简单的可重用的输入验证
很简单，如果该输入的没有输入，则弹出提示common.js:
<div style="padding-right: 5.4pt; padding-left: 5.4pt; background: #e6e6e6; padding-bottom: 4px; width: 95%; padding-top: 4px;">http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.giffunction isRequired( checked )
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gif...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif for( var i=0; i<checked.length; i++ )
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif var input = checked[0];
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif if( input.value==null || input.value.length==0 )
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockStart.gifhttp://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedSubBlock.gif ...{
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif alert( checked[1] );
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif input.focus();
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return false;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/InBlock.gif return true;
http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockEnd.gif}
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