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mini project.html
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mini project.html
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<html>
<head>
<title> Js </title>
</head>
<body>
<h1> Mini Project </h1>
<h2> To do list </h2> <br>
<form id="form1">
<button type="button" id="add" onclick="add_child()"> Add an element </button> <br> <br>
<button type="button" id="delete_last" onclick="delete_last_child()"> Delete last element </button> <br><br>
<button type="button" id="delete" onclick="delete_child()"> Delete element </button> <br><br>
<button type="button" id="edit" onclick="edit_child()"> edit list </button> <br><br>
</form>
<ol id="list">
</ol>
<script type="text/javascript">
var ctr=0
function add_child()
{
item=prompt("Enter item")
var li=document.createElement("li")
list=document.querySelector("#list")
var a=document.createElement("div")
list.appendChild(li)
li.appendChild(a)
a.innerHTML=item
ctr++
}
function delete_last_child()
{
list=document.querySelector("#list")
var a=document.createElement("div")
var li=document.createElement("li")
list.removeChild(list.childNodes[ctr])
ctr--
}
function delete_child()
{
temp=[]
while (true)
{
item=prompt("Enter item number you want to delete")
if(item<=ctr)
{
break
}
else
{
alert("Item does not exist")
}
}
list=document.querySelector("#list")
var a=document.createElement("div")
var li=document.createElement("li")
for (i=1;i<=ctr;i++)
{
temp.push(list.childNodes[i].childNodes[0].innerHTML)
}
item_caught=temp.filter(el=>el==temp[item-1])
list.removeChild(list.childNodes[item])
ctr--
}
function edit_child()
{
while (true)
{
arg_item=prompt("Enter item number which you want to move")
if(arg_item<=ctr)
{
break
}
else
{
alert("Item does not exist")
}
}
while (true)
{
target_item=prompt("Enter item number before which you want to place the item")
if(target_item<=ctr)
{
break
}
else
{
alert("Item does not exist")
}
}
list=document.querySelector("#list")
var a=document.createElement("div")
var li=document.createElement("li")
list.insertBefore(list.childNodes[arg_item],list.childNodes[target_item])
ctr=ctr
}
</script>
</body>
</html>