jquery实现判断输入文字个数的代码

js代码部分

<script type="text/javascript">
$(function() {

function albumName() {
var text = $("#album_name")val();
var counter = textlength;
$("#numtj var")text(counter);
$(document)keyup(function() {
var text = $("#album_name")val();
var counter = textlength;
$("#name_word")text(counter);
});
}
});
</script>

html部分

<input type="text" maxlength="" class="int_txt" name="album_name" id="album_name">
<span class="count_txt"><span id="name_word"></span>/</span>

贴张图看下效果

js代码部分

<script type="text/javascript">
$(function() {

function albumName() {
var text = $("#album_name")val();
var counter = textlength;
$("#numtj var")text(counter);
$(document)keyup(function() {
var text = $("#album_name")val();
var counter = textlength;
$("#name_word")text(counter);
});
}
});
</script>

html部分

<input type="text" maxlength="" class="int_txt" name="album_name" id="album_name">
<span class="count_txt"><span id="name_word"></span>/</span>

贴张图看下效果

js代码部分

<script type="text/javascript">
$(function() {

function albumName() {
var text = $("#album_name")val();
var counter = textlength;
$("#numtj var")text(counter);
$(document)keyup(function() {
var text = $("#album_name")val();
var counter = textlength;
$("#name_word")text(counter);
});
}
});
</script>

html部分

<input type="text" maxlength="" class="int_txt" name="album_name" id="album_name">
<span class="count_txt"><span id="name_word"></span>/</span>