我想通过点击添加按钮使用下面的JavaScript来动态地添加形式输入字段以一种形式:添加输入字段到一个HTML表单
var i = 0;
function increment() {
i += 1;
}
function addfieldFunction() {
var r = document.createElement('div');
var y = document.createElement("INPUT");
var z = document.createElement("INPUT");
y.setAttribute("class", "dash-input");
y.setAttribute("type", "text");
y.setAttribute("placeholder", "University");
z.setAttribute("class", "dash-input");
z.setAttribute("type", "text");
z.setAttribute("placeholder", "Course");
increment();
y.setAttribute("Name", "a_level[ + i ][0]");
r.appendChild(y);
z.setAttribute("Name", "a_level[ + i ][1]");
r.appendChild(z);
document.getElementById("form-div").appendChild(r);
}
<form class = "dash-form" method = "POST" action = "/" >
<div id = "form-div">
<input class = "dash-input" type = "text" name = "a_level[+i][0]" value = "" placeholder = "University"/>
<input class = "dash-input" type = "text" name = "a_level[+i][1]" value = "" placeholder = "Course"/>
</div>
<div class = "dash-submit">
<input class = "dash-submit-button" type = "submit" value = "Submit"/>
</div>
</form>
<div class = "dash-add">
<button class = "dash-add-button" onclick = "addfieldFunction()">ADD</button>
</div>
该函数返回一个我代替递增和返回一个整数如下所示:
<div id = "form-div">
<input class = "dash-input" type = "text" name = "a_level[0][0]" value = "" placeholder = "University"/>
<input class = "dash-input" type = "text" name = "a_level[0][1]" value = "" placeholder = "Course"/>
</div>