[英]How do I populate a form in JSP with data obtained from a Javascript function
[英]How do i receive form data from the dynamically created JavaScript form fields into JSP?
但是,当我尝试从动态创建的表单字段中获取值时,我从表单提交中获取了空值,但没有使用html中创建的文本字段。 任何帮助,将不胜感激。
小代码段。
for (i=0;i<number;i++){
// Append a node with a random text
container.appendChild(document.createTextNode(("Sl.No ")));
container.appendChild(document.createTextNode((i+1)));
// Create an <input> element, set its type and name
attributes
//name
var input = document.createElement("input");
input.type = "text";
input.name = "name" + i;
container.appendChild(input);
//age
var input = document.createElement("input");
input.type = "text";
input.name = "age" + i;
container.appendChild(input);
//book button
var input = document.createElement("input");
input.type = "submit";
input.name = "sbtn";
input.value="Book";
}
下面的代码可完美地提交动态创建的字段。
HTML:
<form id="myForm" action="/" method="post">
<label id="authlabel">User Authentication method:</label>
<br>
<select id="authMethod" name="authmethod">
<option disabled selected value> -- select an option -- </option>
<option value="userName">Name</option>
<option value="userId">User ID</option>
</select>
<br>
<input type="submit" value="submit"></input>
</form>
JS:
const myForm = document.querySelector('#myForm');
document.querySelector('#authmethod').addEventListener('change', function(event){
let authInput = document.createElement('input');
authInput.name = event.target.value;
myForm.insertBefore(authInput, event.target.nextSibling);
});
如果由于某种原因对您不起作用,您是否会提交HTML和完整的javascript上下文?
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