脚本宝典收集整理的这篇文章主要介绍了js实例Document 对象（4），脚本宝典觉得挺不错的，现在分享给大家，也给大家做个参考。小宝典致力于为广大程序猿（媛）提供高品质的代码服务，请大家多多光顾小站，小宝典在此谢过。
源代码
<!DOCTYPE htML> <html> <body> The full URL of this document is: <script> document.wrITe(document.URL); </script> </body> </html>
运行结果
打开输出流，向流中输入文本
源代码
<!DOCTYPE html> <html> <head> <script> function createDoc() { VAR doc=document.open("text/html","replace"); var txt="<!DOCTYPE html><html><body>Learning about the HTML DOM is fun!</body></html>"; doc.write(txt); doc.close(); } </script> </head> <body> <input type="button" value="New document" onclick="createDoc()"> </body> </html>
运行结果
write() 和 writeln()的不同
源代码
<!DOCTYPE html> <html> <body> <p>Note that write() does NOT add a new line after each statement:</p> <PRe> <script> document.write("Hello World!"); document.write("Have a nice day!"); </script> </pre> <p>Note that writeln() add a new line after each statement:</p> <pre> <script> document.writeln("Hello World!"); document.writeln("Have a nice day!"); </script> </pre> </body> </html>
运行结果
用指定的ID弹出一个元素的innerHTML
源代码
<!DOCTYPE html> <html> <head> <script> function getValue() { var x=document.getElementById(";myHeader"); alert(x.innerHTML); } </script> </head> <body> <h1 id="myHeader" onclick="getValue()">Click me!</h1> </body> </html>
运行结果
用指定的Name弹出元素的数量
源代码
<!DOCTYPE html> <html> <head> <script> function getElements() { var x=document.getElementsByName("x"); alert(x.length); } </script> </head> <body> Cats: <input name="x" type="radio" value="Cats"> Dogs: <input name="x" type="radio" value="Dogs"> <input type="button" onclick="getElements()" value="How many elements named 'x'?"> </body> </html>
运行结果
用指定的tagname弹出元素的数量
源代码
<!DOCTYPE html> <html> <head> <script> function getElements() { var x=document.getelementsbytagname("input"); alert(x.length); } </script> </head> <body> <input type="text" size="20"><br> <input type="text" size="20"><br> <input type="text" size="20"><br><br> <input type="button" onclick="getElements()" value="How many input elements?"> </body> </html>
运行结果
源代码
<!DOCTYPE html> <html> <body> The full URL of this document is: <script> document.write(document.URL); </script> </body> </html>
运行结果
打开输出流，向流中输入文本
源代码
<!DOCTYPE html> <html> <head> <script> function createDoc() { var doc=document.open("text/html","replace"); var txt="<!DOCTYPE html><html><body>Learning about the HTML DOM is fun!</body></html>"; doc.write(txt); doc.close(); } </script> </head> <body> <input type="button" value="New document" onclick="createDoc()"> </body> </html>
运行结果
write() 和 writeln()的不同
源代码
<!DOCTYPE html> <html> <body> <p>Note that write() does NOT add a new line after each statement:</p> <pre> <script> document.write("Hello World!"); document.write("Have a nice day!"); </script> </pre> <p>Note that writeln() add a new line after each statement:</p> <pre> <script> document.writeln("Hello World!"); document.writeln("Have a nice day!"); </script> </pre> </body> </html>
运行结果
用指定的ID弹出一个元素的innerHTML
源代码
<!DOCTYPE html> <html> <head> <script> function getValue() { var x=document.getElementById("myHeader"); alert(x.innerHTML); } </script> </head> <body> <h1 id="myHeader" onclick="getValue()">Click me!</h1> </body> </html>
运行结果
用指定的Name弹出元素的数量
源代码
<!DOCTYPE html> <html> <head> <script> function getElements() { var x=document.getElementsByName("x"); alert(x.length); } </script> </head> <body> Cats: <input name="x" type="radio" value="Cats"> Dogs: <input name="x" type="radio" value="Dogs"> <input type="button" onclick="getElements()" value="How many elements named 'x'?"> </body> </html>
运行结果
用指定的tagname弹出元素的数量
源代码
<!DOCTYPE html> <html> <head> <script> function getElements() { var x=document.getElementsByTagName("input"); alert(x.length); } </script> </head> <body> <input type="text" size="20"><br> <input type="text" size="20"><br> <input type="text" size="20"><br><br> <input type="button" onclick="getElements()" value="How many input elements?"> </body> </html>
运行结果
觉得可用，就经常来吧！Javascript技巧 脚本宝典 欢迎评论哦！ js技巧，巧夺天工，精雕玉琢。小宝典献丑了！
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