额外的时间和资源。

为了避免频繁更改display属性,可以考虑使用其他属性值,例如visibilityopacity来实现相应的效果。


/* 错误的例子 */
function toggleElement() {
  var element = document.getElementById('my-element');
  element.style.display = (element.style.display === 'none') ? 'block' : 'none';
}

/* 正确的例子 */
function toggleElement() {
  var element = document.getElementById('my-element');
  element.style.visibility = (element.style.visibility === 'hidden') ? 'visible' : 'hidden';
}

三、使用flexbox布局

如果您需要创建一个自适应的响应式布局,那么使用flexbox布局将会非常有用。Flexbox布局通过display: flex属性值,可以轻松创建复杂的布局,并且可以自动调整子元素的尺寸和位置。


/* Flexbox示例 */
.container {
  display: flex;
}

.item {
  flex: 1;
  margin: 10px;
}

四、使用grid布局

grid布局是CSS3中引入的一个新功能,可以用于创建网格式布局。与flexbox布局不同,grid布局是一个二维布局系统,允许您以列和行的方式对子元素进行布局。


/* Grid布局示例 */
.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 100px);
}

.item {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
}

五、使用display: contents

display: contents是CSS3中的一个新属性,允许您将元素的子节点的显示级别提升到与父节点同级,从而让子节点与其兄弟节点具有相同的样式。


/* display: contents 示例 */
.container {
  display: grid;
}

.header, .footer {
  display: contents;
}

.main {
  grid-column: 1 / -1;
}

六、使用display: none

display: none属性可以使元素从页面中彻底移除,从而不被用户看到或影响页面布局。如果您需要动态地添加/移除元素,那么使用display: none属性可能会更好地满足您的需求。


/* 动态添加/移除元素 */
function toggleElement() {
  var element = document.getElementById('my-element');
  element.style.display = (element.style.display === 'none') ? 'block' : 'none';
}

七、使用display: inline

最后一个建议是,尽量避免使用display: inline属性。虽然它可以使元素与文本行内排列,但它会导致元素的尺寸无法被设置,并且会影响元素之间的垂直对齐。如果您需要在文本中插入元素,请考虑使用inline-block或float属性。


/* 不要使用display: inline属性 */
a {
  display: inline;
}

/* 使用inline-block属性代替 */
a {
  display: inline-block;
}

/* 使用float属性代替 */
img {
  float: left;
}

总结

在本文中,我们介绍了如何优化CSS布局的display属性。正确使用display属性值、避免频繁更改display属性、使用flexbox和grid布局、使用display: contents和display: none属性以及避免使用display: inline属性都是优化CSS布局的有效方法。通过选择正确的属性值,并在需要时使用新的布局系统,您可以创建出更加优化和高效的布局。

如何优化CSS布局的display属性

2023-05-12
如何利用CSS的display属性提高网页布局的效率

2023-05-12
when-present<#else>when-missing. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)?? ---- ---- FTL stack trace ("~" means nesting-related): - Failed at: ${item.id} [in template "article/detail/index.ftl" at line 48, column 106] ---- Java stack trace (for programmers): ---- freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...] at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134) at freemarker.core.EvalUtil.coerceModelToTextualCommon(EvalUtil.java:481) at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:401) at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:370) at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:104) at freemarker.core.DollarVariable.accept(DollarVariable.java:63) at freemarker.core.Environment.visit(Environment.java:371) at freemarker.core.IteratorBlock$IterationContext.executedNestedContentForCollOrSeqListing(IteratorBlock.java:321) at freemarker.core.IteratorBlock$IterationContext.executeNestedContent(IteratorBlock.java:271) at freemarker.core.IteratorBlock$IterationContext.accept(IteratorBlock.java:244) at freemarker.core.Environment.visitIteratorBlock(Environment.java:645) at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:108) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:94) at freemarker.core.Environment.visit(Environment.java:335) at freemarker.core.Environment.visit(Environment.java:341) at freemarker.core.Environment.visit(Environment.java:341) at freemarker.core.Environment.process(Environment.java:314) at freemarker.template.Template.process(Template.java:383) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:332) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:266) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:220) at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:181) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:314) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1431) at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1167) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1106) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at com.software.filter.HttpSpiderIdentifyFilter.doFilter(HttpSpiderIdentifyFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at java.base/java.lang.VirtualThread.run(VirtualThread.java:309)