js digital processing over a million

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    million: function(value) { //过万处理
        var num;
        if (value > 9999) { //大于9999显示x.xx万
            num = (Math.floor(value / 100) / 100) + 'W';
        } else if (value <= 9999 && value > -9999) {
            num = value
        } else if (value < -9999) { //小于-9999显示-x.xx万
            num = -(Math.floor(Math.abs(value) / 1000) / 10) + 'W'
        }
        return num;
    },