访问角度js 1中的文本框值问题？

Question

我呼吁NG-KEYUP功能，并试图通过实际上未得到通过的文本框的值，并得到“未定义”可变

HTML代码

<md-input-container class="md-icon-float md-block"> 
       <label >First Name </label> 
       <md-icon md-font-icon="icon-account" class="name"></md-icon> 
       <input type="fname" id="fname" name="fname" ng-value = "{{vm.form.fname}}" ng-model="vm.contact.fname" ng-pattern="/^[a-zA-Z ]{2,30}$/" type="text" ng-keyup = "vm.firstLetterCaps('fname',vm.form.fname)" required> 
       <div ng-messages="contactForm.fname.$error" role="alert"> 
         <div ng-message="required"> 
          <span>First name is required</span> 
         </div> 
         <div ng-message="pattern"> 
          <span>First name must be a valid </span> 
         </div> 
     </div> 
</md-input-container> 

控制器代码功能

function firstLetterCaps(textboxid, str){ 
      console.log(textboxid) 
      console.log(str) 
      // string with alteast one character 
       if (str && str.length >= 1) 
       {  
        var firstChar = str.charAt(0); 
        var remainingStr = str.slice(1); 
        str = firstChar.toUpperCase() + remainingStr; 
       } 
       if() 
       document.getElementById(textboxid).value = str; 
      } 

Answer 1

<input type="fname" id="fname" name="fname" ng-value = "{{vm.form.fname}}" 
    ng-model="vm.contact.fname" ng-pattern="/^[a-zA-Z ]{2,30}$/" type="text" 
    ng-keyup = "vm.firstLetterCaps('fname',vm.form.fname)" required> 

您可以直接通过您的ng-model本身，象下面这样：

ng-keyup = "vm.firstLetterCaps('fname',vm.contact.fname)"