Please Guys, I am new to Jquery. I have been searching for a suitable help since last week but I can't find any. I want to replace a text with a smiley image using jquery but I have no idea how to run this. For example, I want this text "I am feeling :happy;" to be replaced with "I am feeling <img src='happy_face.gif' />" and "He is :sick;" to be replaced with "He is <img src='sick.gif' />".
Here is what I have gotten so far but it still displays the text instead of the image:
:) :(
<script src="js/jscript.js"></script>
<script>
var emotes = [
[':happy;', 'happy.gif'],
[':sick;', 'sick.gif']
];
function applyEmotesFormat(body){
for(var i = 0; i < emotes.length; i++){
body = body.replace(new RegExp(emotes[i][0], 'gi'), '<img src="emotes/' + emotes[i][1] + '">');
}
return body;
}
Thanks in advance
It is actually quite simple.
You only need one line to find and replace string instances in the HTML:
$("body").html($("body").html().replace(/:happy;/g,'<div class="happy-face"></div>'));
This sets $("body").html() to the $("body").html() with :happy; replaced with <div class="happy-face"></div>.
/:happy;/g is RegEx to find the string :happy; globally (g)
https://jsfiddle.net/heowqt1u/2/
You can use following code:
var a = [[':happy;','<img src="happy_face.gif" />'],[':sick;',"<img src='sick.gif' />"]];
a.forEach(function(item) {
$('p').each(function() {
var text = $(this).html();
$(this).html(text.replace(item[0], item[1]));
});
});
Working example here: Smiley codes replace
Related
I am trying to remove all the html tags out of a string in Javascript.
Heres what I have... I can't figure out why its not working....any know what I am doing wrong?
<script type="text/javascript">
var regex = "/<(.|\n)*?>/";
var body = "<p>test</p>";
var result = body.replace(regex, "");
alert(result);
</script>
Thanks a lot!
Try this, noting that the grammar of HTML is too complex for regular expressions to be correct 100% of the time:
var regex = /(<([^>]+)>)/ig
, body = "<p>test</p>"
, result = body.replace(regex, "");
console.log(result);
If you're willing to use a library such as jQuery, you could simply do this:
console.log($('<p>test</p>').text());
This is an old question, but I stumbled across it and thought I'd share the method I used:
var body = '<div id="anid">some text</div> and some more text';
var temp = document.createElement("div");
temp.innerHTML = body;
var sanitized = temp.textContent || temp.innerText;
sanitized will now contain: "some text and some more text"
Simple, no jQuery needed, and it shouldn't let you down even in more complex cases.
Warning
This can't safely deal with user content, because it's vulnerable to script injections. For example, running this:
var body = '<img src=fake onerror=alert("dangerous")> Hello';
var temp = document.createElement("div");
temp.innerHTML = body;
var sanitized = temp.textContent || temp.innerText;
Leads to an alert being emitted.
This worked for me.
var regex = /( |<([^>]+)>)/ig
, body = tt
, result = body.replace(regex, "");
alert(result);
This is a solution for HTML tag and   etc and you can remove and add conditions
to get the text without HTML and you can replace it by any.
convertHtmlToText(passHtmlBlock)
{
str = str.toString();
return str.replace(/<[^>]*(>|$)| ||»|«|>/g, 'ReplaceIfYouWantOtherWiseKeepItEmpty');
}
Here is how TextAngular (WYSISYG Editor) is doing it. I also found this to be the most consistent answer, which is NO REGEX.
#license textAngular
Author : Austin Anderson
License : 2013 MIT
Version 1.5.16
// turn html into pure text that shows visiblity
function stripHtmlToText(html)
{
var tmp = document.createElement("DIV");
tmp.innerHTML = html;
var res = tmp.textContent || tmp.innerText || '';
res.replace('\u200B', ''); // zero width space
res = res.trim();
return res;
}
you can use a powerful library for management String which is undrescore.string.js
_('a link').stripTags()
=> 'a link'
_('a link<script>alert("hello world!")</script>').stripTags()
=> 'a linkalert("hello world!")'
Don't forget to import this lib as following :
<script src="underscore.js" type="text/javascript"></script>
<script src="underscore.string.js" type="text/javascript"></script>
<script type="text/javascript"> _.mixin(_.str.exports())</script>
my simple JavaScript library called FuncJS has a function called "strip_tags()" which does the task for you — without requiring you to enter any regular expressions.
For example, say that you want to remove tags from a sentence - with this function, you can do it simply like this:
strip_tags("This string <em>contains</em> <strong>a lot</strong> of tags!");
This will produce "This string contains a lot of tags!".
For a better understanding, please do read the documentation at
GitHub FuncJS.
Additionally, if you'd like, please provide some feedback through the form. It would be very helpful to me!
For a proper HTML sanitizer in JS, see http://code.google.com/p/google-caja/wiki/JsHtmlSanitizer
<html>
<head>
<script type="text/javascript">
function striptag(){
var html = /(<([^>]+)>)/gi;
for (i=0; i < arguments.length; i++)
arguments[i].value=arguments[i].value.replace(html, "")
}
</script>
</head>
<body>
<form name="myform">
<textarea class="comment" title="comment" name=comment rows=4 cols=40></textarea><br>
<input type="button" value="Remove HTML Tags" onClick="striptag(this.form.comment)">
</form>
</body>
</html>
The selected answer doesn't always ensure that HTML is stripped, as it's still possible to construct an invalid HTML string through it by crafting a string like the following.
"<<h1>h1>foo<<//</h1>h1/>"
This input will ensure that the stripping assembles a set of tags for you and will result in:
"<h1>foo</h1>"
additionally jquery's text function will strip text not surrounded by tags.
Here's a function that uses jQuery but should be more robust against both of these cases:
var stripHTML = function(s) {
var lastString;
do {
s = $('<div>').html(lastString = s).text();
} while(lastString !== s)
return s;
};
The way I do it is practically a one-liner.
The function creates a Range object and then creates a DocumentFragment in the Range with the string as the child content.
Then it grabs the text of the fragment, removes any "invisible"/zero-width characters, and trims it of any leading/trailing white space.
I realize this question is old, I just thought my solution was unique and wanted to share. :)
function getTextFromString(htmlString) {
return document
.createRange()
// Creates a fragment and turns the supplied string into HTML nodes
.createContextualFragment(htmlString)
// Gets the text from the fragment
.textContent
// Removes the Zero-Width Space, Zero-Width Joiner, Zero-Width No-Break Space, Left-To-Right Mark, and Right-To-Left Mark characters
.replace(/[\u200B-\u200D\uFEFF\u200E\u200F]/g, '')
// Trims off any extra space on either end of the string
.trim();
}
var cleanString = getTextFromString('<p>Hello world! I <em>love</em> <strong>JavaScript</strong>!!!</p>');
alert(cleanString);
If you want to do this with a library and are not using JQuery, the best JS library specifically for this purpose is striptags.
It is heavier than a regex (17.9kb), but if you need greater security than a regex can provide/don't care about the extra 17.6kb, then it's the best solution.
Like others have stated, regex will not work. Take a moment to read my article about why you cannot and should not try to parse html with regex, which is what you're doing when you're attempting to strip html from your source string.
Is there a way to replace/remove the text only after a certain character using jQuery or Javascript? I want to remove text after the dot '.' from an element.
You can easily do it with .split() like this:
var text = 'daslkdaskldj.asdasdasd';
text.split('.')[0];
here is fiddle
var string = "Test String.Test String 2".split('.')[0];
console.log(string)
Will give you the output:
Test String
Here is a working example:
https://jsfiddle.net/zr2wg90d/
Your question is a bit unclear. But to remove all text after the first '.'(dot) This can do the trick with an input field. There are a lot of ways to achieve this. This is a solution without jQuery.
function removeAfterDot() {
var test = document.getElementById("myInput").value;
alert("String before remove: " + test);
test = test.substr(0, test.indexOf('.'));
alert("String after remove: " + test);
}
<input type="text" id="myInput" onchange=removeAfterDot();>
text.substr(0, text.indexOf('.'));
Hope this helps.
var q = 'https://stackoverflow.com/questions/';
q = q.substring(0, q.indexOf('.'));
alert(q);
Try this
var yourString = "Hello. World";
yourString.substr(0, yourString.indexOf('.'));
Will give you the following output
Hello
you can use this. split any string at the character you give it.
<p>first part . second part</p>
remove
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$('a').click(function(){
var the_string = $('p').text();
var removed = the_string.split('.', 1);
$('p').text(removed);
});
</script>
for me splice works, I basically use this for removing characters after a hyphen or a comma etc.
var text = 'Tellme.more';
text.split('.')[0]);
//Consoles out -> Tellme
I have a string in which there are continous occurances of a font tag
<font color="blue">DATA ENTRY</font>
and in some cases like this
<font class="beat">DATA ENTRY</font>
I want to replace the 2 tags with
So that it looks like this
<p>DATA ENTRY</p>
I tried this ,can anyone please suggest me help.Thanks.
text = text.replace('<font [^"]*>',<p>).replace('</font>','');
block.outerHTML = "<p>" + block.innerHTML + "</p>"
where block is any HTML block
it just left to select it correctly with:
var block = document.querySelector(".selector");
If you want to stick with your simple string manipulation, you need to use regular expressions and correct the replacements in your replace calls:
text = text.replace(/<font[^>]*>/g,'<p>').replace(/<\/font>/g,'</p>');
Since you just need to replace the string you can do this with just one replace statement.
text = text.replace(/<(\/*)font[^>]*>/g, '<$1p>');
If you using jQuery with replaceWith
$('font').replaceWith('<p>DATA ENTRY</p>');
First of all the font tag is deprecated and should not be used.
Get an array of the tags you want to replace.
var elems = document.getElementsByTagName('font');
Go through loop and replace old HTML with new HTML
for (var i = 0; i < elems.length; i++)
{
var target = elems[i].innerHTML;
elems[i].innerHTML = target.replace(/(<p)/igm, '<font').replace(/<\/p>/igm, '</font>');
}
Note: This is not tested but should work.
Try like this :
$('font').contents().unwrap().wrap('<p/>');
In javascript, you can do something like this :
var str="<font>hello world</font>";
str = str.replace(/<font>/, "<p>");
str = str.replace(/<\/font>/,"</p>");
I have a string in the below non-escaped format in a HTML page:
<a href="http://somesite/product?page=blahk&id=EA393216&tabs=7,0&selections=quarter:Q2+2013^&wicket:pageMapName=wicket-2\">SomeThing</a>
What I need is to use jQuery/JavaScript to replace that string with just the link "SomeThing".
I have looked at some examples in StackOverflow, but they don't seem to work. I'm just getting started with jQuery and JavaScript, so would appreciate any help here.
Any ideas?
Try html() and text() in jquery to decode:
var str = '<a href="http://somesite/product?page=blahk&id=EA393216&tabs=7,0&selections=quarter:Q2+2013^&wicket:pageMapName=wicket-2\">SomeThing</a>';
var decoded = $('<div />').html(str).text();
alert($(decoded).text());
See Fiddle demo
var str = '<a href="http://somesite/product?page=blahk&id=EA393216&tabs=7,0&selections=quarter:Q2+2013^&wicket:pageMapName=wicket-2\">SomeThing</a>';
var helper = document.createElement('p');
// evaluate as HTML once, text now "<a href..."
helper.innerHtml = str;
// evaluate as HTML again, helper now has child element a
helper.innerHtml = helper.innerText;
// get text content only ("SomeThing")
alert(helper.innerText);
Here is a possible starting point.
Hope this gets you started!
function parseString(){
var str = '<a href="http://somesite/product?page=blahk&id=EA393216&tabs=7,0&selections=quarter:Q2+2013^&wicket:pageMapName=wicket-2\">SomeThing</a>';
var begin = str.indexOf('\">',0)+2; //--determine where the opening anchor tag ends
var end = str.indexOf('</a>',0); //--determine where the closing anchor tag begins
var parsedString = str.substring(begin,end); //--grab whats in between;
/*//--or all inline
var parsedString = str.substring(str.indexOf('\">',0)+2,str.indexOf('</a>',0));
*/
console.log(parsedString);
}
parseStr();
How to find and replace begin tag and end tags in an html string using javascript/jquery
for example
var myString = "<span> Hello john</span><div> John likes to play guitar </div> <div style="color:Blue;font-weight:bold" class='quotes'>Anna likes to arrange flowers
</div>";
I need to find the "div" tag and replace with other html tag like "p" tag/ "span" tag
Resulting html string after replace "div" tag to "p" tag
var replacestring="<span> Hello john</span><p> John likes to play guitar </p> <p style="color:Blue;font-weight:bold" class='quotes'>Anna likes to arrange flowers
</p>";
Please suggest any solution.
Javascript with regular expression:
myString = myString.replace(/<(\/)?div[^>]*>/g, '<$1p>');
Also see my jsfiddle.
=== UPDATE ===
myString = myString.replace(/<(\/)?div([^>]*)>/g, '<$1p$2>');
jsfiddle 2.
myString = $('<div />').html(myString).find('div').replaceWith(function() {
var p = $('<p />');
p.html($(this).html());
$.each(this.attributes, function(index, attr) {
p.attr(attr.name, attr.value);
});
return p;
}).end().html();
jsFiddle.
Trying something with jQuery, however, I am not sure if it is any better than what alex suggested.
var $replaceString=$(replaceString);
$("div",$replaceString).each(
function()
{
var $p=$(document.createElement('p')).html($(this).html());
//add code to add any attribute that you want to be copied over.
$(this).after($p);
$(this).remove();
}
);