Js- keyboard return search enter

This problem is often used in mobile version.

<div class=”sousuo”>
        <input type=”text” placeholder=”Please enter the keyword “id=” sousuo of the title of the article. onkeydown=”entersearch()”/>
</div>

css:

#sousuo {

1. display: block;
2. width: 100%;
3. padding-left: 10%;
4. background: #f2f2f2;
5. height: 3.5rem;
6. border: none;
7. outline: none;
8. border-radius: .5rem;
9. background-image: url(../images/Icon_sousuo.png);
10. background-size: 1.8rem;
11. background-repeat: no-repeat;
12. background-position: .8rem .75rem;

}

 

js：

entersearch(){
      if (event.keyCode == 13)
                  alert(“Enter search “”
}