var arr = [0,1,2,3,4,5,6];
    for(var i = 0; i < 7; i++){
        arr.sort(function(){
            return Math.random() - 0.5;
        });
    }
       alert(arr);

------解决方案--------------------
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JScript code
    var arr = [0,1,2,3,4,5,6];
    for(var i = 0; i < 7; i++){
        arr.sort(function(){
            return Math.random() - 0.5;
        });
    }
       alert(arr);