English 使用jQuery获取和呈现输入值的方法有哪些？
这是一个：
<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.3.min.js" ></script>
<script type="text/javascript">
$(document).ready(function(){
$("#txt_name").keyup(function(){
alert($(this).val());
});
})
</script>
<input type="text" id="txt_name" />
You have to use various ways to get current value of an input element.
METHOD - 1
If you want to use a simple .val(), try this:
<input type="text" id="txt_name" />
Get values from Input
// use to select with DOM element.
$("input").val();
// use the id to select the element.
$("#txt_name").val();
// use type="text" with input to select the element
$("input:text").val();
Set value to Input
// use to add "text content" to the DOM element.
$("input").val("text content");
// use the id to add "text content" to the element.
$("#txt_name").val("text content");
// use type="text" with input to add "text content" to the element
$("input:text").val("text content");
METHOD - 2
Use .attr() to get the content.
<input type="text" id="txt_name" value="" />
I just add one attribute to the input field. value="" attribute is the one who carry the text content that we entered in input field.
$("input").attr("value");
METHOD - 3
you can use this one directly on your input element.
$("input").keyup(function(){
alert(this.value);
});
I think this function is missed here in previous answers