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廢話不多說，關鍵代碼如下所示：
---恢複內容開始---<html> <head> <script>window.onload=function(){ var form=document.getElementsByTagName('form')[0]; var txt=form.elements['txt1']; var txt1=form.elements['txt2']; txt.onkeyup=function(){ if(this.value.length==this.maxLength){ for(var i=0;i<form.elements.length;i++){ if(form.elements[i]==this){ form.elements[i+1].focus(); } } } }} </script> </head> <body> <form> <input type="text" name="txt1" maxlength="5"> <input type="text" name="txt2" maxlength="4"> </form> </body></html>---恢複內容結束---
以上所述是小編給大家介紹的JavaScript表單焦點自動切換代碼，希望對大家有所協助！
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