dojo.getAttr

Contents

• dojo.getAttr
  • Introduction
  • Usage
  • Examples
  • See also

Gets an attribute on an HTML element.

Introduction

dojo.getAttr() is a companion function for dojo.attr. It handles normalized getting of attributes on DOM Nodes and return the value of the requested attribute or null if that attribute does not have a specified or default value.

Since Dojo 1.7, dojo.getAttr is exposed via the get method of the dojo/dom-attr module. An alias is kept in dojo/_base/html for backward-compatibility.

Usage

// Dojo 1.7+ (AMD)
require(["dojo/dom-attr"], function(domAttr){
  domAttr.get(node, attr);
});

// Dojo < 1.7
dojo.getAttr(node, attr);

// Dojo 1.7+ (AMD) require(["dojo/dom-attr"], function(domAttr){ domAttr.get(node, attr); }); // Dojo < 1.7 dojo.getAttr(node, attr);

node

id or reference to the element to get the attribute on.

attr

the name of the attribute to get.

Examples

Dojo 1.7 (AMD)

When using AMD format in a fully baseless application, get is accessed from the dojo/dom-attr module.

require(["dojo/dom-attr", "dojo/dom"], function(domAttr, dom){
    // get the current value of the "foo" attribute on a node
    domAttr.get(dom.byId("nodeId"), "foo");

    // or we can just pass the id:
    domAttr.get("nodeId", "foo");
});

require(["dojo/dom-attr", "dojo/dom"], function(domAttr, dom){ // get the current value of the "foo" attribute on a node domAttr.get(dom.byId("nodeId"), "foo"); // or we can just pass the id: domAttr.get("nodeId", "foo"); });

Alternatively, you can load dojo base in AMD style and continue using dojo.getAttr in the define or require callback:

require(["dojo"], function(dojo){
    // get the current value of the "foo" attribute on a node
    dojo.getAttr(dojo.byId("nodeId"), "foo");

    // or we can just pass the id:
    dojo.getAttr("nodeId", "foo");
});

require(["dojo"], function(dojo){ // get the current value of the "foo" attribute on a node dojo.getAttr(dojo.byId("nodeId"), "foo"); // or we can just pass the id: dojo.getAttr("nodeId", "foo"); });

Dojo < 1.7

// get the current value of the "foo" attribute on a node
dojo.getAttr(dojo.byId("nodeId"), "foo");

// or we can just pass the id:
dojo.getAttr("nodeId", "foo");

// get the current value of the "foo" attribute on a node dojo.getAttr(dojo.byId("nodeId"), "foo"); // or we can just pass the id: dojo.getAttr("nodeId", "foo");

See also

DOM operations:

• dojo.attr
• dojo.getNodeProp
• dojo.setAttr
• dojo.hasAttr
• dojo.removeAttr
• dojo.style

NodeList:

• dojo.NodeList
• dojo.NodeList.attr
• dojo.NodeList.removeAttr

External links:

• DOM Attributes and The Dojo Toolkit 1.2

Table of Contents

• dojo.getAttr
  • Introduction
  • Usage
  • Examples
    • Dojo 1.7 (AMD)
    • Dojo < 1.7
  • See also