jQuery 添加和删除 $(window).scroll(function()?
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时间:2020-08-26 17:02:53 来源:igfitidea点击:
jQuery add and remove $(window).scroll(function()?
提问by Dee
How can I remove and then add the $(window).scroll
? I need to store a variable and reuse it after some event.
如何删除然后添加$(window).scroll
?我需要存储一个变量并在某个事件后重用它。
// here i store my var
$(window).scroll(function(){
myScroll = $(window).scrollTop()
});
$("#itemUnbind").click(function(){
// here i need to remove the listener
});
$("#itemBind").click(function(){
// here i need to add listener again
});
Thank you.
谢谢你。
回答by Andy E
You need to store the function in a variable and then use off
to remove it:
您需要将该函数存储在一个变量中,然后使用off
它来删除它:
var scrollHandler = function(){
myScroll = $(window).scrollTop();
}
$("#itemBind").click(function(){
$(window).scroll(scrollHandler);
}).click(); // .click() will execute this handler immediately
$("#itemUnbind").click(function(){
$(window).off("scroll", scrollHandler);
});