New params parameter enacted so you can dom(), then to the getOrMakeDom() may vary in the kind of parameter that can be introduced. Exactly like jQuery the fresh type’s off value’s enacted are going to be people among following the:
The result of passing params ‘s the build of a chain-in a position target with records so you’re able to nodes (e
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- css selector sequence (e.g. dom(‘body’))
- html string (e.g. dom(‘
Hellow
Industry!
‘))
- Ability node (elizabeth.grams. dom(file.body))
- assortment of feature nodes (age.grams. dom([file.body]))
- a great NodeList (elizabeth.g. dom(document.human body.children))
- an excellent HTMLcollection (elizabeth.g. dom(file.all))
- an effective dom() target in itself. (elizabeth.grams. dom(dom()))
g. <0:ELEMENT_NODE,1:ELEMENT_NODE,length:2>) either in the DOM or in a document fragment. Lets examine how each of the above parameters can be used to produce an object containing node references.
The fresh new reason permitting such as for instance numerous parameter sizes are revealed lower than on the password and you can begins with a simple take a look at to confirm that params is not undefined, a blank sequence, or a string that have blank areas. If this sounds like the way it is i include a point property with a worth of 0 with the target made of getting in touch with GetOrMakeDOM and you will come back the item therefore, the execution of mode closes. When the params is not a false (otherwise false particularly) worth the fresh new delivery of one’s mode continues.
Next the params value, if a string, is checked to see if contains HTML. If the string contains HTML then a document fragment is created and the string is used as the innerHTML value for a
If the the a string selector, a node listing is established from the calling the fresh new queryselectorAll() method to the currentContext. When the it isn’t a set selector i circle along side html range, node list, selection, or object extracting the newest node references and utilizing the fresh new records because values within the object delivered back regarding getting in touch with new GetOrMakeDom.
This logic within GetOrMakeDom() form can be a bit daunting only know that the purpose of your own constructor mode should be to build an object with which has references so you can nodes (e.grams. ) and returns which object in order to dom().
a dozen.six Create for each() means and come up with they a beneficial chainable means
Whenever we invoke dom() we could availableness something linked to dom.fn using prototypical inheritance. (e.grams. dom().each()). Perhaps not unlike jQuery strategies connected with dom.fn run using the thing created from the fresh GetOrMakeDom constructor mode. This new password less than configurations the newest for every single() means.
As you might assume this new for every() means requires a great callback become a factor and you may invokes brand new mode (setting the latest which well worth for the feature node target that have phone call()) each node element in this new getOrMakeDom object instance. The brand new which worth within the per() means is a mention of the getOrMakeDom target such (elizabeth.g. ).
Whenever a method doesn’t get back a value (e.grams. dom().length production a distance) its likely to allow strategy chaning by simply returning the thing the process belongs as well rather than a certain worthy of. Basically, the audience is coming back new GetOrMakeDom object so several other means are going to be named with this example of the thing. In the password below I’d like the fresh for every() approach to be chainable, meaning much more actions will likely be named immediately after calling for every(), so i only get back so it. This new which throughout the code lower than ‘s the object instance created out of contacting brand new getOrMakeDom means.