在 jquery 中切换和切换多个类

Question

I would like to add and switch classed when clicking on some cells,Like calendar schedule.

I tried sample code below,but it didn't switch each class.

My desired result is switching like below by clicking.

null → classA → classB → classC → null → classA →

my sample code is below

$("#our_calendar td")     
      .click(function() {  
       $(this).toggleClass('classA classB classC');
 });

I would like to change cell's color by creating it's css.

.classA {
    background-color: rgb(0,255,0);
}

.classB {
    background: linear-gradient(to bottom, yellow 49%,yellow 1%, rgb(0, 255, 0) 1%,rgb(0, 255, 0) 50%);
}

.classC {
    background: linear-gradient(to bottom, yellow 49%,yellow 1%, aqua 1%, aqua 50%);
}

If someone know this method,please let me know.

Thanks

Answer 1

You can try below logic. Create local variable of array of classes. Use data-class-index attribute for td to be clicked for getting next class.

See below code

 $(function(){ var classArray = ['classA','classB','classC']; var arrLen = classArray.length; $("#our_calendar td").click(function() { var classIndex = $(this).data('class-index'); $(this).removeClass(classArray[classIndex]); if(classIndex < (arrLen-1)) { classIndex++; } else { //reset class index classIndex = 0; } $(this).addClass(classArray[classIndex]); $(this).data('class-index',classIndex); }); });

 .classA { background-color: rgb(0,255,0); } .classB { background: linear-gradient(to bottom, yellow 49%,yellow 1%, rgb(0, 255, 0) 1%,rgb(0, 255, 0) 50%); } .classC { background: linear-gradient(to bottom, yellow 49%,yellow 1%, aqua 1%, aqua 50%); }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <table id="our_calendar"> <tr><td class="classA" data-class-index="0">Date Value 1</td></tr> <tr><td class="classA" data-class-index="0">Date Value 2</td></tr> <tr><td class="classA" data-class-index="0">Date Value 3</td></tr> </table>

Answer 2

you have to call toggle for every class. Referred from ( Toggle multiple element classes with jQuery )

 $("#our_calendar td")    
    .click(function() {  
     $(this).toggleClass("classA").toggleClass("classB").toggleClass("classC");
 });

working fiddle :

https://jsfiddle.net/mohammadyaseer/qn2m01fu/4/

Answer 3

You can modify your jQuery to something like below.

$("#our_calendar td").click(function() {
   if ($(this).hasClass("classA")) {
    $(this).toggleClass("classA classB");
  } else if ($(this).hasClass("classB")) {
    $(this).toggleClass("classB classC");
  } else if ($(this).hasClass("classC")) {
    $(this).toggleClass("classC");
  }
});

If you are looking to circulate through the classes, You can use below one

$("#our_calendar td").click(function() {
   if ($(this).hasClass("classA")) {
    $(this).toggleClass("classA classB");
  } else if ($(this).hasClass("classB")) {
    $(this).toggleClass("classB classC");
  } else if ($(this).hasClass("classC")) {
    $(this).toggleClass("classC classA");
  }
});