标签:info function elements console form forms HTML
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <form action=""> <input type="text" name="username" id="username"> <input type="password" name="password" id="password"> <input type="submit" value="submit"> </form> <script> let forms=document.forms console.log(forms) let form=forms.item(0) console.log(form) elements=form.elements console.dir(elements) console.info(elements[0]===elements.username) form.onsubmit=function(e){ console.dir(e) console.info('onsubmit') e.preventDefault() // return false } </script> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <form action=""> <input type="text" name="username" id="username"> <input type="password" name="password" id="password"> <input type="submit" value="submit"> </form> <script> let forms = document.forms console.log(forms) let form = forms.item(0) console.log(form) elements = form.elements console.dir(elements) console.info(elements[0] === elements.username) form.onsubmit = function (e) { console.dir(e) console.info('onsubmit') e.preventDefault() // return false } let input = elements.username input.onfocus = function (e) { console.info('onfocus', e) } input.onblur = function (e) { console.info('onblur', e) } input.onchange = function (e) { console.info('onchange', e) console.warn(input.value) } input.oninput = function (e) { console.info('oninput', e) } </script> </body> </html>
标签:info,function,elements,console,form,forms,HTML 来源: https://www.cnblogs.com/dissipate/p/16025374.html
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