将参数传递给$(窗口).on('resize')时使用.trigger('resize')

S/O!

S / O !

I need a reliable way to detect if $(window).on('resize') has been fired by user interaction or by a jQuery .trigger call.

我需要一种可靠的方法来检测$(window).on('resize')是否被用户交互或jQuery .trigger调用触发。

I've tried the following, but I don't seem to get the parameters back in the function call:

我已经尝试过了，但是我似乎没有在函数调用中返回参数:

$(window).trigger('resize',[true]);

function prepareOnResize(e, triggered){ console.dir(triggered); }
$(window).on('resize',prepareOnResize);

Triggered seems to return the width of the screen, so I tried the following, also to no avail:

触发似乎返回屏幕的宽度，所以我尝试了以下，也没有用:

$(window).trigger('resize',[true]);

function prepareOnResize(e, width, height, triggered){ console.dir(triggered); }
$(window).on('resize',prepareOnResize);

In that instance triggered comes back undefined.

在该实例中，触发返回未定义。

I'm at a loss here -- any help would be greatly appreciated. Thanks!

我在这里损失惨重——任何帮助都将不胜感激。谢谢!

2 个解决方案

#1

jQuery puts a property isTrigger in the event object, which you can test:

jQuery在事件对象中放置一个属性isTrigger，您可以测试:

function prepareOnResize(e){ 
    if (e.isTrigger) {
        console.log('resize via jQuery trigger');
    } else {
        console.log('resize by user');
    } 
}

Alternatively you can use e.originalEvent, which jQuery only the native event object has, as mentioned here:

或者你也可以用e。原始事件，jQuery只有本地事件对象，如这里所述:

function prepareOnResize(e){ 
    if (!e.originalEvent)
        console.log('resize via jQuery trigger');
    } else {
        console.log('resize by user');
    } 
}

#2

You could try the following;

你可以试试下面的方法;

Javascript... on dom ready...

Javascript……dom准备好了…

var $window = $(window);

$window.on('resize', function(event, param1) {

  console.log("Window resized event triggered by...");

  if (typeof param1 === 'undefined') // could also do if(param1) to test for false
    console.log("System Event");
  else
    console.log("User Event");

   // Another way to check is to check the originalEvent property
   // if (e.originalEvent === undefined) alert ('triggered by code');
   // else alert ('triggered by system');

});

setTimeout(function() {
  $window.trigger("resize", ["Custom"]);
}, 2000);

This is more or less what you were trying in your code, and it will distinguish the 2 types of events.

这或多或少是您在代码中尝试的内容，它将区分这两种类型的事件。

I also made a jsFiddle so you can see: https://jsfiddle.net/sysdevcode/4w3b8e14/

我还做了一个jsFiddle，以便您可以看到:https://jsfiddle.net/sysdevcode/4w3b8e14/。

To make it work on your code

让它在你的代码上运行。

$(window).trigger('resize',[true]);

function prepareOnResize(e, width, height, triggered){ console.dir(triggered); }
$(window).on('resize',prepareOnResize);

You need to change the order of the params on the prepareOnResize() function, as $(window).trigger('resize',[true]); equates to the [true] being sent as the "width" param in your function. you wold need to do, for instance:

您需要将params的顺序更改为prepareOnResize()函数，如$(window).trigger('resize'，[true]);将[true]发送为函数中的“宽度”参数。你需要做的，例如:

var $window = $(window);
$window.trigger('resize',[ $window.width(), $window.height(), true ]);

then

然后

function prepareOnResize(e, width, height, triggered){ ... }

will work, but if you don't need to pass any params, then the e.isTrigger of the code above is probably a bit more elegent.

会起作用，但如果你不需要传递任何参数，那么e。上面代码的isTrigger可能更优雅一些。

#1