nercon 2019-12-28
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>表单事件</title> </head> <body> <form action=""> <input type="text" name="usr"> <button type="submit">提交</button> <div></div> </form> </body> <script type="text/javascript"> var form = document.querySelector(‘form‘) var ipt = document.querySelector(‘input‘) var btn = document.querySelector(‘button‘) ipt.onselect = function () { console.log(‘文本被选中‘); }; var div = document.querySelector(‘div‘) // ipt.oninput = function () { // console.log(‘值改变‘); // div.innerText = this.value // }; // ipt.onkeyup = function () { // div.innerText = this.value // } // ipt.onchange = function () { // div.innerText = this.value // } form.onsubmit = function () { console.log(‘提交‘) return false; } </script> </html>