智能提示插件如何编写

constructor(inputElement, options) {

thisput = inputElement;

this.suggestions = [];

this.container = document.createElement('div');

this.container.className = 'suggest-container';

// 初始化配置

this.minChars = options.minChars || 2;

this.maxItems = options.maxItems || 5;

// 绑定

thisput.addEventListener('input', this.handleInput.bind(this));

handleInput {

const value = thisput.value.trim;

if(value.length >= this.minChars) {

this.fetchSuggestions(value);

} else {

this.hideSuggestions;

fetchSuggestions(query) {

// 这里应该是API调用或本地数据处理

// 示例使用静态数据

const mockData = ['apple', 'application', 'appreciate', 'banana', 'orange'];

this.suggestions = mockData.filter(item =>

item.startsWith(query.toLowerCase)

).slice(0, this.maxItems);

this.showSuggestions;

showSuggestions {

// 清空并重建建议列表

this.containernerHTML = '';

this.suggestions.forEach(item => {

const div = document.createElement('div');

div.textContent = item;

this.container.appendChild(div);

});

// 定位到输入框下方

const rect = thisput.getBoundingClientRect;

this.container.style.top = `${rect.bottom}px`;

this.container.style.left = `${rect.left}px`;

document.body.appendChild(this.container);

hideSuggestions {

if(document.body.contains(this.container)) {

document.body.removeChild(this.container);