MindFusion.Common.Collections.IEnumerable.first Method | JavaScript Component Suite

IEnumerable.first Method

Syntax

JavaScript Copy Code
function first ()

Object. The first element in the collection.

The following code checks if the first item in the collection of items in a TreeNode is span:

JavaScript Copy Code
// create a tree node that will be a root in our hierarchy var root = new ui.TreeNode("body"); root.expanded = true; var span = new ui.TreeNode("span"); var div = new ui.TreeNode("div"); var p = new ui.TreeNode("p"); var elements = [span, div, p]; root.items.addRange(elements); ....................... if (root.items.first() == span) { //do something }

JavaScript

Copy Code

// create a tree node that will be a root in our hierarchy
var root = new ui.TreeNode("body");
root.expanded = true;

var span = new ui.TreeNode("span");
var div = new ui.TreeNode("div");
var p = new ui.TreeNode("p");

var elements = [span, div, p];
root.items.addRange(elements);
.......................

if (root.items.first() == span)
{
//do something
}