JavaScript中的XPath属性引号

here 和 here

我的职责是:

function parseXPathAttribute(original){
            let result = null;
            /* If there are no double quotes, wrap in double quotes */
            if(original.indexOf("\"")<0){
                result = "\""+original+"\"";
            }else{
                /* If there are no single quotes, wrap in single quotes */
                if(original.indexOf("'")<0){
                    result = "'"+original+"'";
                }else{ /*Otherwise, we must use concat() */
                    result = original.split("\"")
                    for (let x = 0;x<result.length;x++){
                        result[x] = result[x].replace(/"/g,"\\\"");
                        if (x>0){
                            result[x] = "\\\""+result[x];
                        }
                        result[x] = "\""+result[x]+"\"";
                    }
                    result = result.join();
                    result = "concat("+result+")";
                }

            }

            return result;
        }

“嗨”

失败输出示例:

我不明白为什么它是一个非法的表达式(假设双引号被转义),所以我不知道如何修复这个函数。