CN109101303A - Intelligent picture lazyness loading method - Google Patents
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- CN109101303A CN109101303A CN201810726417.4A CN201810726417A CN109101303A CN 109101303 A CN109101303 A CN 109101303A CN 201810726417 A CN201810726417 A CN 201810726417A CN 109101303 A CN109101303 A CN 109101303A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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Abstract
The invention discloses a kind of combination picture tailoring technique and caching technologies, can easily realize picture on-demand loading service, avoid the wasting of resources and performance loss, to improve the intelligent picture lazyness loading method that user accesses the user experience of website.The method step includes that setting server-side is supported to cut out figure according to parameter；Judge whether user needs to carry out picture resource Optimized loading according to getting parms.(1) suitable picture is loaded automatically according to the value of document.devicePixelRatio.(2) when multiple domain name, guaranteeing that same picture loads all every time by certain algorithm is to cooperate image cache technology directly to take from local cache when the same picture of second of load may be implemented on fixed domain.
Description
Technical field
The present invention relates to computer communication technology field more particularly to a kind of picture loading methods.
Background technique
As the content of web page is more and more abundant, the use of picture resource also increases therewith.This when of bring money
Source waste problem and performance issue just become more prominent.Such as: the high clear screen adaptation issues of picture；Response type picture adaptation is asked
Topic；Guarantee picture domain name distribution stable problem etc. when multiple domain name loading figure.If problem above is dealt with improperly, picture will lead to
The load of resource wastes, and then influences user experience.This programme is exactly to be born in this context, is mainly used in web and answers
The wasting of resources and performance issue when with solving multiple domain name, the load of multi-screen picture.
The place but technical solution in the prior art comes with some shortcomings:
(1) we usually use high definition picture in high definition screen in practical applications, if also using high definition in low clear screen
Screen is exactly the waste of resource, and it is how different according to screen resolution and aggravate different clarity to solve to need a scheme
Picture, guarantee user experience it is constant while avoid the wasting of resources.
(2) when doing response type webpage, if we do not do the figure that all screens of optimization processing all use 800*800px
Piece, it is evident that will lead to the waste of picture resource.
(3) web application is run under Http1.x agreement, because the resource under the same domain name of limitation of browser is simultaneously
Concurrently load is limited in 3-6, also means that if when we are only Loaded Image with 1 domain name, regardless of we have on the net
How soon, our synchronizations also can only at most load 6 figures, this when, we were usually the multiple domain names of application to guarantee to scheme
Piece concurrently loads, but the problem of therefore bringing is exactly: the load for the first time of same picture is with http://s1.test.com
Domain name load, user may once become the load of http://s2.test.com domain name in refreshing, thus will appear same
One picture is possible to the problem of being loaded by 2 domain names, and secondary load is exactly the wasting of resources from caching, because false
If we are to take piece from a fixed domain name, and this picture has and added caching every time, it is exactly straight that second of client, which is refreshed,
It connects to postpone and accesses picture, effectively avoid first resource waste.
(4) some systems can also do picture adaptation scheme now, and general thinking exists<img>different figures are added above label
The attribute of piece, <img src=" http://s1.test.com/b.gif " data-x2-src=" http: //
S1.test.com/logo@1x.png " data-x2-src=" http://s1.test.com/logo@2x.png " data-
X3-src=" http://s1.test.com/logo@3x.png " >, current screen size is then judged by js to load not
Same picture ruler.
Summary of the invention
Present invention aim to address above-mentioned shortcomings in the prior art, and it is gentle to provide a kind of combination picture tailoring technique
Technology is deposited, picture on-demand loading service can be easily realized, avoid the wasting of resources and performance loss, to improve user's access
The intelligent picture lazyness loading method of the user experience of website.
The present invention discloses a kind of intelligent picture lazyness loading method, comprising the following steps:
Server-side is arranged to support to cut out figure according to parameter；
Judge whether user needs to carry out picture resource Optimized loading according to getting parms.
Preferably, judging whether user needs the step of carrying out picture resource Optimized loading according to getting parms, into one
Step includes:
Step a, the resource tag of scanning institute progress resource optimization in need, if it is class div tag, behind will be direct
The picture that on-demand loading is come is applied to inline style；If it is img label, the picture that directly on-demand loading will be come
It is applied on the src attribute of img label；
Step b initializes default configuration, and pseudocode is as follows:
Var LazyLoad=require (' lazyload ')；
Var lazyload=new LazyLoad (' .jImg ', { domain:[' s1.test.com ', '
s2.test.com'],w:100})；
lazyload.load()；
lazyload.on(‘loading’,function(currentEle,context){})
lazyload.on(‘loaded’,function(currentEle,context){})
lazyload.on(‘error,function(currentEle,context){})
Step c, it is described specific if the picture that user specifies, which has arrived visible area, will first match whether have special parameter
Parameter refers to the value of the configuration parameter data-img-config in class div tag or img label, if there is just being matched with label
Set parameters distribution global configuration parameter；
Step d will be generated by this rule in client new after obtaining the parameter information that this picture finally to be executed
Picture address, then browser just to photo services send request；
Step e, picture servers receive request and just judge picture later and whether there is, the directly return if deposited if,
If there is no the picture for just cutting needs according to parameter；
Step f, client receives after server end response is adjusted back it may determine that whether picture loads success, if success
Picture path is just updated into label；One is done if loading failure unsuccessfully to identify, it is all to need support intelligent picture load
Label all can be there are three types of state loading: in load, loaded: load successfully, error: loading and fail, these three states
3 events are corresponded to, developer can very easily utilize this little event customized demand.
Preferably, picture create-rule is as follows in the step d:
Step I first judges the format that Image ID (value of data-img-src) defines before whether meeting, if meeting
Canonical matches Image ID (imgID, 32 HASH) and picture original size (widthxheight), size=w:width,
h:height}.It continues to go down surface current journey if cooperation is legal, if mismatching determine whether it is that a legal url is asked
It asks, if it is legal url request, just directly (class div tag is < div style=" to the picture of pressure replacement picture tag
Background-image:url (imgPath) " ...></div>, img label is<img src=" imgPath"…>), such as
Fruit, which does not meet, just to skip, and triggers error event；
Step II obtains picture HASH, then distributes corresponding domain name with algorithm, the core of algorithm is exactly to obtain in HASH
First, face number (if without any number, default be 0), then remmed respectively with first digit with 1 and 2, if
Remainder is 1 picture, just uses s1.tuya.com, uses s2.tuya.com if remainder is 2 picture；
Step III, read active user's client-side information, and window.innerWidth,
Window.innerHeight and document.devicePixelRatio are cached, and are then monitored
Window.onresize updates this 3 variables if monitoring and changing；
Step IV, incoming parameter is analyzed, window.innerWidth and lgw is compared, the relationship of xsw and w cache picture
Width；
Step V, the picture width of caching is compared whether in the original image width cached before, if width >=
Size.w just directly returns to original graph, and file suffixes is spliced if width < size.w are as follows:? w=width；
Step VI, the picture address that demand is fully met according to the unification of [domain name+Image ID+file suffixes] group, is based on
Picture address initiates to request to server end.
Preferably, the step IV, further comprises:
Picture width is cached if window.innerWidth >=1920px are as follows: width=lgw*
document.devicePixelRatio；
Picture width is cached if window.innerWidth < 768 are as follows: width=xsw*document.
devicePixelRatio；
Picture width is cached if in 768px≤window.innerWidth < 1920 are as follows: width=w*
document.devicePixelRatio。
Present invention simultaneously discloses a kind of computer equipment, including memory, processor and storage are on a memory and can be
The computer program run on processor, which is characterized in that when the processor executes described program, realize such as any of the above-described
The method.
Present invention simultaneously discloses a kind of computer readable storage mediums, are stored thereon with computer program, which is characterized in that
The program realizes method as described in any one of the above embodiments when being executed by processor.
By the above means combination picture tailoring technique and caching technology, it can easily realize that picture on-demand loading takes
Business, avoids the wasting of resources and performance loss, to improve the user experience that user accesses website.
And it can solve following technical problem:
(1) suitable picture is loaded automatically according to the value of document.devicePixelRatio.
(2) when multiple domain name, guaranteeing that same picture loads all every time by certain algorithm is the cooperation figure on fixed domain
Piece caching technology may be implemented directly to take from local cache when the same picture of second of load.
(3) exist<img>the pre-buried mark for meeting definition of label simplifies html, and reducing html redundancy (can also choose pair
Then the picture tag answered passes ginseng one group of picture of unified configuration by js will cover if there is identical configuration project on picture
The biography for covering js joins configuration).To reduce html size, accelerate page loading velocity.
(4) picture tailoring technique and caching technology are combined we can easily realizes picture on-demand loading service, avoided
The wasting of resources and performance loss, to improve the user experience that user accesses website.
Specific embodiment
The present invention is described further With reference to embodiment.
The present invention provides a kind of intelligent picture lazyness loading method, comprising the following steps:
Server-side is arranged to support to cut out figure according to parameter；
Judge whether user needs to carry out picture resource Optimized loading according to getting parms.
Preferably, judging whether user needs the step of carrying out picture resource Optimized loading according to getting parms, into one
Step includes:
Step a, the resource tag of scanning institute progress resource optimization in need, if it is class div tag, behind will be direct
The picture that on-demand loading is come is applied to inline style；If it is img label, the picture that directly on-demand loading will be come
It is applied on the src attribute of img label；
Step b initializes default configuration, and pseudocode is as follows:
Var LazyLoad=require (' lazyload ')；
Var lazyload=new LazyLoad (' .jImg ', { domain:[' s1.test.com ', '
s2.test.com'],w:100})；
lazyload.load()；
lazyload.on(‘loading’,function(currentEle,context){})
lazyload.on(‘loaded’,function(currentEle,context){})
lazyload.on(‘error,function(currentEle,context){})
Step c, it is described specific if the picture that user specifies, which has arrived visible area, will first match whether have special parameter
Parameter refers to the value of the configuration parameter data-img-config in class div tag or img label, if there is just being matched with label
Set parameters distribution global configuration parameter；
Step d will be generated by this rule in client new after obtaining the parameter information that this picture finally to be executed
Picture address, then browser just to photo services send request；
Step e, picture servers receive request and just judge picture later and whether there is, the directly return if deposited if,
If there is no the picture for just cutting needs according to parameter；
Step f, client receives after server end response is adjusted back it may determine that whether picture loads success, if success
Picture path is just updated into label；One is done if loading failure unsuccessfully to identify, it is all to need support intelligent picture load
Label all can be there are three types of state loading: in load, loaded: load successfully, error: loading and fail, these three states
3 events are corresponded to, developer can very easily utilize this little event customized demand.
Preferably, picture create-rule is as follows in the step d:
Step I first judges the format that Image ID (value of data-img-src) defines before whether meeting, if meeting
Canonical matches Image ID (imgID, 32 HASH) and picture original size (widthxheight), size=w:width,
h:height}.It continues to go down surface current journey if cooperation is legal, if mismatching determine whether it is that a legal url is asked
It asks, if it is legal url request, just directly (class div tag is < div style=" to the picture of pressure replacement picture tag
Background-image:url (imgPath) " ...></div>, img label is<img src=" imgPath"…>), such as
Fruit, which does not meet, just to skip, and triggers error event；
Step II obtains picture HASH, then distributes corresponding domain name with algorithm, the core of algorithm is exactly to obtain in HASH
First, face number (if without any number, default be 0), then remmed respectively with first digit with 1 and 2, if
Remainder is 1 picture, just uses s1.tuya.com, uses s2.tuya.com if remainder is 2 picture；
Step III, read active user's client-side information, and window.innerWidth,
Window.innerHeight and document.devicePixelRatio are cached, and are then monitored
Window.onresize updates this 3 variables if monitoring and changing；
Step IV, incoming parameter is analyzed, window.innerWidth and lgw is compared, the relationship of xsw and w cache picture
Width；
Step V, the picture width of caching is compared whether in the original image width cached before, if width >=
Size.w just directly returns to original graph, and file suffixes is spliced if width < size.w are as follows:? w=width；
Step VI, the picture address that demand is fully met according to the unification of [domain name+Image ID+file suffixes] group, is based on
Picture address initiates to request to server end.
Preferably, the step IV, further comprises:
Picture width is cached if window.innerWidth >=1920px are as follows: width=lgw*
document.devicePixelRatio；
Picture width is cached if window.innerWidth < 768 are as follows: width=xsw*document.
devicePixelRatio；
Picture width is cached if in 768px≤window.innerWidth < 1920 are as follows: width=w*
document.devicePixelRatio。
By the above means combination picture tailoring technique and caching technology, we can easily realize picture on-demand loading
Service, avoids the wasting of resources and performance loss, to improve the user experience that user accesses website.
And it can solve following technical problem:
(1) suitable picture is loaded automatically according to the value of document.devicePixelRatio.
(2) when multiple domain name, guaranteeing that same picture loads all every time by certain algorithm is the cooperation figure on fixed domain
Piece caching technology may be implemented directly to take from local cache when the same picture of second of load.
(3) exist<img>the pre-buried mark for meeting definition of label simplifies html, and reducing html redundancy (can also choose pair
Then the picture tag answered passes ginseng one group of picture of unified configuration by js will cover if there is identical configuration project on picture
The biography for covering js joins configuration).To reduce html size, accelerate page loading velocity.
(4) section combination picture tailoring technique and caching technology we can easily realize picture on-demand loading service, keep away
Exempt from the wasting of resources and performance loss, to improve the user experience that user accesses website.
Assuming that one screen of user, which can see picture, 20, the original size of the size of every picture is 1000*
1000px, is 200KB, and design basis size is 300*300px.
1. if this system is shown in 2 times of high definition screens, originally for user experience it is desirable that 2 times of screens use 600*
600px (150KB) figure, 1 times of screen directly use 600* if we do not do any optimization with the figure of 300*300px (100KB)
600px figure is unified to be adapted to all client screen sizes.It is high clear screen that we, which have 50 users, at this time, and 50 users are low clear screens
Curtain, it is meant that, the flow that we waste (150-100) * 50KB is not said, also allow the load of low resolution to become slow, from
And affect user experience.
2. if we are in response to formula system.We wished lg 600*600px (150KB), xs 300* originally
300px(100KB).If we do not do any optimization, all using the figure of 600*600px specification.We have 50 use at this time
Family is lg mode access, and 50 users are xs mode access, it is meant that, we waste the flow of (150-100) * 50KB.
If we enable multiple domain, name is concurrent.2 concurrent domain name s1.test.com and s2.test.com are enabled, and
Picture enables caching, and desirably s1.test.com and s2.test.com was respectively assigned to 50 pictures originally.If we
If being not processed, it is 100*200KB that user has loaded picture to need the flow used for the first time, has loaded picture for the second time then
It may need flow 0*200KB to 100*200KB, number of request 0 to 100 time；If doing concurrent domain name algorithm process,
For the first time or 100*200KB, flow 0KB is needed for the second time, number of request 0 time.
Claims (6)
1. a kind of intelligence picture lazyness loading method, which comprises the following steps:
Server-side is arranged to support to cut out figure according to parameter；
Judge whether user needs to carry out picture resource Optimized loading according to getting parms.
2. intelligence picture lazyness loading method according to claim 1, which is characterized in that judge that user is according to getting parms
It is no to need the step of carrying out picture resource Optimized loading, further comprise:
Step a, the resource tag of scanning institute progress resource optimization in need, if it is class div tag, behind will be directly pressing
The picture that need to be loaded is applied to inline style；If it is img label, the picture application that directly on-demand loading will be come
Onto the src attribute of img label；
Step b initializes default configuration, and pseudocode is as follows:
Var LazyLoad=require (' lazyload ')；
Var lazyload=new LazyLoad (' .jImg ', { domain:[' s1.test.com ', ' s2.test.com '],
w:100})；
lazyload.load()；
lazyload.on(‘loading’,function(currentEle,context){})
lazyload.on(‘loaded’,function(currentEle,context){})
lazyload.on(‘error,function(currentEle,context){})
Step c, if the picture that user specifies, which has arrived visible area, will first match whether have special parameter, the special parameter
The value for referring to the configuration parameter data-img-config in class div tag or img label is joined if there is just being configured with label
Number covering global configuration parameter；
Step d will generate new figure in client by this rule after obtaining the parameter information that this picture finally to be executed
Piece address, then browser just sends to photo services and requests；
Step e, picture servers receive request and just judge picture later and whether there is, the directly return if deposited if, if
There is no the picture needed is just cut according to parameter；
Step f, client receives after server end response readjustment it may determine that whether picture loads success, past if success
Picture path is updated in label；It does one if loading failure unsuccessfully to identify, all marks for needing support intelligent picture load
Label all can be there are three types of state loading: in load, loaded: load successfully, error: load failure, these three states are corresponding
3 events, developer can very easily utilize this little event customized demand.
3. intelligence picture lazyness loading method according to claim 1, which is characterized in that in the step d, picture generates rule
It is then as follows:
Step I first judges the format that Image ID (value of data-img-src) defines before whether meeting, if met with regard to canonical
Match Image ID (imgID, 32 HASH) and picture original size (widthxheight), size=w:width, h:
height}.It continues to go down surface current journey if cooperation is legal, determines whether it is a legal url request if mismatched,
If it is legal url request, just directly (class div tag is < div style=" to the picture of pressure replacement picture tag
Background-image:url (imgPath) " ...></div>, img label is<img src="imgPath"…>), if
It does not meet and just skips, and trigger error event；
Step II obtains picture HASH, then distributes corresponding domain name with algorithm, and the core of algorithm is exactly to obtain inside HASH the
One number is (if default is 0), then to be remmed respectively with first digit with 1 and 2, if remainder without any number
It is 1 picture, just uses s1.tuya.com, use s2.tuya.com if remainder is 2 picture；
Step III, read active user's client-side information, and window.innerWidth, window.innerHeight and
Document.devicePixelRatio is cached, and then monitors window.onresize, if monitoring and changing more
This new 3 variables；
Step IV, incoming parameter is analyzed, window.innerWidth and lgw is compared, the relationship of xsw and w cache picture width；
Step V, the picture width of caching is compared whether in the original image width cached before, if width >=
Size.w just directly returns to original graph, and file suffixes is spliced if width < size.w are as follows:? w=width；
Step VI, the picture address that demand is fully met according to the unification of [domain name+Image ID+file suffixes] group, is based on picture
It initiates to request to server end in address.
4. intelligence picture lazyness loading method according to claim 1, which is characterized in that the step IV further comprises:
Picture width is cached if window.innerWidth >=1920px are as follows: width=lgw*
document.devicePixelRatio；
Picture width is cached if window.innerWidth < 768 are as follows: width=xsw*
document.devicePixelRatio；
Picture width is cached if in 768px≤window.innerWidth < 1920 are as follows: width=w*
document.devicePixelRatio。
5. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that when the processor executes described program, realize as of any of claims 1-4
Method.
6. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
Such as method of any of claims 1-4 is realized when row.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111475245A (en) * | 2020-04-08 | 2020-07-31 | 腾讯科技（深圳）有限公司 | Dynamic picture display method and device, electronic equipment and computer storage medium |
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