I want to scan a barcode in an html textfield but only need a few characters from that barcode.. I've tried str.substring using the code below. But I want to replace 'helloworld' with the value from the textbox.
<script>
function myFunction() {
var id = "helloworld";
var res = id.substring(1, 7);
document.getElementById("out").innerHTML = res;
}
</script>
Are you trying to get a value from a text box?
HTML: index.html
<!DOCTYPE html>
<html>
<head>
<title>
Barcode Example
</title>
<link href="script.js" rel="JavaScript" type="text/js" />
</head>
<body>
<input type="text" name="barcode" id="textbox" onkeyup="validateBarcode()" />
<br />
<span id="barcode_error" style="display: none; color: red;">
Barcode must only have numbers
</span>
<br />
<button id="submit_btn" onClick="myFunction()">
Submit
</button>
</body>
</html>
If so, here's the code:
JavaScript: myscript.js
var barcode;
var textbox;
function myFunction() {
barcode = document.getElementById('textbox').value;
document.getElementById('out').innerHTML = "Barcode: " + barcode + "<br />";
// ^ br is to make it have multiple barcodes listed
}
function validateBarcode() {
textbox = document.getElementById('textbox');
if (isNaN(parseFloat(textbox.value))) {
document.getElementById('textbox').style.color = 'red';
document.getElementById('barcode_error').style.display = 'block';
document.getElementById('submit_btn').diabled = true;
}
else {
document.getElementById('textbox').style.color = 'black';
document.getElementById('barcode-error').style.display = 'none';
document.getElementById('submit_btn').diabled = false;
}
}
Hope this helps :-)
Related
I would like to be able to type a word or name into an box, click a generate button and have some of the letters or words changed into a new box.
For example:
John Smith > Juhn Smith
(change the 'o' to 'u' making Juhn Smith)
or
John Smith > Ron Smith
(change whole words)
I have tried looking at strings and replacewith() etc but have struggled to find anything suitable especially nothing using input boxes.
This is an example close to what i mean but much more complex:
http://anu.co.uk/brazil/
Thanks
#James When asking for help, next time try to do it yourself. This is an HTML page showing your example. Save this as myPage.html. Then open the file in a browser.
<!DOCTYPE html>
<html>
<meta charset="ISO-8859-1">
<head>
<title>Replace web page</title>
</head>
<script type="text/javascript" >
// this gets called by pressing the button
function myFunction() {
var first = document.getElementById("foreName");
var last = document.getElementById("lastName");
// now change 'o' to 'u' for each name part
var changedFirst = myChange(first.value);
var changedLast = myChange(last.value);
// now move it to another element
var resultBox = document.getElementById("resultBox");
resultBox.innerHTML = "" + changedFirst + " " + changedLast;
}
// this is a function to search a string and replace with a substitute
function myChange(str) {
var arr = str.split('');
var result = "";
for(var i=0; i < arr.length; i++) {
if (arr[i] == 'o') // if it's an o
result += 'u'; // replace it with 'u'
else
result += arr[i];
}
return(result);
}
</script>
<body>
<p> This is an example of inputting text, changing it, then displaying it into another item</p>
First Name: <input type="text" name="foreName" id="foreName" maxlength=100 value="">
Last Name: <input type="text" name="lastName" id="lastName" maxlength=100 value="">
<p>
<input type="button" id="inButton" name="inButton" value="Click Me" onclick="myFunction()" >
</p>
<p>
<textarea rows="1" cols="50" id="resultBox"></textarea>
</p>
</body>
</html>
I am working on a project where the client's requirement is to add a dynamic text box. I made the dynamic text box but I'm not getting the unique name of the text box.
Here is my code:
<script type="text/javascript">
function addfieldset() {
var namefieldset = document.getElementById("name").cloneNode(true);
document.getElementById("names").appendChild(namefieldset);
}
function deletefieldset(e) {
var namefieldset = e.parentNode;
namefieldset.parentNode.removeChild(namefieldset);
}
</script>
<body>
<%! public static int i = 1;%>
<% if (i > 0) { %>
<div id="names"><div id="name"><% out.print(i);%>Name: <input name="namefield<%= i%>" type="text"/>delete</div></div>
<input id="addnamebtn" type="button" value="Add Name" onclick="addfieldset()"/>
<% i++;
}%>
</body>
You are mixing two different codes. The key is to realize, where and when each code is executed - JSP on the server when the page is requested and rendered (i.e. before the response is sent to the browser) and Javascript in the browser, after the browser receives the already generated response.
I.e. you have to change the name of the new text field in the addfieldset() function (which means you have to have a counter, how many text fields there already is).
The java code in scriptlet is executed on the server side. Hence, cloning it again through Javascript will not execute the scriptlet again.
An another approach of what you are trying to achieve will be to store the count variable in javascript.
var count = 1;
function addfieldset() {
count++;
var namefieldset = document.getElementById("name").cloneNode(true);
var textField = namefieldset.getElementsByTagName('input')[0];
textField.setAttribute("name", "namefield" + count);
textField.value = "";
document.getElementById("names").appendChild(namefieldset);
}
function deletefieldset(e) {
var namefieldset = e.parentNode;
namefieldset.parentNode.removeChild(namefieldset);
}
<body>
<div id="names">
<div id="name">
<span>Name:</span>
<input name="namefield1" type="text" />
delete
</div>
</div>
<input id="addnamebtn" type="button" value="Add Name" onclick="addfieldset()" />
</body>
try this JavaScript and HTML
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<script type="text/javascript">
var i = 0;
function generateRow() {
i++;
var d = document.getElementById("div");
d.name = "food";
d.innerHTML += "<p>name"+i+" :<input type='text' name='name" + i + "' /> <a href='#' onclick='deletefieldset(this)'>delete</a></p>";
}
function deletefieldset(e) {
var namefieldset = e.parentNode;
namefieldset.parentNode.removeChild(namefieldset);
}
function onLoad() {
generateRow();
}
window.onload = onLoad;
</script>
<body>
<div id="div"></div>
<p>
<input type="button" id="addnamebtn" value="Add Name" onclick="generateRow()" />
</p>
</body>
</html>
I am developing a web application in which I which I have a JavaScript array and I want this array in my JSP page and iterate it save the data in database.
var value = response;
for (var key in value) {
if (value.hasOwnProperty(key)) {
alert(key + " -> " + value[key]);
var sample = new Array();
sample=value[key];
console.log(sample);
// document.getElementById('');
}
}
});
I want this data on my JSP page is it possible. If it is possible, then how?
You can have javascript in jsp but that will always execute on client side. So if you want to save some stuff on trigger of some event inside browser you can do that by making ajax call or form submission. Ajax is preferred way because its faster and better experience for user
But if you have intention of execution of javascript on server side thats not possible
Java script client side script whereas jsp is server side script so you can't simply do this.
What you can do is submit the calculated variable from javascript to server by form-submission, or using URL parameter or using AJAX calls and then you can make it available on server to store in database.
Client Side:
<script type="text/javascript">
var n = document.getElementById("data");
var f=new Array( "apple", "orange", "mango" );
n.value = f;
</script>
<form action="Your_JSP.jsp" method="POST">
<input type="hidden" id="data" name="data" value="" />
<input type="submit" />
</form>
Server Side:
<%
String val = request.getParameter("data");
String aa[]=val.split(",");
for(String x : aa )
out.println(x);
//now hereyou can use aa array tostore in database or do whatever you want
%>
Try this if you have two different jsp:
first.jsp
<script>
var response = [];
...
var put = function(form) {
form.resp.value = response.join(','); //using comma as separator
};
</script>
<form onsubmit='put(this)' method='next.jsp' method='post'>
<input type='hidden' name='resp' />
<button>Submit</button>
</form>
next.jsp
<%
String[] resp = request.getParameter("resp").split(",");
%>
Response is: ${param.resp} <!-- debugging -->
yes , its possible to do that. you can show array in HTML tag
<!DOCTYPE html>
<html>
<head>
<script>
var value=response;
for (var key in value) {
if (value.hasOwnProperty(key)) {
alert(key + " -> " + value[key]);
var sample = new Array();
sample=value[key];
console.log(sample);
// do here as
document.getElementById("array").innerHTML = sample;
// here array is <p> tag in html and sample is array which will be shown in jsp page.
}
}
</script>
</head>
<body>
<form action="get.jsp" method="POST">
<p id="array" name="array" type="hidden"></p>
<input type="submit" />
</body>
</html>
in get.jsp you will able to get value from array as:
<%
String []array = request.getParameter("array").split(",");
//this String array you can use to store data in DB
%>
I'm very very very new to d3, and I have a problem getting a line graph with json.
In my ReportBucketDAO.java, I generate out json with my database data.
while (rs.next())
{
String currency = rs.getString("currency");
Timestamp pointDateTimeTs = rs.getTimestamp("point_datetime");
String pointDateTime = pointDateTimeTs.toString();
pointDateTime = pointDateTime.substring(0, pointDateTime.indexOf('.'));
double pointValue = rs.getDouble("sum(`point_value`)");
org.json.JSONObject jobj = new org.json.JSONObject();
jobj.put("currency", currency);
jobj.put("pointDateTime", pointDateTime);
jobj.put("pointValue", pointValue);
jArray.add(jobj);
}
The json string is:
[{"pointValue":274,"pointDateTime":"2015-01-20 00:00:00","currency":"GBP"},
{"pointValue":571,"pointDateTime":"2015-01-20 00:00:00","currency":"SGD"},
{"pointValue":561,"pointDateTime":"2015-01-20 00:00:00","currency":"USD"}]
I also had a jsp called getVolumeData.jsp which allow me to save the above json to "data.json"
<%#page import="java.util.ArrayList"%>
<%#page import="com.ach.model.ReportBucket"%>
<%#page import="com.ach.model.ReportBucketDAO"%>
<%#page import="java.io.*"%>
<%#page import="org.json.simple.*"%>
<%
ReportBucketDAO rbDAO = new ReportBucketDAO();
JSONArray rbjson = rbDAO.retrieveByReportTypeJson();
System.out.println(rbjson);
request.setAttribute("rbJsonString", rbjson);
try {
FileWriter jsonFileWriter = new FileWriter("data.json");
jsonFileWriter.write(rbjson.toJSONString());
jsonFileWriter.flush();
jsonFileWriter.close();
System.out.println("Done");
} catch (IOException e) {
e.printStackTrace();
}
%>
I call the d3 content within home.jsp content
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="../../favicon.ico">
<title>Project</title>
<link rel="shortcut icon" href="assets/img/tBank.ico">
<!-- Bootstrap core CSS -->
<link href="assets/css/bootstrap.min.css" rel="stylesheet">
<script data-require="d3#3.5.3" data-semver="3.5.3" src="assets/js/d3.js"></script>
<!-- Custom styles for this template -->
<link href="assets/css/dashboard.css" rel="stylesheet">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="assets/js/script.js"></script>
<script>
$(function() {
$("#header").load("header.jsp");
$("#sidebar").load("sidebar.html");
//$("#d3content").load("getVolumeData.jsp");
});
</script>
</head>
<body>
<div id="header"></div>
<div class="container-fluid">
<div class="row">
<div class="col-sm-3 col-md-2 sidebar" id="sidebar">
<!--Sidebar here-->
</div>
<div class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main">
<!-- <img id="loading" src="assets/img/ajax_load.gif" alt="loading" />-->
<div id="pageContent">
<!-- this is where our AJAX-ed content goes -->
<h1 class="page-header">My Dashboard</h1>
</div>
<div id="d3content">
<script type="text/javascript">
$("#d3content").load(function(event){
// Set the dimensions of the canvas / graph
var margin = {
top: 30,
right: 20,
bottom: 70,
left: 50
},
width = 600 - margin.left - margin.right,
height = 300 - margin.top - margin.bottom;
// Parse the date / time
var parseDate = d3.time.format("%Y-%m-%d %X").parse;
// Set the ranges
var x = d3.time.scale().range([0, width]);
var y = d3.scale.linear().range([height, 0]);
// Define the axes
var xAxis = d3.svg.axis().scale(x)
.orient("bottom").ticks(5);
var yAxis = d3.svg.axis().scale(y)
.orient("left").ticks(5);
// Define the line
var priceline = d3.svg.line()
.x(function(d) {
return x(d.pointDateTime);
})
.y(function(d) {
return y(d.pointTime);
});
// Adds the svg canvas
var svg = d3.select("#d3content")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform",
"translate(" + margin.left + "," + margin.top + ")");
// Get the data
d3.json("data.json", function(error, data) {
data.forEach(function(d) {
d.symbol = d.currency;
d.pointDateTime = parseDate(d.pointDateTime);
d.pointTime = +d.pointValue;
});
console.log(data);
// Scale the range of the data
x.domain(d3.extent(data, function(d) {
return d.pointDateTime;
}));
y.domain([0, d3.max(data, function(d) {
return d.pointTime;
})]);
// Nest the entries by symbol
var dataNest = d3.nest()
.key(function(d) {
return d.symbol;
})
.entries(data);
console.log(dataNest);
var color = d3.scale.category10(); // set the colour scale
legendSpace = width / dataNest.length; // spacing for the legend
// Loop through each symbol / key
dataNest.forEach(function(d, i) {
console.log(d);
svg.append("path")
.attr("class", "line")
.style("stroke", function() { // Add the colours dynamically
return d.color = color(d.key);
})
.attr("id", 'tag' + d.key.replace(/\s+/g, '')) // assign ID
.attr("d", priceline(d.values));
// Add the Legend
svg.append("text")
.attr("x", (legendSpace / 2) + i * legendSpace) // space legend
.attr("y", height + (margin.bottom / 2) + 5)
.attr("class", "legend") // style the legend
.style("fill", function() { // Add the colours dynamically
return d.color = color(d.key);
})
.on("click", function() {
// Determine if current line is visible
var active = d.active ? false : true,
newOpacity = active ? 0 : 1;
// Hide or show the elements based on the ID
d3.select("#tag" + d.key.replace(/\s+/g, ''))
.transition().duration(100)
.style("opacity", newOpacity);
// Update whether or not the elements are active
d.active = active;
})
.text(d.key);
});
// Add the X Axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
// Add the Y Axis
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
});
});
</script>
</div>
</div>
</div>
</div>
<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script data-require="bootstrap#3.3.1" data-semver="3.3.1" src="assets/js/bootstrap.min.js"></script>
<!--<script src="assets/js/docs.min.js"></script>-->
</body>
</html>
I wish the d3 to be loaded inside d3content, but it doesnt show/display anything, any help?
Here's the problems:
1.) You don't load d3.js
2.) Your variables aren't mapped correctly. In this block:
data.forEach(function(d) {
d.currency = +d.currency; // this is a string do not use +
d.pointDateTime = parseDate(d.pointDateTime);
d.pointTime = +d.pointTime; // your json is pointValue, not pointTime
});
3.) Your date parse function is wrong. Should be:
var parseDate = d3.time.format("%Y-%m-%d %X").parse;
Cleaning this up, produces this example.
I have the following html (sized down for literary content) that is passed into a java method.
However, I want to take this passed in html string and add a <pre> tag that contains some text passed in and add a section of <script type="text/javascript"> to the head.
String buildHTML(String htmlString, String textToInject)
{
// Inject inject textToInject into pre tag and add javascript sections
String newHTMLString = <build new html sections>
}
-- htmlString --
<html>
<head>
</head>
<body>
<body>
</html>
-- newHTMLString
<html>
<head>
<script type="text/javascript">
window.onload=function(){alert("hello?";}
</script>
</head>
<body>
<div id="1">
<pre>
<!-- Inject textToInject here into a newly created pre tag-->
</pre>
</div>
<body>
</html>
What is the best tool to do this from within java other than a regex?
Here's how to do this with Jsoup:
public String buildHTML(String htmlString, String textToInject)
{
// Create a document from string
Document doc = Jsoup.parse(htmlString);
// create the script tag in head
doc.head().appendElement("script")
.attr("type", "text/javascript")
.text("window.onload=function(){alert(\'hello?\';}");
// Create div tag
Element div = doc.body().appendElement("div").attr("id", "1");
// Create pre tag
Element pre = div.appendElement("pre");
pre.text(textToInject);
// Return as string
return doc.toString();
}
I've used chaining a lot, what means:
doc.body().appendElement(...).attr(...).text(...)
is exactly the same as
Element example = doc.body().appendElement(...);
example.attr(...);
example.text(...);
Example:
final String html = "<html>\n"
+ " <head>\n"
+ " </head>\n"
+ " <body>\n"
+ " <body>\n"
+ "</html>";
String result = buildHTML(html, "This is a test.");
System.out.println(result);
Result:
<html>
<head>
<script type="text/javascript">window.onload=function(){alert('hello?';}</script>
</head>
<body>
<div id="1">
<pre>This is a test.</pre>
</div>
</body>
</html>