javascript中获得HashCode值

直接使用这三个方法即可：



function hashCode(strKey)
{
    var hash = 0;
    if(!isNull(strKey))
    {
        for (var i = 0; i < strKey.length; i++)
        {
            hash = hash * 31 + strKey.charCodeAt(i);
            hash = intValue(hash);
        }
    }
    return hash;
}


function isNull(str){

 return str == null || str.value == "";

 } 


function intValue(num)
{
    var MAX_VALUE = 0x7fffffff;
    var MIN_VALUE = -0x80000000;
    if(num > MAX_VALUE || num < MIN_VALUE)
    {
        return num &= 0xFFFFFFFF;
    }
    return num;
}