HTML DOM Input Number placeholder attribute
Examples
Modify the message text number field:
document.getElementById("myNumber").placeholder = "Amount";
try it"
Definition and Usage
placeholder placeholder attribute is used to set or return the property value number field.
placeholder attribute provides a description of the input fields can be expected message.
The prompt is displayed in the input field empty, and disappears when the field gets the focus.
Browser Support
All major browsers support the placeholder attribute.
Note: Internet Explorer 9 and earlier versions of IE do not support the use of type = "number" <input> element attributes.
grammar
Back placeholder attributes:
numberObject .placeholder
Setting placeholder properties:
numberObject .placeholder= text
Property Value
| 值 | 描述 |
|---|---|
| text | 描述了number字段预期值提示信息 (一个单词或一个短语) |
technical details
| return value: | String that represents the expected value of the number field message |
|---|
More examples
Examples
Display message number field:
var x = document.getElementById("myNumber").placeholder;
x The output is: Quantity
try it"
Related Pages
Reference the HTML: the HTML <the INPUT> placeholder attribute
Input Number Object