toggleclass和addclass之间的区别 [英] difference between toggleclass and addclass

问题描述

我正在使用jquery，并尝试在选择该表行时向该表添加一个类.

I am working with jquery and attempting to add a class to a table on the selection of that table row.

我最初使用的是以下代码-

I was initially using the following code -

$(this).parents("tr").toggleClass("over", this.clicked);            

由于某种原因，这在只有某些已经分配了类的实例中无效. 在我对任何故障排除都太疯狂之前，我将其更改为以下内容-

For some reason, that wasn't working in only some instances where there was already a class assigned. Before I went too crazy with any troubleshooting, I changed it to the following -

$(this).parents("tr").addClass("over", this.clicked);           

这个新选项似乎工作正常.

This new option appears to be working fine.

我的问题是上面的一个选项是否比另一个更好.....我应该使用toggleClass而不是addClass，还是addClass足够?

My question is whether one option above is better than the other.....Should I be using toggleClass instead of addClass, or is addClass sufficient?

感谢您的任何想法.

推荐答案

addClass就是这样做，将类添加到元素中.

addClass does just that, adds the class to the element.

toggleClass会执行该操作，切换类，将其删除(如果存在)，否则将其添加，但是可以选择使用布尔值(true/false)来确定是否应添加对象(true)或已删除(错误).

toggleClass on the other hand does THAT, toggles the class, removing it if it's there, otherwise adding it, but optionally taking a boolean value (true/false) to determine if the object should be added (true) or removed (false).

toggleClass可能对您不起作用，这是预期的行为.您在addClass中传递的参数始终无效，因为它总是添加类.

toggleClass probably wasn't working for you in the instances where this.clicked was false, which is expected behavior. The argument you're passing in addClass has no effect, since it ALWAYS adds the class.

结论:

使用toggleClass切换类，使用addClass添加类.

Use toggleClass for toggling classes, use addClass for adding classes.

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