javascript - ExtJs 更改创建输入的 maskRe

Question

是否可以更改创建的输入字段的 maskRe？如果是，怎么办？

{
  xtype: 'textfield',
  maskRe: /\d{0,5}/i
}

Answer 1

是的，而且您已经在这样做了。

但是 maskRe 仅应用于新 Angular 色。来自文档:

An input mask regular expression that will be used to filter keystrokes (character being typed) that do not match. Note: It does not filter characters already in the input.

这意味着maskRe不能用于一定的长度要求；您可以使用 maxLength 来实现这一点。

如果您想即时更改它，则没有记录的方法可以执行此操作。在 6.0.1 中，根据代码，使用 textbox.maskRe = newValue 就足够了，因为 filterKeys function看起来如下:

filterKeys : function(e){
    /*
     * Current only FF will fire keypress events for special keys.
     * 
     * On European keyboards, the right alt key, Alt Gr, is used to type certain special characters.
     * JS detects a keypress of this as ctrlKey & altKey. As such, we check that alt isn't pressed
     * so we can still process these special characters.
     */
    if ((e.ctrlKey && !e.altKey) || e.isSpecialKey()) {
        return;
    }
    var charCode = String.fromCharCode(e.getCharCode());
    if (!this.maskRe.test(charCode)) {
        e.stopEvent();
    }
}