从 event.target 获取子元素

Question

event.target returns the DOM element an action was performed on. How do I get a specific child element from the output?

Here's my form (with Angular markup):

<form (ngSubmit)="onSubmit($event)" id="kekpek">
  <div class="form-group">
    <label>Example file input</label>
    <input type="file" class="form-control-file" #fileupload [(ngModel)]="myFile" name="myFile" (change)="fileChange($event)"/>
  </div>
  <button type="submit" class="btn btn-success">Submit</button>
</form>

It fires the function:

onSubmit(event) {
    console.log(event.target);
}

Which output the entire form. I need to access the input element in the onSubmit() function.

Answer 1

You can use the documentElement.querySelector() method.

function onSubmit(event){
    console.log(event.target.querySelector('input'));

}

You can use any valid CSS query to get the element you need

Answer 2

This should help

onSubmit(event) {
    console.log(event.target.firstChild.children[1]);
}