Bindings /
a. Basics b. Adding data c. Dynamic attributes d. Styling e. Nested components f. Making an app a. Assignments b. Declarations c. Statements d. Updating arrays and objects a. Declaring props b. Default values c. Spread props a. If blocks b. Else blocks c. Else-if blocks d. Each blocks e. Keyed each blocks f. Await blocks a. DOM events b. Inline handlers c. Event modifiers d. Component events e. Event forwarding f. DOM event forwarding a. Text inputs b. Numeric inputs c. Checkbox inputs d. Group inputs e. Textarea inputs f. Select bindings g. Select multiple h. Contenteditable bindings i. Each block bindings j. Media elements k. Dimensions l. This m. Component bindings n. Binding to component instances a. onMount b. onDestroy c. beforeUpdate and afterUpdate d. tick a. Writable stores b. Auto-subscriptions c. Readable stores d. Derived stores e. Custom stores f. Store bindings a. Tweened b. Spring a. The transition directive b. Adding parameters c. In and out d. Custom CSS transitions e. Custom JS transitions f. Transition events g. Local transitions h. Deferred transitions i. Key blocks a. The animate directive a. The use directive b. Adding parameters a. The class directive b. Shorthand class directive c. Inline styles d. The style directive a. Slots b. Slot fallbacks c. Named slots d. Checking for slot content e. Slot props a. setContext and getContext a. <svelte:self> b. <svelte:component> c. <svelte:element> d. <svelte:window> e. <svelte:window> bindings f. <svelte:document> g. <svelte:body> h. <svelte:head> i. <svelte:options> j. <svelte:fragment> a. Sharing code b. Exports a. The @debug tag b. HTML tags a. Congratulations!
We can also use bind:value with <select> elements. Update line 20:
< select bind : value = {selected} on : change = "{ () => answer = ''}" > Note that the <option> values are objects rather than strings. Svelte doesn't mind.
Because we haven't set an initial value of selected, the binding will set it to the default value (the first in the list) automatically. Be careful though — until the binding is initialised, selected remains undefined, so we can't blindly reference e.g. selected.id in the template. If your use case allows it, you could also set an initial value to bypass this problem.
Show me