- 17Set a value to a Svelte 3 store45s
Set a value to a Svelte 3 store
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Sometimes we don't want to have a complicated update function to change a value of our store. We know exactly what we want to change the value to - we can just use the store.set function to do that.
In this lesson we're going to learn how to set a value to a Svelte 3 store by using the store.set function to set the value of a counter without having to increment/decrement it one by one.
What's the difference between store.update and store.set?
I guess only different is update also pass down the current state.
Thanks for asking!
‘store.update’ takes an update function as an argument and ‘store.set’ just sets the store value to whatever you provide to it.
My code was malfunctioning when I clicked the increment button immediately after setting the store value via the input element. The increment store.update function (n=> n + 1) was interpreting the value as a string and appending 1 to the number. eg set value = 20, increment => 201, increment => 2011. Fixed it by adding parseInt to the Setter set function => set(parseInt(event.target.value))