P粉5461798352023-09-05 09:47:38
在这里你可以尝试这个逻辑：
function sub(ev) {
ev.preventDefault();
let frame1 = document.getElementById("frame1");
let parser = new DOMParser();
let doc = parser.parseFromString(frame1.innerHTML, "text/html");
let iframeForm = doc.body.querySelector("form");
console.log(iframeForm);
//通过name属性访问表单输入字段的值
console.log(iframeForm.cn.value);
}
<!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>
<iframe name="myframe" id="frame1" src="contact_inputs.php">
<form id="iframe1Form">
<input type="" name="cn" value ="HELLO"/>
<input type="" name="ex" />
<input type="" name="cr" />
</form>
</iframe>
<form onsubmit="sub(event)">
<input type="submit" name="DoIt" value="submit" />
</form>
</body>
</html>