摘要:本次主要理解布局中元素的幾個(gè)屬性,今天理解第一個(gè)屬性屬性翻譯成人話就是,元素按照定義的序號(hào),順序排列,序號(hào)小的在前面。數(shù)值越小,排列越靠前,默認(rèn)為。
本次主要理解flex布局中元素的幾個(gè)屬性,今天理解第一個(gè)order屬性
order屬性翻譯成人話就是,元素按照order定義的序號(hào),順序排列,序號(hào)小的在前面。
order:定義項(xiàng)目的排列順序。數(shù)值越小,排列越靠前,默認(rèn)為0。
https://developer.mozilla.org...
In the live example below I have added a focus style in order that as you tab from link to link you can see which is highlighted. If you change the order using flex-direction you can see how the tab order continues to follow the order that the items are listed in the source.
.box { display: flex; flex-direction: row; } .box :nth-child(1) { order: 2; } .box :nth-child(2) { order: 3; } .box :nth-child(3) { order: 1; } .box :nth-child(4) { order: 3; } .box :nth-child(5) { order: 1; }
The order property is designed to lay the items out in ordinal groups. What this means is that items are assigned an integer that represents their group.
The items are then placed in the visual order according to that
integer, lowest values first.
If more than one item has the same integer value, then within that group the items are laid out as per source order.
As an example, I have 5 flex items, and assign order values as follows:
Source item 1: order: 2 Source item 2: order: 3 Source item 3: order: 1 Source item 4: order: 3 Source item 5: order: 1
These items would be displayed on the page in the following order:
Source item 3: order: 1 Source item 5: order: 1 Source item 1: order: 2 Source item 2: order: 3 Source item 4: order: 3
Items have a number showing their source order which has been rearranged.
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