I have an array of data that I'm iterating through, In the javascript map() function call I'm using the second argument that map() takes, 'index'. How would I pass index to the onClick event? I tried adding index to the list of arguments for onClick but all I can access are the events. Is there anyway I can pass the index through?
I'd like to be able to execute the commented out line 'handleImageClick(productObjects[index])'. I need to let the parent component know which productObject was clicked on by the user.
export default function SideProducts(props) {
const { productObjects, handleImageClick } = props;
const onClick = (e) => {
e.persist()
console.log(e)
//handleImageClick(productObjects[index])
}
console.log(productObjects)
return (
<Wrapper>
{productObjects.map((productObject,index) => (
<ImageWrapper key={index} src={productObject.image} onClick={(e) => onClick(e)}>
</ImageWrapper>
))}
</Wrapper>
)
}
I am doing this without testing, but you should be able to just pass the index like this.
const onClick = (e, index) => {
e.persist()
console.log(e)
//handleImageClick(productObjects[index])
}
console.log(productObjects)
return (
<Wrapper>
{productObjects.map((productObject,index) => (
<ImageWrapper key={index} src={productObject.image} onClick={(e) => onClick(e, index)}>
</ImageWrapper>
))}
</Wrapper>
)
}
This way. please go through this blog to learn more about passing arguments with onClick
export default function SideProducts(props) {
const { productObjects, handleImageClick } = props;
const onClick = (e, index) => {
e.persist()
console.log(e, index)
//handleImageClick(productObjects[index])
}
console.log(productObjects)
return (
<Wrapper>
{productObjects.map((productObject,index) => (
<ImageWrapper key={index} src={productObject.image} onClick={(e) => onClick(e, index)}>
</ImageWrapper>
))}
</Wrapper>
)
}
First you need to pass the index
as argument. onClick={(e) => onClick(e, index)}
Then receive that index as functional parameter.
const onClick = (e, index) => {
e.persist()
console.log(e, index)
//handleImageClick(productObjects[index])
}
Just add it as a parameter to yow onClick
<ImageWrapper key={index} src={productObject.image} onClick={(e) => onClick(e,productObject.addThePropHere)}>
</ImageWrapper>
Then in your function just add it as well
const onClick = (e,prop)=> ….code
You can use a higher-order function here to pass params as you want:
const handleWithIndex= index => {
return (event) => {
e.persist()
//handleImageClick(productObjects[index])
}
}
return (
<Wrapper>
{productObjects.map((productObject,index) => (
<ImageWrapper key={index} src={productObject.image} onClick={handleWithIndex(index)}>
</ImageWrapper>
))}
</Wrapper>
)
}
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