以下脚本创建最多 4 个的新输入字段。我需要知道如何增加 ID,如下所示。
第一次点击,“var fieldHTML”生成:
<div><input type="text" id="sPhone_1" value=""/><a href="javascript:void(0);" class="remove_button"><img src="remove-icon.png"/></a></div>
第二次点击:id="sPhone_2" 第三次点击:id="sPhone_3" 以此类推..
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var maxField = 4; //Input fields increment limitation
var addButton = $('.add_button'); //Add button selector
var wrapper = $('.field_wrapper'); //Input field wrapper
var fieldHTML = '<div><input type="text" id="sPhone_" value=""/><a href="javascript:void(0);" class="remove_button"><img src="remove-icon.png"/></a></div>'; //New input field html
var x = 1; //Initial field counter is 1
//Once add button is clicked
$(addButton).click(function(){
//Check maximum number of input fields
if(x < maxField){
x++; //Increment field counter
$(wrapper).append(fieldHTML); //Add field html
}
});
//Once remove button is clicked
$(wrapper).on('click', '.remove_button', function(e){
e.preventDefault();
$(this).parent('div').remove(); //Remove field html
x--; //Decrement field counter
});
});
</script>
<div class="field_wrapper">
<div>
<input type="text" name="Phone" id="sPhone" value=""/>
<a href="javascript:void(0);" class="add_button" title="Add field"><img src="add-icon.png"/></a>
</div>
</div>
回答1
$(addButton).click(function(){
//Check maximum number of input fields
if(x < maxField){
x++; //Increment field counter
$(wrapper).append(fieldHTML); //Add field html
newId = 'sPhone_' + x;
document.getElementById('sPhone_').id = newId;
}
});
尝试这个。这应该在 html 中使用初始 id sPhone_ 发布 div,然后它会获取该元素并将 id 替换为您新创建的 id。
或者您可以创建字符串以附加到函数中,如下所示:
$(addButton).click(function(){
//Check maximum number of input fields
if(x < maxField){
x++; //Increment field counter
var fieldHTML = '<div><input type="text" id="sPhone_"' + x + 'value=""/><a href="javascript:void(0);" class="remove_button"><img src="remove-icon.png"/></a></div>'; //New input field html
$(wrapper).append(fieldHTML); //Add field html
}
});