JavaScript麻烦减去变量

Question

        var times_hit = $('#timeshit').val();

        if (times_hit > -1 && times_hit < 4 && times_hit != "")
        {
           if(times_hit == 0)
           {
               start_score = start_score - parseInt(times_hit.val());;
           }

我已经尝试了以上内容。 times_hit是一个等于1的变量。

如果我要做start_score = start_score - 1它可以正常工作。

Answer 1

您已获得此行的输入值：

var times_hit = $('#timeshit').val();

删除它时，您无需再次致电.val()。它应该只是：

start_score = start_score - parseInt(times_hit, 10);

或只是

start_score = start_score - times_hit;

因为当你尝试减去它时，字符串会自动转换为数字。