ajax hash緩衝

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hash 類比url路由

function hashdone(){       var hash;       hash=(!window.location.hash)?"#one":window.location.hash;       window.location.hash=hash;       var hashStr = location.hash.replace("#","");       switch(hash){           case "#one":               alert(hashStr)                break;           case "#second":               alert(hashStr)                break;           case "#third":               alert(hashStr)                break;         }   }   hashdone() window.onhashchange=function(){    hashdone()  }