当高度为自动时，jQuery OuterHeight/Height 返回错误的高度值

Question

当 CSS 高度设置为 Auto 时，如何获取充满文本的 div 对象的完整高度？

我尝试了 OuterHeight，它仍然不是 div 对象的完整高度。

JSFiddle:https://jsfiddle.net/zerolfc/jg8s5oq3/3/

jQuery:

$('div').find('*').each(function(ti,tv){
var c = parseInt( $(tv).css('font-size') ) / 2;
c = Math.floor( c );
c = ( c < 8 ? 8 : c );
$(tv).css('font-size', c + 'px');
});

console.log($('div').outerHeight(true));

CSS:

div { display: block; width: 640px; height: auto; }
p { font-size: 24px; }

HTML:

<div>
<p>This is a textbox that you can add text to suit your design and alter.This is a textbox that you can add text to suit your design and alter.</p>
<p>This is a textbox that you can add text to suit your design and alter.This is a textbox that you can add text to suit your design and alter.</p>
<p>This is a textbox that you can add text to suit your design and alter.This is a textbox that you can add text to suit your design and alter.</p>
<p>This is a textbox that you can add text to suit your design and alter.This is a textbox that you can add text to suit your design and alter.</p><p>This is a textbox that you can add text to suit your design and alter.This is a textbox that you can add text to suit your design and alter.</p><p>This is a textbox that you can add text to suit your design and alter.This is a textbox that you can add text to suit your design and alter.</p>
</div>

Answer 1

为我返回正确的值。

来自 http://api.jquery.com/outerheight/

$('div').outerHeight(true) = [height of the $('div') + margin of $('div')]

但是根据您当前的 css 规则，您的 $('div') 元素没有任何边距。

也就是说，$('div').outerHeight(true) 将向您返回 $('div') 的实际高度，没有任何边距。

在您的情况下，以下所有 3 个值都将相同。

• $('div').outerHeight(true)
• $('div').outerHeight()
• $('div').css('height')