A Boolean value that specifies whether sensitive HTML and XML characters should be escaped in the HTML output generated by this component. If you do not specify escape="false", the character escape sequence displays as written. Be aware that setting this value to "false" may be a security risk because it allows arbitrary content, including JavaScript, that could be used in a malicious manner.
For example, the only way to add a ">" symbol to a label is by using the symbol's character escape sequence and setting escape="false". If you do not specify escape="false", the character escape sequence displays as written.
Sample Code:
Visualforce page:
<apex:page controller="Sample">
<apex:form >
<apex:pageBlock >
<apex:pageBlockSection >
<apex:pageBlockSectionItem >Enter Text:</apex:pageBlockSectionItem>
<apex:pageBlockSectionItem ><apex:inputText value="{!str}"/></apex:pageBlockSectionItem>
</apex:pageBlockSection>
<apex:pageBlockButtons >
<apex:commandButton value="Show"/>
</apex:pageBlockButtons>
</apex:pageBlock>
<apex:pageBlock >
<apex:outputLabel escape="true" value="Escape true : {!str}"/><br/>
<apex:outputLabel escape="false" value="Escape false : {!str}"/>
</apex:pageBlock>
</apex:form>
</apex:page>
Apex Class:
For example, the only way to add a ">" symbol to a label is by using the symbol's character escape sequence and setting escape="false". If you do not specify escape="false", the character escape sequence displays as written.
Sample Code:
Visualforce page:
<apex:page controller="Sample">
<apex:form >
<apex:pageBlock >
<apex:pageBlockSection >
<apex:pageBlockSectionItem >Enter Text:</apex:pageBlockSectionItem>
<apex:pageBlockSectionItem ><apex:inputText value="{!str}"/></apex:pageBlockSectionItem>
</apex:pageBlockSection>
<apex:pageBlockButtons >
<apex:commandButton value="Show"/>
</apex:pageBlockButtons>
</apex:pageBlock>
<apex:pageBlock >
<apex:outputLabel escape="true" value="Escape true : {!str}"/><br/>
<apex:outputLabel escape="false" value="Escape false : {!str}"/>
</apex:pageBlock>
</apex:form>
</apex:page>
Apex Class: