Knock out options

Knock out options

1/24/ · A knock-in option is a latent options contract that comes into effect once the underlying asset reaches a certain price before the expiration date of the contract. An options contract is an agreement between a buyer and a seller to execute a transaction to buy or sell an asset at a specified price before a predetermined date 4/17/ · A knock-out option is an option contract that will automatically expire even before the set expiration date arrives when a specified price level of underlying asset is reached. This option sets a cap on the price level a contract option can reach to ensure that a price disadvantageous to the option writer is not reached Knockout: The "options" binding The "options" binding Purpose The options binding controls what options should appear in a drop-down list (i.e., a element) or multi-select list (e.g., ). This binding cannot be used with anything other than elements. The value you assign should be an array (or observable array)

Knock-Out Option Definition

The options binding controls what options should appear in a drop-down list i. The value you assign should be an array or observable array. Note: For a multi-select list, to set which of the options are selected, knock out options, or to read which of the options are selected, use the selectedOptions binding.

For a single-select list, you can also read and write the selected option using the value binding. Note that the only difference between examples 3 and 4 is the optionsText value.

You should supply an array or observable array. Any knock out options options will be removed. However, knock out options, if you want to let the user choose from an array of arbitrary JavaScript objects not merely stringsthen see the optionsText and optionsValue parameters below.

Sometimes, you might not want to select any particular option by default. But a single-select drop-down list usually starts with some item selected, so how can you avoid preselecting something?

This easy to do: just add an additional parameter with name optionsCaptionwith its value being a string to display. For example:. So, if myChosenValue holds the value undefined which observables do by defaultthen the dummy option will be selected. See Example 3 above to see how you can bind options to an array of arbitrary JavaScript object - not just strings.

Example 3 shows how you can specify that property name by passing an additional parameter called optionsText. See Knock out options 4 above, which shows how you could generate the displayed text by concatenating together multiple property values.

You can also specify a JavaScript function to determine this value. Sometimes you may want to mark an array entry as deleted, but without actually losing record of its existence. This is known as a non-destructive delete. For details of how to do this, see the destroy function on observableArray. By default, the options binding will skip over i. If you want to show destroyed entries, then specify this additional parameter like:. If you knock out options to run some further custom logic on the generated option elements, you can use the optionsAfterRender callback.

See Note 2 below. For a knock out options list, you can read and write the selection state using selectedOptions. Technically this is a separate binding, so it has its own documentation. The callback function is invoked each time an option element is inserted into the list, with the following parameters:. The "options" binding Purpose The options binding controls what options should appear in a drop-down list i. then later observableArray [ new Country "UK",new Country "USA",new Country "Sweden", ]selectedCountry : ko.

observable false }, { name: 'Item 3', id: 3, disable: ko. observable true }, { name: 'Item 4', id: 4, disable: ko. observable false } ], setOptionDisable: function option, item { ko.

applyBindingsToNode option, knock out options, {disable: item. disable}, item ; } }; ko.

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knock-out options - Kantox

A Knock-Out is a type of limited-risk position which gives you full control over your margin and your risk. Discover everything you need to know about knock-outs, including how they work and how to trade them. Call +44 (20) , Malaysia Toll Free: or email blogger.com@blogger.com to talk about opening a trading account Knock-out options include the following elements: Knock out options are speculative products that do not guarantee to hedge against FX risk. If the exchange rate hits the Knock-outlevel, the option will be cancelled and the buyer will remain exposed to currency volatility. Products Dynamic Pricing Dynamic Hedging Payments & Collections 1/24/ · A knock-in option is a latent options contract that comes into effect once the underlying asset reaches a certain price before the expiration date of the contract. An options contract is an agreement between a buyer and a seller to execute a transaction to buy or sell an asset at a specified price before a predetermined date