我正在开发Angular \ Ionic 3项目,我想要一个正则表达式来验证输入框中输入的电话号码。目前我可以限制用户只输入数字,但我想要3个数字,然后一个空间然后7位数...... 例如)300 1234567 以下是我的HTML代码:
<ion-input type="tel"
(input)="onKeyPress($event,MobileNoDisplay)"
maxlength="11"
placeholder="300 1122345"
[value]="MobileNoDisplay"
[(ngModel)]="MobileNoDisplay">
</ion-input>
OnkeyPress功能代码:
onKeyPress(event,val: string) {
if (/[\D]/.test(val) ) {
this.MobileNoDisplay = val.replace(/[\D]+/g, '');//this will remove any non-
numerical value
console.log("MobileNoDisplay-->" + this.MobileNoDisplay);
}
else{
console.log("ELSE CHECK");
}
event.stopPropagation();
}
}
答案 0 :(得分:0)
这无疑是您要求的纯正regexp解决方案,但您的代码示例表明它没有必要:
// first check if the value does not match the pattern (see the exclamation mark)
if (!/^\d{3} \d{7}$/.test(val)) {
// first remove non-digits
var numeric = val.replace(/\D/g, '');
// get the first 3 chars, and if the filtered number is longer then 3, add a space, then add the remaining 7 chars, beginning on the fourth char (index 3)
this.MobileNoDisplay = numeric.substr(0, 3)
+ (numeric.length > 3 ? ' ' + numeric.substr(3, 7) : '');
console.log("MobileNoDisplay-->" + this.MobileNoDisplay);
}