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The Document.createAttribute() method creates a new attribute node, and returns it. The object created a node implementing the Attr interface. The DOM does not enforce what sort of attributes can be added to a particular element in this manner.
The string given in parameter is converted to lowercase.
Syntax
attribute = document.createAttribute(name)
Parameters
nameis a string containing the name of the attribute.
Return value
A Attr node.
Exceptions
INVALID_CHARACTER_ERRif the parameter contains invalid characters for XML attribute.
Example
var node = document.getElementById("div1");
var a = document.createAttribute("my_attrib");
a.value = "newVal";
node.setAttributeNode(a);
console.log(node.getAttribute("my_attrib")); // "newVal"
Specifications
| Specification | Status | Comment |
|---|---|---|
| DOM The definition of 'Document.createAttribute()' in that specification. |
Living Standard | Precised behavior with uppercase characters |
| Document Object Model (DOM) Level 3 Core Specification The definition of 'Document.createAttribute()' in that specification. |
Recommendation | No change. |
| Document Object Model (DOM) Level 2 Core Specification The definition of 'Document.createAttribute()' in that specification. |
Recommendation | No change. |
| Document Object Model (DOM) Level 1 Specification The definition of 'Document.createAttribute()' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
| Feature | Firefox (Gecko) | Chrome | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 1.0 (1.7 or earlier)[1] | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Firefox Mobile (Gecko) | Android | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
onselectionchange |
1.0 (1)[1] | (Yes) | (Yes) | (Yes) | (Yes) |
[1] Before Firefox 44, the parameter wasn't converted to its lowercase variant.