一、使用replace方法（推荐）
function getHighlightText({keyWord, text} = {}) {
if (!keyWord || !text) {
return text
}
const condition = '(' + keyWord + ')'
const reg = new RegExp(condition, 'ig')
return text.replace(reg, '<span class="high-light">$1</span>')
}
二、使用RegExp的exec方法
function getHighlightText({keyWord, text} = {}) {
if (!keyWord || !text) {
return text
}
const reg = new RegExp(keyWord, 'ig')
let result
let highlightText = ''
let nexIndex = 0
while ((result = reg.exec(text)) !== null) {
highlightText += text.substring(nexIndex, result.index) + `<span class="high-light">${result[0]}</span>`
nexIndex = reg.lastIndex
}
if (nexIndex !== text.length - 1) {
highlightText += text.substring(nexIndex)
}
return highlightText
}
