EXT 4 source code (2)-Ext-more.js

Source code: Core/src/Ext-more.js

L 44

Will there be 44 rows? I can't help it either. The above are all comments.

There are many annotations in ext. However, these annotations are all document annotations. Few key notes.

L 45

Ext. useragent the navigator. useragent description is used here. Ext judges the browser based on navigator. useragent.

L 46

What is Ext. cache used for this cache? It is where all ext caches are stored.

L 47

Ext. idseed is called a seed. Ext uses idseed to make the ID unique. idseed ++ is used every time it is used.

L 48

Ext. blank_image_url: An empty image is particularly useful in ie6. it can take effect for the inline-block element.

As for the string following Ext. blank_image_url, it is actually the request header information sent to the server requesting this image. It contains the file information for base64 verification. (Thanks for the amendment)

L 49

Ext. isstrict

Strict mode. If you do not understand, you can view the relevant information.

L 50-51

Ext. windowid

Ext.doc umentid

L 57

The start value of Ext. isready is false. True is assigned to Ext. Ready.

L 58

Ext. enablegarbagecollector

Automatic garbage collection is allowed.

This term is advanced.

But here is only the configuration. For details, refer to the usage for further analysis.

L 59

Ext. enablelistenercollection

Same as l58

L 77-98

Ext. ID to generate a unique ID.

L 103-130

Ext. getxxx you may think that these are constants. Why not put them in members directly, for example:

Ext. Body, but use Ext. getbody ()

Because the document. Body Ken does not exist (not loaded) when the Ext-more.js is executed ).

L 139-141

Ext. getcmp get the defined component

Each component has a corresponding ID, which caches the ID to the corresponding component. This function returns components based on the ID.

L 147-148

Ext. getorientation this function is mainly used for mobile platforms.

It determines the current browser direction.

Of course, a simple but good method is used: the length <width is vertical

L 161-179

Ext. Destroy release anything

If it is Dom, it will call Dom's own release.

L 194-204

Ext. Callback

Execute a callback function in a certain scope. Of course, if the callback function is not a function, ignore it.

Ext. Defer is a method for delayed execution.

L 211-223

Ext.html encode

Ext.html decode

The real implementation is not explained here in Ext. String.

L 231-236

Ext. urlappend if there is a URL? Complete & otherwise?

L 240

It is just short. Because Ext. NS is often used

L 243

To accelerate the speed at which the browser finds the undefined, define an undefined.

L 250-279

Browser detection. If you don't understand it, you can search for other content.

L 280-283

This is mainly for IE6, so please do not make the image flash.

L 292

Ext. ssl_secure_url is a blank link, because the controls in ext are generated by JavaScript, and many nodes have the href/src attribute. Change these attributes to Ext. ssl_secure_url. Javascript :"".

However, this is a better solution:

Javascript :;

L 322

Ext. use_native_json

Whether to use native JSON.

I have to admit that the native JSON has two bad points: the attribute must use quotation marks; functions are not supported.
So this option gives the user the final choice.

L 347-370

Ext. getdom is often used.

Obtain a node by ID.

IE6 also returns the node with the name = parameter, so the last filter is used.

L 381-398

Ext. removenode

Delete a node

Delete cache at the same time.

Delete a node in IE6/7 and create a node.

It is mainly used to avoid Memory leakage.

Append the node to another parent node.

This means that the original node has been deleted.

Then the parent node uses innerhtml = ""

Delete a subnode.

Because the parent node is a DIV, you don't have to worry about memory leakage.

L 404-544

Ext. isxxx

L 560-562

Ext. Value

Returned value | Default Value

L 570-572

Ext. escapere replaces the escape.

For example, "A \ '"-> "\\'"

 
L 592-613

Ext. addbehaviors

It is a quick way to bind events

Use the CSS selector @ event to trigger the function format.

L 622-662

Ext. getscrollbarsize/getscrollbarwidth

The size of B is ignored here.

The getscrollbarsize function contains ie9 dedicated hack.

L 686-696

Ext. copyto copies the attributes of the specified attribute name to the object.

L 704-709

Ext. destroymembers

Use Ext. Destroy to release members

L 730-831

Ext. Log outputs a log.

L 857-863

Ext. Partition separates members that meet one condition in the array from others.

L 878-889

Ext. Invoke calls a function for each member of the array.

Ls911-949

Ext.zip

Ext. tosentence

Outdated things, not discussed.

L 958

Ext. useshims

It is also an hack for IE6 flash.

L 969-972

When Ext. application is loaded, an Ext. App. application is created.

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