打字稿错误“‘HTMLElement’类型上不存在属性‘value’”、“‘Element’类型上不存在属性‘onclick’”

Question

我试图放入打字稿文件，然后这些“属性‘值’在类型‘HTMLElement’上不存在”、“重复函数实现”。和“属性‘onclick’在‘元素’类型上不存在”作为编译错误出现在我的屏幕上，但当我尝试在 javascript 文件中运行时，它运行得很好。 https://jsfiddle.net/chrismontage/onh51g93/12/

<label for = "password">New Password</label>
<input type="password" class = "input" id = "password1" value="">
<label for = "cnfm-password">Confirm Pasword</label>
<input type="password" class = "input" id = "password2">
<input onclick = "verifyPassword()" type="submit" value = "Save Changes"class = "btn" id = "myBtn">
          
 <!-- The Modal -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <div class="modal-header">
      <img src="/images/logo.png" alt="SAMPLE" width="120" class = "mx-auto">
      <span class="close">&times;</span>
    </div>
    
    <div class="modal-body">
      <h4 class = "text-center"><span id = "message1"></span></h4>
    </div>
    <div class="modal-footer mx-auto">
      <button class = "btn" id = "confirm">Okay</button>

    </div>
  </div>
</div>

.ts 文件

function verifyPassword(){
    var pw1 = document.getElementById("password1");
    var pw2 = document.getElementById("password2");
    
    // Get the modal
    var modal = document.getElementById("myModal");
    
    // Get the button that opens the modal
    var btn1 = document.getElementById("myBtn");
    
    var confirm = document.getElementById("confirm");
    
    // Get the <span> element that closes the modal
    var span = document.getElementsByClassName("close")[0];
    
    
    btn1.onclick = function () {
        
        modal.style.display = "block";
    
        //check empty password field
    
        if(pw1.value == "") {
            document.getElementById("message1").innerHTML = "Please put your new password!";
            return false;
        }
    
        //minimum password length validation
        if(pw1.value.length < 8) {
            document.getElementById("message1").innerHTML = "Password length must be atleast 8 characters";
            return false;
        }
    
        //maximum length of password validation
        if(pw1.value.length > 15) {
           document.getElementById("message1").innerHTML = "Password length must not exceed 15 characters";
           return false;
        } else {
           if(pw1.value == pw2.value){
               document.getElementById("message1").innerHTML=  "Passwords match!";
           }
        
           else {
               document.getElementById("message1").innerHTML=  "Passwords not match!";
           }
        }
    
    }
    
    confirm.onclick = function () {
        modal.style.display = "none";
    }
    
    // When the user clicks on <span> (x), close the modal
    span.onclick = function() {
        modal.style.display = "none";
      }
    
      // When the user clicks anywhere outside of the modal, close it
    window.onclick = function(event) {
        if (event.target == modal) {
          modal.style.display = "none";
    }
    }
}

/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  padding-top: 100px; /* Location of the box */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content */
.modal-content {
  position: relative;
  background-color: #fefefe;
  margin: auto;
  padding: 0;
  border: 1px solid #888;
  max-width: 40%;
  box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
  -webkit-animation-name: animatetop;
  -webkit-animation-duration: 0.4s;
  animation-name: animatetop;
  animation-duration: 0.4s
}

/* Add Animation */
@-webkit-keyframes animatetop {
  from {top:-300px; opacity:0} 
  to {top:0; opacity:1}
}

@keyframes animatetop {
  from {top:-300px; opacity:0}
  to {top:0; opacity:1}
}

/* The Close Button */
.close {
  color: white;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: $color5;
  text-decoration: none;
  cursor: pointer;
}

.modal-header {
  
  background-color: $color1;
  color: white;
  text-align: center;
}

.modal-header h2 {
    color: $color1;
    text-align: center;
}

.modal-body {
    padding: 2px 16px;
  }

  .modal-body h4 {
      font-family: $font1;
      font-weight: normal;
      color: $color4;
      font-size: 20px;
  }

.modal-footer {
  padding: 2px 16px;
  color: white;
}

.modal-footer .btn {
    background-color: $color1;
    font-family: $font1;
    font-weight: normal;
    color: $color3;
}

.modal-footer .btn:hover{
    color: $color5;
}

Answer 1

您的 Typescript 项目中似乎缺少 DOM 类型声明。你也可以发布你的

tsconfig.json

吗？

如果不存在，您可能需要将

dom

包含到您的

tsconfig.json

文件中。

"lib": ["dom"]

Answer 2

您是否尝试遵循：https://stackoverflow.com/a/12990166/13309686

代码如下所示：

function verifyPassword(){
    var pw1 = (<HTMLInputElement>document.getElementById("password1")).value;
    var pw2 = (<HTMLInputElement>document.getElementById("password2")).value;
    
    // Get the modal
    var modal = <HTMLInputElement>document.getElementById("myModal");
    
    // Get the button that opens the modal
    var btn1 = <HTMLInputElement>document.getElementById("myBtn");
    
    var confirm = <HTMLInputElement>document.getElementById("confirm");
    
    // Get the <span> element that closes the modal
    var span = <HTMLInputElement>document.getElementsByClassName("close")[0];
    
    
    btn1.onclick = function () {
        
        modal.style.display = "block";
    
        //check empty password field
    
        if(pw1 == "") {
            document.getElementById("message1").innerHTML = "Please put your new password!";
            return false;
        }
    
        //minimum password length validation
        if(pw1.length < 8) {
            document.getElementById("message1").innerHTML = "Password length must be atleast 8 characters";
            return false;
        }
    
        //maximum length of password validation
        if(pw1.length > 15) {
           document.getElementById("message1").innerHTML = "Password length must not exceed 15 characters";
           return false;
        } else {
           if(pw1 == pw2){
               document.getElementById("message1").innerHTML=  "Passwords match!";
           }
        
           else {
               document.getElementById("message1").innerHTML=  "Passwords not match!";
           }
        }
    
    }
    
    confirm.onclick = function () {
        modal.style.display = "none";
    }
    
    // When the user clicks on <span> (x), close the modal
    span.onclick = function() {
        modal.style.display = "none";
      }
    
      // When the user clicks anywhere outside of the modal, close it
    window.onclick = function(event) {
        if (event.target == modal) {
          modal.style.display = "none";
    }
    }
}

Answer 3

在 Jest 或 React 或 NextJs 中将您的元素声明为

HTMLInputElement

类型：

const input: HTMLInputElement = screen.getByTestId("Input");