使用Jquery更新Ng模式

Question

Can someone help me how to update the Ng-Pattern using Jquery

I have gone through below question but didn't help me(Most of the Question are related to updating to dynamic values using Angular JS)

1. Question 1
2. Question 2
3. Question 3

HTML

<div class="col-md-1" style="width: 50px;" id="hourmain">
    <span ng-show="addItem.Hour.$error.pattern">The number must be between 0-4</span>
    <input class="form-control" type="text" name="Hour" ng-model="form.Hour" placeholder="Hour" required="required" ng-pattern="/^[0-4]+(\.[5]{1})?$/" step="0.5" min="0" max="3" maxlength="3" id="hour">
</div>

Now using Jquery How Can I update the ng-pattern value to ng-pattern="/^[0-9]+(\\.[5]{1})?$/"

Answer 1

In jQuery , you can grab the specific element using:

var input = $('input[name="Hour"]');

and then set the value of the ng-pattern attribute, using:

input.attr('ng-pattern', '/^[0-9]+(\.[5]{1})?$/');

Working Example:

 $(document).ready(function(){ var input = $('input[name="Hour"]'); input.attr('ng-pattern', '/^[0-9]+(\\.[5]{1})?$/'); console.log('input ng-pattern is now: ' + input.attr('ng-pattern')); }); 

 <div class="col-md-1" style="width: 50px;" id="hourmain"> <span ng-show="addItem.Hour.$error.pattern">The number must be between 0-4</span> <input class="form-control" type="text" name="Hour" ng-model="form.Hour" placeholder="Hour" required="required" ng-pattern="/^[0-4]+(\\.[5]{1})?$/" step="0.5" min="0" max="3" maxlength="3" id="hour" /> </div> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 

---

Alternatively, in vanilla javascript , you can grab the specific element using:

var input = document.querySelector('input[name="Hour"]');

and then set the value of the ng-pattern attribute, using:

input.setAttribute('ng-pattern', '/^[0-9]+(\.[5]{1})?$/');

Working Example:

 var input = document.querySelector('input[name="Hour"]'); input.setAttribute('ng-pattern', '/^[0-9]+(\\.[5]{1})?$/'); console.log('input ng-pattern is now: ' + input.getAttribute('ng-pattern')); 

 <div class="col-md-1" style="width: 50px;" id="hourmain"> <span ng-show="addItem.Hour.$error.pattern">The number must be between 0-4</span> <input class="form-control" type="text" name="Hour" ng-model="form.Hour" placeholder="Hour" required="required" ng-pattern="/^[0-4]+(\\.[5]{1})?$/" step="0.5" min="0" max="3" maxlength="3" id="hour" /> </div>