[英]How do I output HTML form data using Javascript?
我碰到了一點牆。 使用我當前的JS,當用戶點擊“添加”時,如何在class =“ household”中輸出當前表單字段的結果?
*我仍然想保留刪除功能。
我不能僅編輯HTML JS。 如有任何幫助,我們將不勝感激。 謝謝!
HTML
<ol class="household"></ol>
<form>
<div>
<label>Age
<input type="text" name="age">
</label>
</div>
<div>
<label>Relationship
<select name="rel">
<option value="">---</option>
<option value="self">Self</option>
<option value="spouse">Spouse</option>
<option value="child">Child</option>
<option value="parent">Parent</option>
<option value="grandparent">Grandparent</option>
<option value="other">Other</option>
</select>
</label>
</div>
<div>
<label>Smoker?
<input type="checkbox" name="smoker">
</label>
</div>
<div>
<button class="add">add</button>
</div>
<div>
<button type="submit">submit</button>
</div>
</form>
JS
function validate(form) {
fail = validateAge(form.age.value)
fail += validateRel(form.rel.value)
if (fail == "") return true
else {
alert(fail);
return false
}
}
function validateAge(field) {
if (isNaN(field)) return "No age was entered. \n"
else if (field < 1 || field > 1000)
return "Age must be greater than 0. \n"
return ""
}
function validateRel(field) {
if (field == "") return "Please select a relationship \n"
return ""
}
document.querySelector("form").onsubmit = function() {
return validate(this)
}
document.querySelector(".add").onclick = function() {
createinput()
};
count = 0;
function createinput() {
field_area = document.querySelector('.household')
var li = document.createElement("li");
var input = document.createElement("input");
input.id = 'field' + count;
input.name = 'field' + count;
input.type = "text"; //Type of field - can be any valid input type like text,file,checkbox etc.
li.appendChild(input);
field_area.appendChild(li);
//create the removal link
var removalLink = document.createElement('a');
removalLink.onclick = function() {
this.parentNode.parentNode.removeChild(this.parentNode)
}
var removalText = document.createTextNode('Remove Field');
removalLink.appendChild(removalText);
li.appendChild(removalLink);
count++
}
add
按鈕正在提交表單。 您可以通過在處理函數中調用event.preventDefault()
來防止這種情況。
document.querySelector(".add").onclick = function(event) {
event.preventDefault();
createinput()
};
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