The method allows you to get and change the values of form elements. For input elements, this is the value of the value attribute; for select lists - the value of the selected element (in the case of multiple selection - an array of values); in the case of textarea , the .val() method will operate directly on the content of the textarea tag. The method has three use cases:
returns the value of the value attribute of the selected form element. If several elements are selected, the value will be taken from the first one. In the case of a form element, an array of all selected values is returned.
the value attribute will be assigned a value newVal, for all selected elements.
the value attribute will be set to the value returned by the user-defined function. The function is called separately for each of the selected elements. When called, the following parameters are passed to it: index— the position of the element in the set, newVal— the current value of the element’s value attribute.
Examples of using:
Comment: It is important to note that using the .val() method, you will only get the values of the value attribute for the first element of all the selected ones. If you need the values of all elements, then you should use constructs like .map() or .each() .
In actionIf in one of the text fields in which you need to write down your favorite products, the value is different from “Chocolate”, the user will receive a note:
~lt~!DOCTYPE html~gt~ ~lt~html~gt~ ~lt~head~gt~ ~lt~script src="http://code.jquery.com/jquery-latest.js"~gt~~ lt~/script~gt~ ~lt~style~gt~ input( width:240px; margin:3px; ) ~lt~/style~gt~ ~lt~/head~gt~ ~lt~body~gt~ ~lt ~b~gt~Indicate your favorite products:~lt~/b~gt~~lt~br~gt~ ~lt~input type="text" value="Sausage" /~gt~~lt~br~gt~ ~lt~input type="text" value="Chocolate" /~gt~~lt~br~gt~ ~lt~input type="text" value="Beer" /~gt~~lt~br~gt~ ~lt~input type="text" value="Spaghetti" /~gt~ ~lt~div id="state"~gt~ ~lt~/div~gt~ ~lt~script~gt~ $("input:text").val(function(index, x){ if(x != "Шоколад") return "Шоколад лучше чем " + x; else return x; }); ~lt~/script~gt~ ~lt~/body~gt~ ~lt~/html~gt~!}
value add (20)I'm trying to set a value in a textarea field using jquery with the following code:
$("textarea#ExampleMessage").attr("value", result.exampleMessage);
The problem is that after executing this code it doesn't change the text in the textbox?
However, when executing alert($("textarea#ExampleMessage").attr("value")) the new set value is returned?
AnswersOn android .val and .html does not work.
$("#id").text("some value")
did this job.
Textarea does not have a value attribute, its value occurs between tags, i.e.: my text , this is not like an input field(). That's why attr doesn't work :)
The text area doesn't matter. jQuery .html() works in this case
$("textarea#ExampleMessage").html(result.exampleMessage);
Just use textarea Id by type:
$("textarea#samplID").val()
Have you tried the shaft?
textarea doesn't save values as
instead it stores the values in this format:
someString
So attr("value","someString") gets you this result:
someOLDString.
try $("#textareaid").val() or $("#textareaid").innerHTML Use $("#textareaid").innerHTML instead.
To set the textarea value of the HTML encoded (to show as HTML) you should use .html(the_var) but as mentioned, if you try to set it again it may (and probably won't) work.
You can fix this by emptying textarea.empty with .empty() and then setting it again with .html(the_var)
jQuery(function($)( $(".load_html").click(function())( var my_var = $(this).data("my_html"); $("#dynamic_html").html(my_var); ) ); $("#clear_html").click(function())( $("#dynamic_html").empty(); )); )); Google HTML Yahoo HTML Clear HTML
I had the same problem and this solution didn't work, but it worked using html
$("#your_textarea_id").html("some_value");
I think one important aspect is missing:
$("#some-text-area").val("test");
only works if there is an identifier selector (#)
It is possible for a class selector to use a custom value, for example:
$(".some-text-area").value = "test";!}
Using $("textarea#ExampleMessage").html("whatever you want to put here"); might be a good way because .val() might have problems when using data from the database.
For example:
The database field called description has the following value: asjkdfklasdjf sjklñadf . In this case, using .val() to assign a value to textarea can be a tedious task.
Oh come on boys! it only works with
$("#your_textarea_id").val("some_value");
You can even use the snippet below.
$("textarea#ExampleMessage").append(result.exampleMessage);
I had the same question so I decided to try it in current browsers (we're a year and a half after this question) and this (.val) works
$("textarea#ExampleMessage").val(result.exampleMessage);
- FF 3.6
- Opera 11
- Chrome 10
$("textarea#ExampleMessage").val() in jquery is just magic.
You should notice that the textarea tag uses inner html for display rather than a value attribute just like the input tag.
blah blah
You should use
$("textarea#ExampleMessage").html(result.exampleMessage)
$("textarea#ExampleMessage").text(result.exampleMessage)
depends on whether you want to display it as html tags or plain text.
I tried using .val() .text() .html() and had some errors using jQuery to read or set the textarea value...i endup using inline js
$("#message").blur(function() ( if (this.value == "") ( this.value = msg_greeting; ) ));
Just use this code and you will always have a value:
var t = $(this); var v = t.val() || t.html() || t.text();
So it will check val() and set its value. If val() receives an empty string, NULL, NaN os, it will check for html() and then for text()...
I think this should work:
$("textarea#ExampleMessage").val(result.exampleMessage);
There's a problem: I need to generate html code from the contents of a given div. Then I have to put this raw html code into a text box. When I use the $(textarea).val() function like this:
$(textarea).val("some html like bla bla");
$("#idTxtArGenHtml"). val($("idDivMain").html());
I had a problem with some special character (&") when they are between quotas. But when I use the function: $(textarea).html(), the text is fine.
Here is an example form:
Test your newsletter"
Send to :
Subject Enter the subject: *Message Html code: *
javascript/jquery code that doesn't work to fill a textbox:
Function onGenHtml())( $("#idTxtArGenHtml").html($("#idDivMain").html()); )
Complete the solution:
Function onGenHtml())( $("#idTxtArGenHtml").html($("#idDivMain").html()); $("#idTxtArGenHtml").parent().replaceWith(""+$("#idTxtArGenHtml ").parent().html()+""); )
The trick is wrapping your text area with a span tag to help with the replaceWith function. I'm not sure if it's very clean, but it works great by adding the HTML source code to the text field.
If($("#checkboxId").is(":checked"))( alert("Checked"); )
If($("#checkboxId").attr("checked")==true)( alert("Checked"); )
If (document.getElementById("checkboxID").checked)( alert("Checked"); )
I am attempting to set a value in a textarea field using jquery with the following code:
$("textarea#ExampleMessage").attr("value", result.exampleMessage);
The issue is, once this code executes, it is not altering the text in the textarea?
However when performing an alert($("textarea#ExampleMessage").attr("value")) the newly set value is returned?
Have you tried val?
Textarea has no value attribute, its value comes between tags, i.e: my text , it is not like the input field (). That’s why attr doesn’t work :)
$("textarea#ExampleMessage").val() in jquery just a magic.
You should notice that textarea tag using inner html to display and not in value attribute just like input tag.
blah blah
$("textarea#ExampleMessage").html(result.exampleMessage)
$("textarea#ExampleMessage").text(result.exampleMessage)
depend on if you want to display it as html tags or plain text.
I think this should work:
$("textarea#ExampleMessage").val(result.exampleMessage);
Oohh come on boys! it works just with
$("#your_textarea_id").val("some_value");
i had the same question so i decided to try it in the current browsers (we’re one and a half year later in time after this question), and this (.val) works
$("textarea#ExampleMessage").val(result.exampleMessage);
- FF 3.6
- Opera 11
- Chrome 10
I had the same issue and this solution didn’t work but what worked was to use html
$("#your_textarea_id").html("some_value");
There the problem: I need to generate html code from the contain of a given div. Then, I have to put this raw html code in a textarea. When I use the function $(textarea).val() like this:
$(textarea).val(“some html like< input
type=’text’ value=” style=”background: url(‘http://www.w.com/bg.gif’) repeat-x center;” /> bla bla”);
$(‘#idTxtArGenHtml’).val(
$('idDivMain').html());
I had problem with some special character (& ‘ ”) when they are between quot. But when I use the function:
$(textarea).html() the text is ok.
There is an example form:
Test your newsletter"
Send to :
Subject Enter the subject: *Message Html code: *
And javascript/jquery code that don’t work to fill the textarea is:
Function onGenHtml())( $("#idTxtArGenHtml").html($("#idDivMain").html()); )
Finaly the solution:
Function onGenHtml())( $("#idTxtArGenHtml").html($("#idDivMain").html()); $("#idTxtArGenHtml").parent().replaceWith(""+$("#idTxtArGenHtml ").parent().html()+""); )
The trick is wrap your textarea with a span tag to help with the replaceWith function.
I’m not sure if it’s very clean, but it’s work perfect too add raw html code in a textarea.
Text Area doesnot have value. jQuery .html() works in this case
$("textarea#ExampleMessage").html(result.exampleMessage);
textarea doesn't store values as
instead, it stores values in this format:
someString
So attr("value","someString") gets you this result:
someOLDString.
try $("#textareaid").val() or $("#textareaid").innerHTML instead.
I tried with .val() .text() .html() and had some bugs using jQuery to read or set value of a textarea… i endup using native js
$("#message").blur(function() ( if (this.value == "") ( this.value = msg_greeting; ) ));
We can either use .val() or .text() methods to set values. we need to put value inside val() like val(“hello”).
$(document).ready(function () ( $("#submitbtn").click(function () ( var inputVal = $("#inputText").val(); $("#txtMessage").val( inputVal); )); ));
To set textarea value of encoded HTML (to show as HTML) you should use .html(the_var) but as mentioned if you try and set it again it may (and probably) will not work.
You can fix this by emptying the textarea .empty() and then setting it again with .html(the_var)
JQuery(function($)( $(".load_html").click(function())( var my_var = $(this).data("my_html"); $("#dynamic_html").html(my_var); ) ); $("#clear_html").click(function())( $("#dynamic_html").empty(); )); )); Google HTML Yahoo HTML Clear HTML
On android .val and .html didn’t work. $(‘#id’).text(“some value”) did the job.
The accepted answer works for me, but only after I realized I had to execute my code after the page was finished loading. In this situation inline script didn’t work, I guess because #my_form wasn’t done loading yet.
$(document).ready(function() ( $("#my_form textarea").val(""); ));
You can even use the below snippet.
$("textarea#ExampleMessage").append(result.exampleMessage);
When I had JQuery v1.4.4 in the page, neither of these worked. When injecting JQuery v1.7.1 into my page, it worked finally. So in my case, it was my JQuery version that was causing the issue.
id ==> textareaid
======================
Var script1 = document.createElement("script"); script1.src = "http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"; document.body.appendChild(script1); var script2 = document.createElement("script"); script2.type = "text/javascript"; script2.innerHTML = "var $jq171 = $.noConflict();"; document.body.appendChild(script2); $jq171("#textareaid").val("xxx");
Just use textarea Id by its type like it:
$("textarea#samplID").val()
Just use this code and you will always have the value:
Var t = $(this);
var v = t.val() || t.html() || t.text();
So it will check val() and set its value. If val() gets an empty string, NULL, NaN o.s. it will check for html() and then for text()…
Using $("textarea#ExampleMessage").html("whatever you want to put here"); can be a good way, because .val() can have problems when you are using data from database.
A database field named as description has the following value asjkdfklasdjf sjklñadf . In this case using .val() to assign value to textarea can be a tedious job.
add to (20)I'm trying to set a value in a textarea field using jquery with the following code:
$("textarea#ExampleMessage").attr("value", result.exampleMessage);
The problem is that after executing this code it doesn't change the text in the textbox?
However, when executing alert($("textarea#ExampleMessage").attr("value")) the new set value is returned?
AnswersI had the same question so I decided to try it in current browsers (we're a year and a half after this question) and this (.val) works
- FF 3.6
- Opera 11
- Chrome 10
When I had JQuery v1.4.4 on the page, none of them worked. When I entered JQuery v1.7.1 into my page it finally worked. So in my case it was my version of JQuery that was causing the problem.
id ==> textareaid
======================
Var script1 = document.createElement("script"); script1.src = "http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"; document.body.appendChild(script1); var script2 = document.createElement("script"); script2.type = "text/javascript"; script2.innerHTML = "var $jq171 = $.noConflict();"; document.body.appendChild(script2); $jq171("#textareaid").val("xxx");
Just use textarea Id by type:
$("textarea#samplID").val()
To set the textarea value of the HTML encoded (to show as HTML) you should use .html(the_var) but as mentioned, if you try to set it again it may (and probably won't) work.
You can fix this by emptying textarea.empty with .empty() and then setting it again with .html(the_var)
jQuery(function($)( $(".load_html").click(function())( var my_var = $(this).data("my_html"); $("#dynamic_html").html(my_var); ) ); $("#clear_html").click(function())( $("#dynamic_html").empty(); )); )); Google HTML Yahoo HTML Clear HTML
textarea doesn't save values as
instead it stores the values in this format:
someString
So attr("value","someString") gets you this result:
someOLDString.
try $("#textareaid").val() or $("#textareaid").innerHTML Use $("#textareaid").innerHTML instead.
$("textarea#ExampleMessage").val() in jquery is just magic.
You should notice that the textarea tag uses inner html for display rather than a value attribute just like the input tag.
blah blah
You should use
$("textarea#ExampleMessage").html(result.exampleMessage)
$("textarea#ExampleMessage").text(result.exampleMessage)
depends on whether you want to display it as html tags or plain text.
There's a problem: I need to generate html code from the contents of a given div. Then I have to put this raw html code into a text box. When I use the $(textarea).val() function like this:
$(textarea).val("some html like bla bla");
$("#idTxtArGenHtml"). val($("idDivMain").html());
I had a problem with some special character (&") when they are between quotas. But when I use the function: $(textarea).html(), the text is fine.
Here is an example form:
Test your newsletter"
Send to :
Subject Enter the subject: *Message Html code: *
javascript/jquery code that doesn't work to fill a textbox:
Function onGenHtml())( $("#idTxtArGenHtml").html($("#idDivMain").html()); )
Complete the solution:
Function onGenHtml())( $("#idTxtArGenHtml").html($("#idDivMain").html()); $("#idTxtArGenHtml").parent().replaceWith(""+$("#idTxtArGenHtml ").parent().html()+""); )
The trick is wrapping your text area with a span tag to help with the replaceWith function. I'm not sure if it's very clean, but it works great by adding the HTML source code to the text field.
Using $("textarea#ExampleMessage").html("whatever you want to put here"); might be a good way because .val() might have problems when using data from the database.
For example:
The database field called description has the following value: asjkdfklasdjf sjklñadf . In this case, using .val() to assign a value to textarea can be a tedious task.
I think one important aspect is missing:
$("#some-text-area").val("test");
only works if there is an identifier selector (#)
It is possible for a class selector to use a custom value, for example:
$(".some-text-area").value = "test";!}
On android .val and .html does not work.
$("#id").text("some value")
did this job.
Textarea does not have a value attribute, its value occurs between tags, i.e.: my text , this is not like an input field(). That's why attr doesn't work :)
The text area doesn't matter. jQuery .html() works in this case
$("textarea#ExampleMessage").html(result.exampleMessage);
Have you tried the shaft?
$("textarea#ExampleMessage").val(result.exampleMessage);
I think this should work:
$("textarea#ExampleMessage").val(result.exampleMessage);
The accepted answer works for me, but only after I realized that I should execute my code after the page has finished loading. In this situation the inline script didn't work, I think because #my_form wasn't loaded yet.
$(document).ready(function() ( $("#my_form textarea").val(""); ));
Just use this code and you will always have a value:
var t = $(this); var v = t.val() || t.html() || t.text();
So it will check val() and set its value. If val() receives an empty string, NULL, NaN os, it will check for html() and then for text()...
We can use the .val() or .text() methods to set the values. we need to put the value inside val() like val("hello").
$(document).ready(function () ( $("#submitbtn").click(function () ( var inputVal = $("#inputText").val(); $("#txtMessage").val( inputVal); )); ));
JQueryjQuery makes ridiculously long JavaScript commands like getElementByHerpDerp shorter and cross-browser.
AngularJSAngularJS allows you to create custom HTML tags/attributes that work well with dynamic web applications (since HTML was designed for static pages).
Edit:Saying "I have a jQuery background, how can I think in AngularJS?" it's like saying "I have an HTML background, how can I think in JavaScript?" The fact that you're asking a question shows that you most likely don't understand the underlying purposes of these two resources. That's why I decided to answer the question by simply stating the fundamental difference rather than going into a list that says "AngularJS uses directives, whereas jQuery uses a CSS selector to create a jQuery object that does this, etc." , This question does not require a long answer.
jQuery is a way to make JavaScript programming easier in the browser. Shorter, cross-browser commands, etc.
AngularJS extends HTML code so you don't have to host everything you need to create an application. This makes HTML actually work for applications rather than what it is intended for, which is static, educational web pages. This is achieved using JavaScript, but at root it is an extension of HTML, not JavaScript.
