代码拉取完成，页面将自动刷新
Skel is a lightweight framework for building responsive sites and web apps. Features include:
if (skel.breakpoint("small").active) { /* do something specific for small displays */ }).load, ready) and special ones just for breakpoints (+breakpoint, -breakpoint).Load skel.min.js (either in your <head> tag or before </body> -- doesn't matter) to create the global skel object:
<script src="skel.min.js"></script>
Then use skel.breakpoints() to define your breakpoints (each consisting of a name and a media query):
skel.breakpoints({
xlarge: "(max-width: 1680px)",
large: "(max-width: 1280px)",
medium: "(max-width: 980px)",
small: "(max-width: 736px)",
xsmall: "(max-width: 480px)"
});
That's pretty much it. You can now do stuff like:
skel
.on("ready", function() {
/* do DOM ready stuff */
if (skel.breakpoint("small").active) {
/* do something specific for small displays */
}
if (skel.vars.touch) {
/* enable feature for devices with a touchscreen */
}
if (skel.vars.IEVersion < 9) {
/* apply workaround for IE<9 */
}
})
.on("+large", function() {
/* do something when "large" breakpoint becomes active */
})
.on("-large !large", function() {
/* do something when "large" breakpoint is (or becomes) inactive */
});
Skel's primary feature is its ability to make CSS breakpoints accessible via JS. To set this up, simply call skel.breakpoints() with a list of media queries (presumably mirroring those found in your CSS) in the following format:
skel.breakpoints({
name: "media query",
name: "media query",
name: "media query",
...
});
Where name is a unique identifier for each breakpoint (eg. medium). For example, the following defines 5 breakpoints (xlarge, large, medium, small, and xsmall):
skel.breakpoints({
xlarge: "(max-width: 1680px)",
large: "(max-width: 1280px)",
medium: "(max-width: 980px)",
small: "(max-width: 736px)",
xsmall: "(max-width: 480px)"
});
With these in place, individual breakpoint objects can be retrieved using skel.breakpoint(), for example:
// Get the "small" breakpoint object.
var x = skel.breakpoint("small");
Breakpoint objects have the following properties:
active
(bool) Set to true if the breakpoint is currently active (ie. the current state of the viewport satisfies its media query), or false if not.
wasActive
(bool) Set to true if the breakpoint was active before the last state change, or false if not.
name
(string) The breakpoint's name.
media
(string) The breakpoint's media query.
Skel provides a small set of common and breakpoint-oriented events. Handlers can be bound to these events using skel.on(), like so:
skel.on("event", function() {
/* do stuff */
});
You can also bind a single handler to multiple events by providing them in a space-delimited list:
skel.on("event1 event2 ...", function() {
/* do stuff */
});
The following events are currently supported:
change
Triggered when one or more breakpoints become active or inactive.
skel.on("change", function() {
alert("Breakpoints changed!");
});
init
Triggered when Skel initializes.
skel.on("init", function() {
alert("Initialized!");
});
ready
Triggered when the DOM is ready.
skel.on("ready", function() {
alert("DOM is ready!");
});
load
Triggered when the page loads.
skel.on("load", function() {
alert("Page has finished loading!");
});
+breakpointName
Triggered when breakpointName becomes active. For example:
skel.on("+small", function() {
/* Turn on feature for small displays */
});
-breakpointName
Triggered when breakpointName becomes inactive. For example:
skel.on("-small", function() {
/* Turn off feature for small displays */
});
!breakpointName
Triggered if breakpointName is not active at the exact moment you call skel.breakpoints(). For example:
skel.on("!small", function() {
/* Turn on feature for non-small displays */
});
Skel exposes basic information about the client (such as its browser and operating system) through the skel.vars property. For example:
alert("Your browser is " + skel.vars.browser);
This information can, among other things, be used to apply browser (and even operating system) specific workarounds for those rare but frustratingly annoying moments where feature detection fails. The following vars are currently available:
browser
(string) Client's browser, which can be any of the following:
| Browser | Value of browser |
|---|---|
| Firefox | firefox |
| Chrome | chrome |
| Safari | safari |
| Opera | opera |
| Internet Explorer | ie |
| Edge | edge |
| BlackBerry | bb |
| Other | other |
browserVersion
(float) Client's browser version.
IEVersion
(float) If the client is using any version of IE, this will be set to its version number (eg. 8 for IE8, 11 for IE11). However, if they're using anything other than IE, this will be set to 99, effectively reducing legacy IE checks to a single condition. For example:
if (skel.vars.IEVersion < 9) {
/* This will only execute if the client's using IE AND its version is <9 */
}
os
(string) Client's operating system, which can be any of the following:
| Operating System | Value of os |
|---|---|
| Android | android |
| iOS | ios |
| Windows Phone | wp |
| Mac OS X | mac |
| Windows | windows |
| BlackBerry | bb |
| Other | other |
osVersion
(float) Client's operating system version.
touch
(bool) Set to true if the client is using a device with a touchscreen, or false if not.
Note: A value of true does not imply the abscence of a mouse and keyboard.
mobile
(bool) Set to true if the client is using what's considered a "mobile OS" (currently iOS, Android, Windows Phone, and BlackBerry), or false if not. Equivalent to:
(skel.vars.os == "wp" || skel.vars.os == "android" || skel.vars.os == "ios" || skel.vars.os == "bb")
stateId
(string) Current state ID. A state, in Skel terms, is a specific combination of active breakpoints, and a state ID is the unique identifier used to reference that state internally. For example, given the breakpoints medium, small, and xsmall (defined in that exact order):
| Active Breakpoints | Value of stateId |
|---|---|
medium |
/medium |
small |
/small |
small and xsmall |
/small/xsmall |
| (none) | / |
While stateId is primarily meant for Skel's own internal use, it can come in handy elsewhere (eg. to perform an action when a very specific combination of breakpoints is active).
lastStateId
(string) The value of stateId before the last state change, or null if the state hasn't changed yet.
Skel is released under the MIT license.
Copyright (c) skel.io
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
此处可能存在不合适展示的内容，页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容，可点击提交进行申诉，我们将尽快为您处理。
马建仓 AI 助手