Thymeleaf: How to use boolean operator in JavaScri

问题:

I am using thymeleaf, in javascript using th:inline="javascript", but when we add Boolean conditions in java script thymeleaf thow an exception as below:

org.xml.sax.SAXParseException; lineNumber: 14; columnNumber: 22; The entity name must immediately follow the '&' in the entity reference.
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEntityReference(XMLDocumentFragmentScannerImpl.java:1845)
.............................

Below is my javascript code:

<script type="text/javascript" th:inline="javascript">
    $(document).ready(function(){
        $('.fancybox').fancybox({
            'width' :'623px',
            'maxHeight':'156px'
        });

        var catId = $("#category").val();
        if(catId != null && catId != ''){
            findSubCategories();
            /*<![CDATA[*/
                var subCatId = /*[[${searchProductDto.subCategory}]]*/
            /*]]>*/
            debugger;
            if(subCatId != null){
                $("#subCategory").val(subCatId);
            }
        }
    });
...............................

how we use & operator in thymeleaf?

回答1:

wrap the if block with <![CDATA[ block

<script type="text/javascript" th:inline="javascript">
var a =b = true;
/*<![CDATA[*/
if(a && b){
    alert('Yea');
}/*]]>*/
</script>

回答2:

Use the <!CDATA[ protection around the entire contents of the script tag.