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js实现输入框输入中文弹出警告

2025-03-30 19:56:02

推荐回答（1个）

回答1：

var t=document.getElementById("txt"); t.onkeyup=function(ev){
var e=ev||window.event;
var text=t.value;
console.log(escape(text));
if(escape(text).indexOf("%u")>=0){
alert("不能输入中文");
}
}

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