一、关键字查询
var arr = [{name:"你是谁,他在那里",id:1102},{name:"圈住你在那里",id:1102},{name:"hello在那里",id:1102},{name:"怪你",id:1102},{name:"world",id:1102},]
1.enter回车获取关键字
2.使用关键字,对数据查询,得到一个新的数组
3.name的字符超过3位以…结尾
var txt = document.getElementById("txt");txt.onkeydown = function(event){if(event.keyCode == 13){var value = this.value;if(value){var res = arr.filter(item=>{return item.name.includes(value);})res.map(item=>{if(item.name.length>3){return item.name = item.name.slice(0,3)+"..."}})console.log(res)}}}
