...charset 属性实例实例显示链接文档的字符编码:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><link id="link1" href="domoarigato.htm" charset="ISO-2022-JP"><script>function displayResul...
https://www.w3cschool.cn/jsref/prop-link-charset.html... href 属性实例实例点击一个按钮时切换样式表:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><link id="style1" rel="stylesheet" type="text/css" href="style1.css"><script>function displa...
https://www.w3cschool.cn/jsref/prop-link-href.html... hreflang 属性 实例 实例 显示链接文档的语言: <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>W3Cschool在线教程(w3cschool.cn)</title> <link id="link1" href="domoarigato.htm" hreflang="ja"> <script> function displayResult...
https://www.w3cschool.cn/jsref/prop-link-hreflang.html...com") 相对 URL - 指向网站内的一个页面(比如 cite="example.html") 技术描述 返回值: 一个字符串, 源文档的URL地址。 更多实例 实例 修改引用的 cite 属性值: document.getElementById("myQuote").cite="http://www.cnn.com/"; 尝试一下 » 相关页面 HTML ...
https://www.w3cschool.cn/jsref/prop-quote-cite.html... form 属性实例实例显示包含下拉列表的表单id:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ var x=document.getElementById("mySelect").form.id; alert(x)...
https://www.w3cschool.cn/jsref/prop-select-form.html... length 属性实例实例显示下拉列表的选项数目:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ alert(document.getElementById("mySelect").length);}</script...
https://www.w3cschool.cn/jsref/prop-select-length.html...ltiple 属性实例实例在下拉选项中选取多个选项:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ document.getElementById("mySelect").multiple=true;}</scri...
https://www.w3cschool.cn/jsref/prop-select-multiple.html...实例实例下面的例子可提示下拉列表的名称:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ alert(document.getElementById("mySelect").name);}</script>...
https://www.w3cschool.cn/jsref/prop-select-name.html...ize 属性实例实例改变下来列表选项的可见数目:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ document.getElementById("mySelect").size=4;}</script><...
https://www.w3cschool.cn/jsref/prop-select-size.html...例实例下面的例子返回下拉列表的表单类型:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ alert(document.getElementById("mySelect").type);}</script>...
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...charset 属性实例实例显示链接文档的字符编码:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><link id="link1" href="domoarigato.htm" charset="ISO-2022-JP"><script>function displayResul...
https://www.w3cschool.cn/jsref/prop-link-charset.html... href 属性实例实例点击一个按钮时切换样式表:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><link id="style1" rel="stylesheet" type="text/css" href="style1.css"><script>function displa...
https://www.w3cschool.cn/jsref/prop-link-href.html... hreflang 属性 实例 实例 显示链接文档的语言: <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>W3Cschool在线教程(w3cschool.cn)</title> <link id="link1" href="domoarigato.htm" hreflang="ja"> <script> function displayResult...
https://www.w3cschool.cn/jsref/prop-link-hreflang.html...com") 相对 URL - 指向网站内的一个页面(比如 cite="example.html") 技术描述 返回值: 一个字符串, 源文档的URL地址。 更多实例 实例 修改引用的 cite 属性值: document.getElementById("myQuote").cite="http://www.cnn.com/"; 尝试一下 » 相关页面 HTML ...
https://www.w3cschool.cn/jsref/prop-quote-cite.html... form 属性实例实例显示包含下拉列表的表单id:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ var x=document.getElementById("mySelect").form.id; alert(x)...
https://www.w3cschool.cn/jsref/prop-select-form.html... length 属性实例实例显示下拉列表的选项数目:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ alert(document.getElementById("mySelect").length);}</script...
https://www.w3cschool.cn/jsref/prop-select-length.html...ltiple 属性实例实例在下拉选项中选取多个选项:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ document.getElementById("mySelect").multiple=true;}</scri...
https://www.w3cschool.cn/jsref/prop-select-multiple.html...实例实例下面的例子可提示下拉列表的名称:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ alert(document.getElementById("mySelect").name);}</script>...
https://www.w3cschool.cn/jsref/prop-select-name.html...ize 属性实例实例改变下来列表选项的可见数目:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ document.getElementById("mySelect").size=4;}</script><...
https://www.w3cschool.cn/jsref/prop-select-size.html...例实例下面的例子返回下拉列表的表单类型:<!DOCTYPE html><html><head><meta charset="utf-8"><title>W3Cschool在线教程(w3cschool.cn)</title><script>function displayResult(){ alert(document.getElementById("mySelect").type);}</script>...
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