Question

如果我点击第一个输入，然后按住shift并点击第三个输入，为什么这不能全部选择3？

def main():
    while True:
        try:
            name = input("Please enter the student's name: ") #Asks for students name
            while name == "":
                print("This is invalid, please try again")
                name = input("Please enter the students name: ")


            teacher_name = input("Please enter the teacher's name: ") #Asks for teachers name 
            while teacher_name == "":
                print("This is invalid, please try again")
                teacher_name = input("Please enter the teacher's name: ")


            marker_name = input("Please enter the marker's name: ") #Asks for markers name
            while marker_name == "":
                print("This is invalid, please try again")
                marker_name = input("Please enter the marker's name: ")
            break

        except ValueError:
            print("This is invalid, please try again")


main()

Answer 1

我想我得到了你想要达到的目标......

但是由于鼠标事件与键盘事件不同，我可能会有一个想法作为替代。如果您在按住Shift键的同时mouseover复选框切换其选中状态会怎样？

就像这样：

＆＃13;

var shiftHeld = false;

// Turn the shiftHeld flag to true
$(document).on("keydown",function(e){
  if(e.shiftKey){
    shiftHeld = true;
  }
});

// Turn the shiftHeld flag to false
$(document).on("keyup",function(e){
    shiftHeld = false;
});

// On mouseover, if shifHeld is true, toggle checked state of the mouseovered checkboxes
$("input[type='checkbox'].grid-item").on("mouseover",function(){
  if(shiftHeld){
    $(this).prop("checked",!$(this).prop("checked"));
  }
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<ul>
  <li><input type="checkbox" class="grid-item">One</li>
  <li><input type="checkbox" class="grid-item">Two</li>
  <li><input type="checkbox" class="grid-item">Three</li>
</ul>

＆＃13;

Jquery Checkbox Shift单击不起作用

1 个答案: