如何在数组的 .map 中调用函数?
How can I call a function inside of a .map of arrays?
我正在通过 props 传递一个函数,该函数将一些被映射的项目大写。我在 item.creator.I 的项目部分收到错误,我只是想知道为什么我会收到错误而不能只调用地图内部的函数。感谢您的帮助。
错误消息是行解析错误:意外的标记,应为“,”。
父组件
export default function MainContent() {
const techContent = useSelector(displayTechContent);
const designContent = useSelector(displayDesignContent);
const makeCapital = (words) => words.replace(/^\w/, (c) => c.toUpperCase());
return (
<div className="container">
<div className="topics-list">
<div className="topic-row mb-5">
<h2 className="topic-heading mb-4">Software Development</h2>
<ContentCard data={techContent} capitalize={makeCapital} />
</div>
子组件
export default (props) => (
<div>
<div className="resource-list">
{props.data.map((item) => (
<a key={item.id} href={item.link} className="resource-card-link mr-3">
<div className="card resource-card mb-2">
<div className="card-header">
<h4 className="resource-title">{item.title}</h4>
<span className="resource-creator">by: ***{props.capitalize({item.creator})}***.</span> <--this function
</div>
<div className="card-body py-3">
<div className="resource-description mb-2">
{item.description}
</div>
<div className="resource-type mb-2">
<i className="fas fa-book"></i> {item.type}
</div>
item.creator
周围的大括号是多余的。
export default (props) => (
<div>
<div className="resource-list">
{props.data.map((item) => (
<a key={item.id} href={item.link} className="resource-card-link mr-3">
<div className="card resource-card mb-2">
<div className="card-header">
<h4 className="resource-title">{item.title}</h4>
<span className="resource-creator">by: ***{props.capitalize(item.creator)}***.</span> <--this function
</div>
<div className="card-body py-3">
<div className="resource-description mb-2">
{item.description}
</div>
<div className="resource-type mb-2">
<i className="fas fa-book"></i> {item.type}
</div>
我正在通过 props 传递一个函数,该函数将一些被映射的项目大写。我在 item.creator.I 的项目部分收到错误,我只是想知道为什么我会收到错误而不能只调用地图内部的函数。感谢您的帮助。
错误消息是行解析错误:意外的标记,应为“,”。
父组件
export default function MainContent() {
const techContent = useSelector(displayTechContent);
const designContent = useSelector(displayDesignContent);
const makeCapital = (words) => words.replace(/^\w/, (c) => c.toUpperCase());
return (
<div className="container">
<div className="topics-list">
<div className="topic-row mb-5">
<h2 className="topic-heading mb-4">Software Development</h2>
<ContentCard data={techContent} capitalize={makeCapital} />
</div>
子组件
export default (props) => (
<div>
<div className="resource-list">
{props.data.map((item) => (
<a key={item.id} href={item.link} className="resource-card-link mr-3">
<div className="card resource-card mb-2">
<div className="card-header">
<h4 className="resource-title">{item.title}</h4>
<span className="resource-creator">by: ***{props.capitalize({item.creator})}***.</span> <--this function
</div>
<div className="card-body py-3">
<div className="resource-description mb-2">
{item.description}
</div>
<div className="resource-type mb-2">
<i className="fas fa-book"></i> {item.type}
</div>
item.creator
周围的大括号是多余的。
export default (props) => (
<div>
<div className="resource-list">
{props.data.map((item) => (
<a key={item.id} href={item.link} className="resource-card-link mr-3">
<div className="card resource-card mb-2">
<div className="card-header">
<h4 className="resource-title">{item.title}</h4>
<span className="resource-creator">by: ***{props.capitalize(item.creator)}***.</span> <--this function
</div>
<div className="card-body py-3">
<div className="resource-description mb-2">
{item.description}
</div>
<div className="resource-type mb-2">
<i className="fas fa-book"></i> {item.type}
</div>