<script>

var array = new Array(1,2,5,1,4,4,2,3,5,1,1,5,5,5,6,7,3,9,9,10);

var arr = new Array();

var test = new Array();

var num = 1;

var temp = "";

var size = array.length;

for(var i=0;i<size; i++){

    for(var j=i+1;j<size; j++){

        if(array[i] == array[j]){

            array.splice(j,1)

            size--;

            j--;

            num ++;

        }

    }

    test[i] = num ;

    num = 1;

    arr[i] = array[i]

}

for(var i=0;i<size; i++){

    document.write("----------------------元素："+arr[i]+"个数为："+test[i]+"<br>");

}

</script>