字符串到Javascript / Jquery中的唯一哈希

Question

Javascript / Jquery中是否有一個函數可以從字符串中生成hashtag？ 我正在尋找幾分鍾的答案，我找不到它：/也許有其他方法可以做到這一點？ 我有Symfony 2.4應用程序。

我將表單數據序列化為字符串，例如：

"cloud_adm_dictionary_type%5Bitems%5D%5B0%5D%5BdictName%5D=Otwartabbb&cloud_adm_dictionary_type%5Bitems%5D%5B0%5D%5BdictValue1%5D=fa-comments-o+text-muted&cloud_adm_dictionary_type%5Bitems%5D%5B0%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B1%5D%5BdictName%5D=Wycena&cloud_adm_dictionary_type%5Bitems%5D%5B1%5D%5BdictValue1%5D=fa-comments-o+text-muted&cloud_adm_dictionary_type%5Bitems%5D%5B1%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B2%5D%5BdictName%5D=Negocjacje&cloud_adm_dictionary_type%5Bitems%5D%5B2%5D%5BdictValue1%5D=fa-comments-o+text-muted&cloud_adm_dictionary_type%5Bitems%5D%5B2%5D%5BisDefault%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B2%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B3%5D%5BdictName%5D=Wygrana&cloud_adm_dictionary_type%5Bitems%5D%5B3%5D%5BdictValue1%5D=fa-thumbs-o-up+text-primary&cloud_adm_dictionary_type%5Bitems%5D%5B3%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B4%5D%5BdictName%5D=Przegrana&cloud_adm_dictionary_type%5Bitems%5D%5B4%5D%5BdictValue1%5D=fa-thumbs-o-down+text-danger&cloud_adm_dictionary_type%5Bitems%5D%5B4%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5B_token%5D=3PBJr_pPjHhAIB95N7PUReP5asrXsGwCILAxZLyGTUg deal:738
cloud_adm_dictionary_type%5Bitems%5D%5B0%5D%5BdictName%5D=w%C5%82asnee&cloud_adm_dictionary_type%5Bitems%5D%5B0%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B1%5D%5BdictName%5D=proklienckii&cloud_adm_dictionary_type%5Bitems%5D%5B1%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B2%5D%5BdictName%5D=telemarketing&cloud_adm_dictionary_type%5Bitems%5D%5B2%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B3%5D%5BdictName%5D=mailing&cloud_adm_dictionary_type%5Bitems%5D%5B3%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B4%5D%5BdictName%5D=www&cloud_adm_dictionary_type%5Bitems%5D%5B4%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B5%5D%5BdictName%5D=partner&cloud_adm_dictionary_type%5Bitems%5D%5B5%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B6%5D%5BdictName%5D=nowe+zrodlo&cloud_adm_dictionary_type%5Bitems%5D%5B6%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5Bitems%5D%5B7%5D%5BdictName%5D=Aaa&cloud_adm_dictionary_type%5Bitems%5D%5B7%5D%5BdictActive%5D=1&cloud_adm_dictionary_type%5B_token%5D=3PBJr_pPjHhAIB95N7PUReP5asrXsGwCILAxZLyGTUg"

我想從那里做標簽，比如我不知道'462423dfdaak542634'。 我稍后需要比較主題標簽以查看表單是否已更改。

Answer 1

在這里，您可以使用這個簡單的散列函數：

function hashCode (str){
    var hash = 0;
    if (str.length == 0) return hash;
    for (i = 0; i < str.length; i++) {
        char = str.charCodeAt(i);
        hash = ((hash<<5)-hash)+char;
        hash = hash & hash; // Convert to 32bit integer
    }
    return hash;
}

在這里查看DEMO