如何检测DIV的维度变化?

我有下面的样本html，有一个DIV有100%的宽度。它包含了一些元素。在执行窗口调整大小时，内部元素可能会被重新定位，div的尺寸可能会改变。我在问是否有可能挂钩div的维度变化事件?以及如何做到这一点?我目前绑定回调函数到目标DIV上的jQuery调整大小事件，但是，没有输出控制台日志，如下所示:

<html>
<head>
    <script type="text/javascript" language="javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script>
    <script type="text/javascript" language="javascript">
            $('#test_div').bind('resize', function(){
                console.log('resized');
            });
    </script>
</head>
<body>
    <div id="test_div" style="width: 100%; min-height: 30px; border: 1px dashed pink;">
        <input type="button" value="button 1" />
        <input type="button" value="button 2" />
        <input type="button" value="button 3" />
    </div>
</body>
</html>

当前回答

唯一的窗户。onResize存在于规范中，但你总是可以利用IFrame在DIV中生成新的Window对象。

请核对这个答案。有一个新的jquery插件，它是可移植的，易于使用。您总是可以检查源代码，看看它是如何完成的。

<!-- (1) include plugin script in a page -->
<script src="/src/jquery-element-onresize.js"></script>

// (2) use the detectResizing plugin to monitor changes to the element's size:
$monitoredElement.detectResizing({ onResize: monitoredElement_onResize });

// (3) write a function to react on changes:
function monitoredElement_onResize() {    
    // logic here...
}

2014-09-10 09:45:47

其他回答

jQuery(document).ready( function($) {

function resizeMapDIVs() {

// check the parent value...

var size = $('#map').parent().width();



if( $size < 640 ) {

//  ...and decrease...

} else {

//  ..or increase  as necessary

}

}

resizeMapDIVs();

$(window).resize(resizeMapDIVs);

});

2015-10-02 22:16:58

看看这个http://benalman.com/code/projects/jquery-resize/examples/resize/

它有很多例子。尝试调整窗口大小，看看容器元素中的元素是如何调整的。

用js的例子来解释如何让它工作。看看这小提琴http://jsfiddle.net/sgsqJ/4/

在这个resize()事件中，它被绑定到具有类“test”的元素以及窗口对象在窗口对象$('.test')的resize回调中调用.resize()。

e.g.

$('#test_div').bind('resize', function(){
            console.log('resized');
});

$(window).resize(function(){
   $('#test_div').resize();
});

2011-06-27 12:29:06

我的jQuery插件在所有元素上启用了“调整大小”事件，而不仅仅是窗口。

https://github.com/dustinpoissant/ResizeTriggering

$("#myElement") .resizeTriggering().on("resize", function(e){
  // Code to handle resize
});

2016-08-11 18:11:06

您必须将resize事件绑定到窗口对象上，而不是绑定到通用html元素上。

然后你可以使用这个:

$(window).resize(function() {
    ...
});

在回调函数中，你可以检查div调用的新宽度

$('.a-selector').width();

因此，您的问题的答案是否定的，您不能将resize事件绑定到div。

2011-06-27 12:17:51

ResizeSensor.js是一个巨大库的一部分，但我把它的功能简化为:

function ResizeSensor(element, callback)
{
    let zIndex = parseInt(getComputedStyle(element));
    if(isNaN(zIndex)) { zIndex = 0; };
    zIndex--;

    let expand = document.createElement('div');
    expand.style.position = "absolute";
    expand.style.left = "0px";
    expand.style.top = "0px";
    expand.style.right = "0px";
    expand.style.bottom = "0px";
    expand.style.overflow = "hidden";
    expand.style.zIndex = zIndex;
    expand.style.visibility = "hidden";

    let expandChild = document.createElement('div');
    expandChild.style.position = "absolute";
    expandChild.style.left = "0px";
    expandChild.style.top = "0px";
    expandChild.style.width = "10000000px";
    expandChild.style.height = "10000000px";
    expand.appendChild(expandChild);

    let shrink = document.createElement('div');
    shrink.style.position = "absolute";
    shrink.style.left = "0px";
    shrink.style.top = "0px";
    shrink.style.right = "0px";
    shrink.style.bottom = "0px";
    shrink.style.overflow = "hidden";
    shrink.style.zIndex = zIndex;
    shrink.style.visibility = "hidden";

    let shrinkChild = document.createElement('div');
    shrinkChild.style.position = "absolute";
    shrinkChild.style.left = "0px";
    shrinkChild.style.top = "0px";
    shrinkChild.style.width = "200%";
    shrinkChild.style.height = "200%";
    shrink.appendChild(shrinkChild);

    element.appendChild(expand);
    element.appendChild(shrink);

    function setScroll()
    {
        expand.scrollLeft = 10000000;
        expand.scrollTop = 10000000;

        shrink.scrollLeft = 10000000;
        shrink.scrollTop = 10000000;
    };
    setScroll();

    let size = element.getBoundingClientRect();

    let currentWidth = size.width;
    let currentHeight = size.height;

    let onScroll = function()
    {
        let size = element.getBoundingClientRect();

        let newWidth = size.width;
        let newHeight = size.height;

        if(newWidth != currentWidth || newHeight != currentHeight)
        {
            currentWidth = newWidth;
            currentHeight = newHeight;

            callback();
        }

        setScroll();
    };

    expand.addEventListener('scroll', onScroll);
    shrink.addEventListener('scroll', onScroll);
};

如何使用:

let container = document.querySelector(".container");
new ResizeSensor(container, function()
{
    console.log("dimension changed:", container.clientWidth, container.clientHeight);
});

2017-12-25 05:36:20

如何检测DIV的维度变化?

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