javascript JQuery 将此传递给函数
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/9230057/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
JQuery pass this to function
提问by Jonathan Eckman
I need to send thisto the capIn() and capOut() functions so that I can target the children divs of the correct .slide. How do I pass thisto a function. thiswould be what is hovered.
我需要发送this到 capIn() 和 capOut() 函数，以便我可以定位正确 .slide 的子 div。我如何传递this给一个函数。this将是什么悬停。
$(".slide").hover(function(){capIn();capOut();});
回答by ShankarSangoli
Looking at the function names capInand capOutit makes sense that they are 2 different behaviors. I believe you have 2 different behaviors on mouseenterand mouseleaveevents. hovermethod can take 2 methods, one for mouseenterand another for mouseleave. You can try this
纵观函数名capIn和capOut它是有道理的，他们是2点不同的行为。我相信您对mouseenter和mouseleave事件有两种不同的行为。hover方法可以采用 2 种方法，一种是 for mouseenter，另一种是 for mouseleave。你可以试试这个
$(".slide").hover(capIn, capOut);
You can use thisinside capInand capOutit will point to .slideelement which you hovered on.
您可以使用thisinside capIn，capOut它将指向.slide您悬停在其上的元素。
function capIn(){
var $childrens = $(this).children();
}
function capOut(){
var $childrens = $(this).children();
}
回答by dgilland
$(".slide").hover(function(){
capIn.apply(this);
capOut.apply(this);
});
See here: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/apply
请参阅此处：https: //developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/apply
UPDATE:
更新：
If capInis for mouseenterand capOutis for mouseleave, then:
如果capIn是mouseenter并且capOut是mouseleave，那么：
$(".slide").hover(function(){
capIn.apply(this);
}, function(){
capOut.apply(this);
});
ShankarSangoli's solution is more succinct, but if any arguments need to be passed in addition to this, then: capIn.apply(this, arguments)can be used.
ShankarSangoli的解决方案更简洁，但如果除 之外还需要传递任何参数this，则capIn.apply(this, arguments)可以使用：。
回答by pete
This works for me:
这对我有用：
function capOut(jq) {
alert(jq.hasClass('slide'))
}
$(".slide").hover(function () {
capIn(this),
capOut($(this)) //to pass a jQuery object wrapping 'this'
});
