从类中的purejs中显示第1个2个字符，其余的隐藏

Question

I want to show the first 2 letters ie, En . I want to use Pure JS to finish this. There is no changes whatsoever. I have tried to add the JS in both header and footer, still no change on the site.

HTML:

<a href="#" class="myclassname">English</a>

JS:

var i;
var sheb = document.getElementsByClassName("myclassname");
for(i=0;i<sheb.length;i++) {
  if(sheb[i].className == 'myclass') {
    sheb[i].innerHTML = sheb[i].innerHTML.substring(0,3);
  }
}

Answer 1

You made a mistake in your if statement; you check if the className is myclass instead of myclassname . Also, you should use substring(0,2) instead of substring(0,3) .

Apart from those 2 mistakes, it works fine:

 var i; var sheb = document.getElementsByClassName("myclassname"); for(i=0;i<sheb.length;i++) { if(sheb[i].className == 'myclassname') { sheb[i].innerHTML = sheb[i].innerHTML.substring(0,2); } } 

 <a href="#" class="myclassname">English</a> 

Answer 2

You have two issues:

There is a mismatch between the class name used in HTML ( myclassname ) and in JavaScript ( myclass ).

Then your are taking up to 3 character with .substring(0,3) . Here the second argument ( 3 ) is the length to take from the string. You have to change that to .substring(0,2) .

Try the following way:

 var i; var sheb = document.getElementsByClassName("myclass"); for(i=0;i<sheb.length;i++) { if(sheb[i].className == 'myclass') { sheb[i].innerHTML = sheb[i].innerHTML.substring(0,2); } } 

 <a href="#" class="myclass">English</a>