如何限制ext js文本字段中的特定字符？

Question

how to restrict specific characters(like apostrophe, !, ^ etc) in ext js textfield to enter with key strokes? I used below code which allows only mentioned characters

{
xtype:"textfield",
maskRe: new RegExp("[a-zA-Z1-9_\s@#$&~`]+$"),
allowBlank : false
}

Answer 1

To specify restricted characters instead of allowed characters simply prepend a ^ inside the square brackets, which means "any character except...":

maskRe: /[^!\^]/

(= any character except ! and ^ )

Also see this fiddle .

Also note that it's not necessary to use operators like + , ^ and $ because the regular expression used with maskRe is tested against each single character about to be entered, not against the value of the field.

Answer 2

您需要添加行^ anchor的开头，以便检查确切的字符串匹配，并且还需要再次转义反斜杠。

new RegExp("^[a-zA-Z1-9_\\s@#$&~`]+$")

Answer 3

You can refer to vtype properties for the Ext Js component TextField. vtype