这是基本结构
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>中文输入法的高频事件</title></head><body><input type="text" class="txt" /><script>var inp = document.querySelector("input");function search() {console.log("搜索:" + inp.value);}inp.addEventListener("input", function () {search();});</script></body>
</html>
输出：
发现在中文还没选中就触发了，现在希望没选中不要触发
改写代码
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>中文输入法的高频事件</title></head><body><input type="text" class="txt" /><script>var inp = document.querySelector("input");function search() {console.log("搜索:" + inp.value);}inp.addEventListener("input", function () {search();});inp.addEventListener("compositionstart", () => {console.log("中文输入开始");});inp.addEventListener("compositionend", () => {console.log("中文输入结束");});</script></body>
</html>
打印结果：
我们要做的是从开始到结束中间的过程过滤掉，不触发搜索
直接上代码
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>中文输入法的高频事件</title></head><body><input type="text" class="txt" /><script>var inp = document.querySelector("input");function search() {console.log("搜索:" + inp.value);}let isComposition = false;inp.addEventListener("input", function () {if (isComposition) {return;}search();});inp.addEventListener("compositionstart", () => {isComposition = true;console.log("中文输入开始");});inp.addEventListener("compositionend", () => {isComposition = false;console.log("中文输入结束");search();});</script></body>
</html>
完美解决
