如何包装文本节点中的每个字符 <li> ？

Question

I want to split a string value in a single digits and wrap() it in <li></li> . I am trying to achieve this goal but fail to do this following is my code:

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script> $(document).ready(function(e) { var str = $('#number').html(); var spl = str.split(''); var len = spl.length; var i = 0; setInterval(function() { if (i <= len) { $('#number').wrap('<li>' + spl[0] + '</li>') } i++; }, 200) }) </script> <div id="number">123456 as</div> 

Answer 1

<script>
$(document).ready(function(e) {
    var str = $('#number').html();
    var spl = str.split('');
    var len = spl.length;
    var i = 0;
    setInterval(function(){

        if(i <= len )
        {
            $('#number').append('<li>'+spl[i]+'</li>')

            }
        i++;

        },200)
})
</script>

reference append

Answer 2

here spl[0] this always selects the first index of array (split)... use spl[i]

try this

 var str = $('#number').html();
 var spl = str.split('');
 var len = spl.length;
 var i = 0;

 setInterval(function () {

 if (i < len) {
     if (spl[i] != " ") { //checking for the space here
         $('#number').append('<li>' + spl[i] + '</li>')
                   //-^^^^^^----------^^^^^^-----here
     }
 }
 i++;

 }, 200)

fiddle here

Answer 3

If you're trying to move each character from the text into a <li> , then here's an alternative solution that splits the text nodes in place and wraps them:

//- Get a reference to the raw text node
var txt = $('#number').contents()[0];

setTimeout(function repeat(){
    if (txt.nodeValue.length) {
        //- Split the text node after the first character
        txt = txt.splitText(1);

        //- txt is now the latter text node, so wrap the former with a <li>
        $(txt.previousSibling).wrap('<li>');

        //- Rinse and repeat
        setTimeout(repeat, 200)
    }
},200);

http://jsfiddle.net/9wRbe/

Also, I swapped your setInterval for a setTimeout because your timer would have run indefinitely, whereas this stops when the sequence is complete.

Here's one splitting backwards for fun:

var txt = $('#number').contents()[0];

setTimeout(function (){
    if (txt.nodeValue.length) {
        $(txt.splitText(txt.nodeValue.length - 1)).wrap('<li>');

        setTimeout(arguments.callee, 200)
    }
},200);

http://jsfiddle.net/9wRbe/1/

See also:

• https://developer.mozilla.org/en-US/docs/Web/API/Text.splitText

Answer 4

try this:

var str = $('#number').html();
    var spl = str.split('');
    var len = spl.length;
    var i = 0;
    setInterval(function(){

        if(i <= len )
        {
            if(spl[i] !== undefined && spl[i] !== " "){
                $('#number').wrap('<li>'+spl[i]+'</li>')
            }
        }
        i++;
    },200);

working fiddle here: http://jsfiddle.net/n5Brh/1/

Answer 5

DO NOT wrap with html content only html tag is allowed in wrap()

here is your ans jsfiddle

$(document).ready(function(e) {
    var str = $('#number').html();
    var spl = str.split(' ');
    var len = spl.length;
    var i = 0;


        if(i <= len )
        {
            $('#number').wrap('<li id="dd"> </li>')

            }
        i++;

       $('#number').text(spl[0]);
})