get循环中的getElementById，其for target div id在for循环中循环。 [英] getElementById in a for loop whose target div id is being looped in that for loop.
问题描述
您好！感谢先阅读我的问题！
我有很多带数字ID的div，例如< div
id =" 999">。 ..< / div>，< div id =" 1000"> ...< / div>
我希望做这样的事情，
for（var i = startvalue; i< = endvalue; i ++）{
document.getElementById（i）.style.background =" yello w;" ;;
}
但在第一次更改背景后，它会停止并告诉我
document.getElementById（i ）没有属性。我相信那些
div'存在。
出了什么问题？
非常感谢！
Nik在12/15/2006 12:08 AM说了以下内容：
< blockquote class =post_quotes>
您好！感谢您先阅读我的问题！
是什么让你觉得我读到它第一次而不是第二个？
我有许多带有数字ID的div，例如< div
id =" 999" ;> ...< / div>，< div id =" 1000"> ...< / div>
我希望做类似的事情这个，
for（var i = startvalue; i< = endvalue; i ++）{
document.getElementById（i）.style.background =" yello w;" ;;
}
但是在第一次更改背景后，它停止并告诉我
文件.getElementById（i）没有属性。而且我确信那些
div'存在。
出了什么问题？
代码中的某些东西不起作用？显示一个示例页面，其中包含最小的行为示例。要么你的结束值是错误的（取决于你设置它的价格是多少？）或者id不存在。
-
Randy
机会有利于准备好的心灵
comp.lang.javascript常见问题 - http://jibbering.com/faq
Javascript最佳实践 - http://www.JavascriptToolbox.com/bestpractices/
嘿兰迪！谢谢你来救援。
不幸的是（真的！）所有div都是用我的
公司的密码从数据库中提取的。 ...但我已经尝试更改
document.getElementById（i）.style.background =''yello w;'';警告（i）;
这是有效的 - 我推动（endvalue - startvalue）时间OK我自己。
但为什么不是getElementById （i）工作，这是非常非常奇怪的对我来说，我感觉到一些真正愚蠢的东西，但是我无法弄清楚
我自己......
有什么想法吗？
Quintillion谢谢你
Randy Webb写道：
Nik在12/15/2006 12:08 AM说了以下内容：
您好！感谢您先阅读我的问题！
是什么让你觉得我读到它第一次而不是第二个？
我有许多带有数字ID的div，例如< div
id =" 999" ;> ...< / div>，< div id =" 1000"> ...< / div>
我希望做类似的事情这个，
for（var i = startvalue; i< = endvalue; i ++）{
document.getElementById（i）.style.background =" yello w;" ;;
}
但是在第一次更改背景后，它停止并告诉我
文件.getElementById（i）没有属性。而且我确信那些
div'存在。
出了什么问题？
代码中的某些东西不起作用？显示一个示例页面，其中包含最小的行为示例。要么你的结束值是错误的（取决于你设置它的价格是多少？）或者id不存在。
-
Randy
机会有利于准备好的心灵
comp.lang.javascript常见问题 - http://jibbering.com/faq
Javascript最佳实践 - http://www.JavascriptToolbox.com/bestpractices/
Nik写道：
< blockquote class =post_quotes>
您好！感谢先阅读我的问题！
我有很多带数字ID的div，例如< div
id =" 999">。 ..< / div>，< div id =" 1000"> ...< / div>
对于有效的HTML，id属性的值不能以
数字开头，尽管它可以包含数字。
>
我希望做这样的事情，
for（var i = startvalue ; i< = endvalue; i ++）{
document.getElementById（i）.style.background =" yello w;" ;;
}
但在第一次更改背景后，它会停止并告诉我
document.getElementById（i）没有属性。而且我确信那些
div'存在。
出了什么问题？
谁知道？您发布的代码应该有效。要修复无效的ID，
只需在值前添加一个或多个字母，例如：
< script type =" text / javascript"> ;
函数foo（startvalue，endvalue）{
for（var i = startvalue; i< = endvalue; i ++）{
document.getElementById（''x''+ i）.style.background =" yellow;" ;;
}
}
< / script>
< input type =" button" value =" call foo（1,2）" onclick =" foo（1,2）;">
< div id =" x0"> x0< / div>
< div id =" x1"> x1< / div>
< div id =" x2"> x2< / div>
< div id = " x3"> x3< / div>
-
Rob
Hello! Thanks for reading my question first!
I have many divs with an numeral id ,for example <div
id="999">...</div>, <div id="1000">...</div>
and I wish to do something like this,
for( var i = startvalue; i<=endvalue; i++){
document.getElementById(i).style.background="yello w;";
}
but after the first changing background, it stops and tell me that the
document.getElementById(i) has no properties. And I am sure that those
div''s exist.
What''s going wrong?
Thanks So Much!
Nik said the following on 12/15/2006 12:08 AM:Hello! Thanks for reading my question first!What makes you think I read it "first" and not "second"?
I have many divs with an numeral id ,for example <div
id="999">...</div>, <div id="1000">...</div>
and I wish to do something like this,
for( var i = startvalue; i<=endvalue; i++){
document.getElementById(i).style.background="yello w;";
}
but after the first changing background, it stops and tell me that the
document.getElementById(i) has no properties. And I am sure that those
div''s exist.
What''s going wrong?Something in your code isn''t working? Show a sample page with a minimal
example of the behavior. Either your endvalue is wrong (depending on how
you set it) or the id doesn''t exist.
--
Randy
Chance Favors The Prepared Mind
comp.lang.javascript FAQ - http://jibbering.com/faq
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/
Hey Randy! Thanks for coming to rescue.
Unfortunately(really!) All the div''s are pulled from a database with my
company''s password.... BUT I have tried changing the
document.getElementById(i).style.background=''yello w;''; to alert(i);
And that works - I pushed (endvalue - startvalue) times of OK myself.
But why doesn''t the getElementById(i) work, this is very, very strange
to me, I am sensing something real stupid, but I cannot figure that out
myself...
any thoughts?
Quintillion Thank You''s
Randy Webb wrote:Nik said the following on 12/15/2006 12:08 AM:Hello! Thanks for reading my question first!
What makes you think I read it "first" and not "second"?
I have many divs with an numeral id ,for example <div
id="999">...</div>, <div id="1000">...</div>
and I wish to do something like this,
for( var i = startvalue; i<=endvalue; i++){
document.getElementById(i).style.background="yello w;";
}
but after the first changing background, it stops and tell me that the
document.getElementById(i) has no properties. And I am sure that those
div''s exist.
What''s going wrong?
Something in your code isn''t working? Show a sample page with a minimal
example of the behavior. Either your endvalue is wrong (depending on how
you set it) or the id doesn''t exist.
--
Randy
Chance Favors The Prepared Mind
comp.lang.javascript FAQ - http://jibbering.com/faq
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/
Nik wrote:Hello! Thanks for reading my question first!
I have many divs with an numeral id ,for example <div
id="999">...</div>, <div id="1000">...</div>For valid HTML, the value of the id attribute must not start with a
digit, though it can contain digits.
>
and I wish to do something like this,
for( var i = startvalue; i<=endvalue; i++){
document.getElementById(i).style.background="yello w;";
}
but after the first changing background, it stops and tell me that the
document.getElementById(i) has no properties. And I am sure that those
div''s exist.
What''s going wrong?Who knows? Your code as posted should work. To fix the invalid ids,
just prefix the values with one or more letters, e.g.:
<script type="text/javascript">
function foo(startvalue, endvalue){
for( var i=startvalue; i<=endvalue; i++){
document.getElementById(''x'' + i).style.background="yellow;";
}
}
</script>
<input type="button" value="call foo(1,2)" onclick="foo(1,2);">
<div id="x0">x0</div>
<div id="x1">x1</div>
<div id="x2">x2</div>
<div id="x3">x3</div>
--
Rob
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