js计算hashcode

2024-09-02 02:29:42

String.prototype.hashCode = function(){

    var hash = 0;

    for (var i = 0; i < this.length; i++) {

        var character = this.charCodeAt(i);

        hash = ((hash<<5)-hash)+character;

        hash = hash & hash; // Convert to 32bit integer

    }

    return hash;

}

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