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JavaScript Auto-filling one field same as other
To auto-filling one field same as other, the JavaScript script is as follows −
Example
<!DOCTYPE html> <html> <head> <style> body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } </style> </head> <body> <h1>JavaScript Auto-filling one field same as other</h1> <h2>Enter your primary address</h2> Address<input class="address" type="text" /> Pin Code<input class="pincode" type="text" /> <h4>Secondary Address same as primary</h4> <input class="check" type="checkbox" /> Same Address <h2>Enter your secondary address</h2> Address<input class="address" type="text" /> Pin Code<input class="pincode" type="text" /> <script type="text/javascript"> let checkEle = document.querySelector(".check"); let addressEle = document.querySelectorAll(".address"); let pinCodeEle = document.querySelectorAll(".pincode"); checkEle.addEventListener("change", (event) => { if (event.target.checked) { console.log(addressEle[0].value); addressEle[1].value = addressEle[0].value; pinCodeEle[1].value = pinCodeEle[0].value; } }); </script> </body> </html>
Output
On filling the primary address and clicking the “Same Address” checkbox −
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