先上最终效果 （此处代码显示的是短信验证码框的效果 其余部分并未放上去）
html
<div> <input v-model="code[0]" type="text"/> <input v-model="code[1]"style="border-left:1px solid #c6c6c6;" type="text"/> <input v-model="code[2]"style="border-left:1px solid #c6c6c6;" type="text"/> <input v-model="code[3]" type="text"/> <inputclass="inputStyle" v-model="code[4]" maxlength="1" type="text"/> </div>
js
data (){ return { smsCode:'', code:new Array(5), codeId:['first','second','third','forth','fifth'] } }, watch:{ code:function(newValue,oldValue){ console.log('newValue.length'+newValue.length) let tempValue='' for(let i=0;i<newValue.length;i++){ if(i==5){ console.log(i) break } if(newValue[i]){ tempValue=tempValue+newValue[i] } } this.smsCode=tempValue console.log('smsCode '+this.smsCode) let m=tempValue.split("") let location=0 for(let i=0;i<newValue.length;i++){ if(m[i]&&i<5){ location++ newValue[i]=m[i] }else{ newValue[i]='' } } // console.log(this.codeId[i]) if(location<1){ location=1 }else if(location>5){ location=5 } document.getElementById(this.codeId[location-1]).focus() } },
CSS
.inputStyle{ width:20%; height:100%; text-align:center; border:none; }