我是javascript的新手，我正努力在函数中正确使用语法以从包含字母'i'的数组中提取元素。
let teachers = ["Arrington","Kincart","Alberts","Pickett"]
let rooms = [
["Andy","Rodolfo","Lynn","Talia"],["Al","Ross","Jorge","Dante"],["Nick","Kim","Jasmine","Dorothy"],["Adam","Grayson","Aliyah","Alexa"]
]
let iInName = (teacher) => {
let nameWithI = []
teachers.forEach((withI) => {
if(teacher.includes('i') {
nameWithI.push(withI)
}
})
return nameWithI
}
iInName()
任何见识都将不胜感激。这是我第一次在这里发帖；如果我错过任何信息或忽略任何礼节，很高兴解决！
withI传递给您定义的此函数（callback）。 teachers是名称数组，每个名称都调用withI。
if(teacher.includes('i')应该为if(withI.includes('i'))，因为withI是老师的名字。
您可能还想研究Array.prototype.filter
function iInName(teachers) {
let nameWithI = []
teachers.forEach((withI) => { // A function or commonly referred to as a callback
if(withI.includes('i') { // Changed from teachers (of type array)
nameWithI.push(withI) // To withI (type string)
}
})
/*
return teachers.filter((name) => {
return name.includes('i') // Keeps value if true
})
*/
// return teachers.filter(name => name.includes('i'))
return nameWithI
}
iInName(['joe','marie']) // Any array
您只需要三种解决方案之一，一种用/*和*/注释掉，另一种用//注释掉。最相似的一种是未注释（使用）。