关于Web文本框和HTML文本框区别(RandOnly、Disabled )

作者:袖梨 2022-06-25


tagname="xwtreedropdownlist" %>




























newreadonly

readonly

disabled

asp教程:textbox

oncut="return false" text="txtnewreadonly1">





input:text

oncut="return false" value="txtnewreadonly2" />









protected void button1_click( object sender, eventargs e )
{
response.write( "asp:textbox
" );
response.write( string.format( "txtnewreadonly1: {0}
", request.form[ "txtnewreadonly1" ] ) );
response.write( string.format( "txtreadonly1: {0}
", request.form[ "txtreadonly1" ] ) );
response.write( string.format( "txtdisabled1: {0}
", request.form[ "txtdisabled1" ] ) );

response.write( "
" );

response.write( "input:text
" );
response.write( string.format( "txtnewreadonly2: {0}
", request.form[ "txtnewreadonly2" ] ) );
response.write( string.format( "txtreadonly2: {0}
", request.form[ "txtreadonly2" ] ) );
response.write( string.format( "txtdisabled2: {0}
", request.form[ "txtdisabled2" ] ) );
}


1、readonly只针对input(text/password)和textarea有效,而disabled对于所有的表单元素有效,包括select,radio,checkbox,button等。

2、在表单元素使用了disabled后,我们将表单以post或者get的方式提交的话,这个元素的值不会被传递出去,而readonly会将该值传递出去。

需要一个这样的文本框,不能手工更改内容,但js可以,也可以回传。

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