SharePoint 2013 REST Service how to Retrive The List Items

How to Call SharePoint 2013 API

1. Create a link list named "Links", and create a column named "Category", the column is use for category the links, and filter the items. the add some items.

2. Edit the page that you want to show the Links list items. and add the webpart named Script Edittor to store the js code. then edit the webpart and add the js code into the webpart.

<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
</script>

$(document).ready(function () {
ExecuteOrDelayUntilScriptLoaded(getLinksInfo, "sp.js");
});
function getLinksInfo() {

var requestUri = "http://dev-sp"+ "/_api/Web/Lists/getByTitle('Links')/items";
var ulIcons = $("#test");

$.ajax({
url: requestUri,
type: "GET",
headers: { "ACCEPT": "application/json;odata=verbose" },
success: function (data) {

var items = "";
$.each(data.d.results, function (index) {
switch ($(this).attr("Category")) {
case "Operations":
items += "<li><a href='mailto:" + $(this)[0].URL.Url+ "'>" + $(this)[0].URL.Description + " -  Operation" + "</a></li>"
break;
case "Marketing":
items += "<li><a href='" + $(this)[0].URL.Url + "'>" + $(this)[0].URL.Description + " - Markrting" + "</a></li>"
break;
}

});

if (items != "") {
ulIcons.html("");
ulIcons.html(items);
}
},
error: function (e) {
alert("Failed to get Escalations Icons!");
}
});
}

</script>

3. Clicke "Ok" abdou the script webpart and save the page. It wiil show the result