問(wèn)題描述
我在瀏覽一個(gè)網(wǎng)站的源代碼時(shí)，發(fā)現(xiàn)了這段代碼.
I was going through the source code of a website and found this piece of code.
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=1.0, minimum-scale=1.0, maximum-scale=1.0">
我想知道這個(gè)初始比例、用戶(hù)可縮放、最小比例、最大比例是什么，這些值是什么意思?并告訴我他們接受的所有價(jià)值觀.
I want to know what this initial scale, user-scalable, minimum-scale, maximum-scale are and what does those values mean? And also tell me what all values they accepts.
推薦答案
它們是視口元標(biāo)記，最適用于移動(dòng)瀏覽器.
They are viewport meta tags, and is most applicable on mobile browsers.
這意味著，我們告訴瀏覽器我的網(wǎng)站適應(yīng)您的設(shè)備寬度".
This means, we are telling to the browser "my website adapts to your device width".
這定義了網(wǎng)站的縮放比例，這個(gè)參數(shù)設(shè)置了初始縮放級(jí)別，這意味著1 CSS pixel等于1 viewport pixel.當(dāng)您更改方向或阻止默認(rèn)縮放時(shí)，此參數(shù)會(huì)有所幫助.沒(méi)有這個(gè)參數(shù)，響應(yīng)式網(wǎng)站將無(wú)法工作.
This defines the scale of the website, This parameter sets the initial zoom level, which means 1 CSS pixel is equal to 1 viewport pixel. This parameter help when you're changing orientation, or preventing default zooming. Without this parameter, responsive site won't work.
Maximum-scale 定義最大縮放.當(dāng)您訪(fǎng)問(wèn)網(wǎng)站時(shí)，最高優(yōu)先級(jí)是maximum-scale=1，并且不允許用戶(hù)縮放.
Maximum-scale defines the maximum zoom. When you access the website, top priority is maximum-scale=1, and it won’t allow the user to zoom.
Minimum-scale 定義最小縮放.這與上面的工作方式相同，但它定義了最小比例.這很有用，當(dāng) maximum-scale 很大，并且您想設(shè)置 minimum-scale.
Minimum-scale defines the minimum zoom. This works the same as above, but it defines the minimum scale. This is useful, when maximum-scale is large, and you want to set minimum-scale.
用戶(hù)可縮放分配給 1.0 表示網(wǎng)站允許用戶(hù)放大或縮小.
User-scalable assigned to 1.0 means the website is allowing the user to zoom in or zoom out.
但是如果你把它分配給user-scalable=no，這意味著網(wǎng)站不允許用戶(hù)放大或縮小.
But if you assign it to user-scalable=no, it means the website is not allowing the user to zoom in or zoom out.
這篇關(guān)于什么是元標(biāo)記中的初始比例、用戶(hù)可縮放、最小比例、最大比例屬性?的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！