xpath中的字符串

Question

我有一個字符串，我想用它作爲xpath中的選擇器來選擇名稱作爲字符串值的節點。

declare variable $get_count := <count><comedy>1</comedy></count>; 
(: $string = "comedy" :) 
let $value = $get_count/$string (: but this doesn't return anything) 

我該怎麼做？

Answer 1

let $value = $get_count/$string (: but this doesn't return anything) 

使用：

declare variable $get_count := <count><comedy>1</comedy></count>; 
declare variable $string := "comedy"; 

let $value := $get_count/*[name()=$string] 
    return 
    $value 

當這對任何XML文檔（未使用），則希望，正確的結果產生應用：

<comedy>1</comedy>