SharePoint Online Delete all Items from list using JavaScript Object model

Here we will discuss how to delete all SharePoint list items using JavaScript object model in SharePoint Online Office 365. I have used to code inside a script editor web part inside a web part page.

Below is the JavaScript object model.

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<input type=”button” id=”btnDeleteItems” value=”Click Here”/>

<script src=”https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js”></script>

<script>

$(document).ready(function(){

$(“#btnDeleteItems”).click(function(){

DeleteAllItems();

});

});

function DeleteAllItems(){

var ctx = SP.ClientContext.get_current(),

list = ctx.get_web().get_lists().getByTitle(‘Ideas’),

query = new SP.CamlQuery(),

items = list.getItems(query);

ctx.load(items, “Include(Id)”);

ctx.executeQueryAsync(function () {

var enumerator = items.getEnumerator(),

itemArray = [];

while (enumerator.moveNext()) {

itemArray.push(enumerator.get_current());

}

for (var s in itemArray) {

itemArray[s].deleteObject();

}

ctx.executeQueryAsync();

});

}

</script>

Hope this will be helpful.