javascript create dom node 创建节点

window.dom

window.dom = {
	getId: function(id) {
		return document.getElementById(id);
	},
	create: function(tag, attr) {
		var el = document.createElement(tag);
		for (var key in attr) {
			el.setAttribute(key, attr[key]);
		}
		return el;
	}
};

 

Usage:

var node = dom.create('div', {id: 'J_wrapper'});
    input = dom.create('input', {
		type: 'text', 
		value: 'xxxx',
		name: 'username'
	});
document.body.append(node);
// document.body.insertBefore(input, node);
node.append(input);