Hey :) I know a similiar question was asked before, but i just cant get it through. I want to create a method called something like makeMeSpaces, so my h2 text will have a space between each character.. and i might want to use it elsewhere aswell. I have this until now, from the logic point of view:
var text = "hello";
var betweenChars = ' '; // a space
document.querySelector("h1").innerHTML = (text.split('').join(betweenChars));
it also works pretty fine, but i think i want to do
<h2>Hello.makeMeSpaces()</h2>
or something like this
Thank you guys!
If you really want this in a 'reusable function,' you'd have to write your own:
function addSpaces(text) {
return text.split('').join(' ');
}
Then, elsewhere in code, you could call it like so:
var elem = document.querySelector('h2');
elem.innerHTML = addSpaces(elem.innerHTML);
Maybe this is what you want , not exactly what you showed but some what similar
Element.prototype.Spacefy = function() {
// innerText for IE < 9
// for others it's just textContent
var elem = (this.innerText) ? this.innerText : this.textContent,
// replacing HTML spaces (' ') with simple spaces (' ')
text = elem.replace(/ /g, " ");
// here , space = " " because HTML ASCII spaces are " "
space = " ",
// The output variable
output = "";
for (var i = 0; i < text.length; i++) {
// first take a character form element text
output += text[i];
// then add a space
output += space;
};
// return output
this.innerHTML = output;
};
function myFunction() {
var H1 = document.getElementById("H1");
// calling function
H1.Spacefy();
};
<h1 id="H1">
<!-- The tags inside the h1 will not be taken as text -->
<div>
Hello
</div>
</h1>
<br />
<button onclick="myFunction ()">Space-fy</button>
You can also click the button more than once :)
Note :- this script has a flow, it will not work for a nested DOM structure refer to chat to know more
Here is a link to chat if you need to discuss anything
Here is a good codepen provided by bgran which works better
Related
Let's say I have an HTML document with the following body:
<style>
.highlighted {
color: red;
background-color: yellow;
}
</style>
<article>My text in an element</article>
I have the challenge to style the i letter from the in word inside the <article> tag with javascript, and I'm required to do it by it's index [8].
So far I can only think of starting with this...
<script>
const article = document.querySelector('article').innerText
console.log(article[8]);
</script>
Expected output:
<article>My text <span class="highlighted">i</span>n an element</article>
// Console
>>>> "i"
...although I've never tried anything like this before, so I'm kinda lost with the following steps.
I supose I need to insert a <span> tag by this index, but I'm not sure how I would set the closing </span> tag or update the DOM.
What would be a good way to achieve this kind of styling?
//get text of article
const article = document.querySelector('article').innerText;
//find index of word 'in'
const index = article.indexOf('in');
//opening and closing tags
const openingTag = '<span style="color:red">'
const closingTag = '</span>'
//insert tags into article
const newHTML
= article.slice(0, index)
+ openingTag + 'in' + closingTag
+ article.slice(index + 2);
document.querySelector('article').innerHTML = newHTML;
This code styles the first occurrence of the word "in" by setting the text color to red. If you want to do something else, change the style attribute of the opening tag.
article.slice(0, index) returns everything before the word "in." In your example, this would evaluate to 'My text '. article.slice(index + 2) returns everything after the word "in" because "in" is 2 letters long. In your example, this would evaluated to ' an element'. When all the strings are concatenated together, the result is 'My text <span style="color:red">in</span> an element'.
const HIGHLIGHT_IDX = 8;
const article = document.querySelector('article').innerText;
const words = article.split(' ');
let highlightCheck = words[0].length;
let wordToHighlight = words[0].length >= HIGHLIGHT_IDX && '0';
let wordIdx = 1;
while (!wordToHighlight) {
highlightCheck += 1 + words[wordIdx].length;
if (highlightCheck >= HIGHLIGHT_IDX) {
wordToHighlight = wordIdx;
} else {
wordIdx += 1;
}
}
words[wordToHighlight] =
`<span class="highlight">${words[wordToHighlight]}</span>`;
document.querySelector('article').innerText = words.join(' ');
What i have done:
function makeBold(strings) {
var myHTML = document.getElementsByTagName('body')[0].innerHTML;
myHTML = myHTML.replace(strings, '<b>' + strings + '</b>');
document.getElementsByTagName('body')[0].innerHTML = myHTML
}
this code works only for the paces where the texts are free from ant tags
Eg: <p class="ClassName">Some free text without any inner html elements</p>
But for sentences below this the above javascript function is not giving any result
Eg sentence which are not working:
<p class="Aclass"><span class="char-style-override-1">Starting from here, </span><span class="char-style-override-2">text resumes after the span tag</span><span class="char-style-override-1">. again text resumes.</span></p>
What I need
i need a functionality to make the above text bold when i pass that text into my js function. and by text i mean only
Starting from here,text resumes after the span tag. again text resumes.
when i call the above mentioned jas function like this
makeBold('Starting from here,text resumes after the span tag. again text resumes.');
nothing happens, the entire sentence does not gets bold nothing happens, because the js function only looks for the occurrence of that string and makes it bold, in my second example the text is mixed with html tags
so that the above mentioned text will get bold when i call my makebold function.
Please note that i dont have the id for the <p> , what i have is a couple of random strings stored in my db and load a couple of webpages, while doing so i want to bold the sentence/text from the webpage if is matches with my passed string from db
While doing my research i got a code to highlight text given to a js. this js function will select the exact text in the html page which is passed to the js function.
the second eg also works for this code. i.e i can select the exact string from the example by passing it to the function.
function selectText(text) {
if (window.find && window.getSelection) {
document.designMode = "on";
var sel = window.getSelection();
sel.collapse(document.body, 0);
while (window.find(text)) {
document.getElementById("button").blur();
document.execCommand("HiliteColor", false, "yellow");
sel.collapseToEnd();
}
document.designMode = "off";
} else if (document.body.createTextRange) {
var textRange = document.body.createTextRange();
while (textRange.findText(text)) {
textRange.execCommand("BackColor", false, "yellow");
textRange.collapse(false);
}
}
}
I tried to customize it so that instead of selecting the passed text, i tried to make it bold. but coudnt succed.
Please help me in getting this done. I am new to js.
I finally got a solution to your problem that works as you want it to (i. e. the function takes an arbitrary substring and marks anything that fits the substring bold while leaving the rest of the string untouched). If the string passed doesn't match any part of the string that you want to modify, the latter remains untouched.
Here goes (Beware: That JS section got really BIG!):
<!DOCTYPE html>
<html lang="en">
<head>
<title>Test case for making arbitrary text bold</title>
<meta charset="UTF-8">
<script type="application/javascript">
// Takes two strings and attempts to intersect them (i. e. the end of p_str1
// must match the beginning of p_str2). The index into p_str1 is returned.
// If no intersection can be found, -1 is returned.
function intersectStrings(p_str1, p_str2)
{
var l_pos = -1;
do
{
l_pos = p_str1.indexOf(p_str2[0], l_pos + 1);
if(p_str1.substr(l_pos) == p_str2.substr(0, p_str1.length - l_pos))
// If the two substrings match, we found something. Return with the position.
break;
}
while(l_pos != -1);
return l_pos;
}
function makeBold(p_string)
{
var l_elem = document.getElementById('modify');
var l_html = l_elem.innerHTML;
var l_text = l_elem.innerText;
var l_aux = l_html.match(/<.+?>/g);
var l_here = l_text.indexOf(p_string);
var l_before;
var l_middle;
var l_behind;
if(typeof(p_string) != 'string')
throw "invalid argument";
// First of all, see whether or not we have a match at all. If no, we don't
// need to continue with this.
if(l_here == -1)
{
console.error('makeBold: Could not find desired substring ' + p_string + '! Stop...');
return;
}
// Take the plain text and split it into three distinct parts (l_middle is of
// interest for us here).
l_before = l_html.slice(0, l_here);
l_behind = l_html.slice(l_here + l_html.length);
l_middle = l_html.slice(l_here, l_here + l_html.length);
if(l_aux)
{
// If we have a set of markup tags, we need to do some additional checks to
// avoid generating tag soup.
let l_target = new Array();
let l_tag;
let l_nexttag;
let l_this;
let l_endpos = 0;
let l_in_str = false;
let l_start;
while(l_aux.length - 1)
{
l_tag = l_aux.shift();
l_target.push(l_tag);
l_nexttag = l_aux[0];
l_endpos = l_html.indexOf(l_nexttag, 1);
l_this = l_html.slice(l_tag.length, l_endpos);
l_html = l_html.slice(l_endpos);
// Skip the entire rigmarole if there are two adjacent tags!
if(l_tag.length == l_endpos)
continue;
if(!l_in_str)
{
if((l_start = l_this.indexOf(p_string)) != -1)
{
// If we find the entire passed string in a fragment of plain text, we can
// modify that, reassemble everything and exit the loop.
l_before = l_this.slice(0, l_start);
l_behind = l_this.slice(l_start + p_string.length);
l_middle = l_this.slice(l_start, l_start + p_string.length);
l_this = l_before + '<strong>' + l_middle + '</strong>' + l_behind;
l_target.push(l_this);
l_target.push(l_html);
l_html = l_target.join('');
console.info('makeBold: The passed string fit between two tags: Done!');
break;
}
// Take the possibility of having to scan across fragments into account. If
// that is the case, we need to piece things together.
if((l_start = intersectStrings(l_this, p_string)) != -1)
{
// Once we wind up here we have a partial match. Now the piecework starts...
l_before = l_this.slice(0, l_start);
l_middle = l_this.slice(l_start);
l_this = l_before + '<strong>' + l_middle + '</strong>';
l_target.push(l_this);
console.info('makeBold: Found starting point of bold string!');
l_in_str = true;
}
else
{
// Nothing to do: Push the unmodified string.
l_target.push(l_this);
}
}
else
if((l_endpos = intersectStrings(p_string, l_this)) == -1)
{
// We haven't arrived at the end position yet: Push the entire segment with
// bold markers onto the stack.
l_this = '<strong>' + l_this + '</strong>';
l_target.push(l_this);
}
else
{
// We have an end position: Treat this fragment accordingly, wrap everything up
// and exit the loop.
l_behind = l_this.slice(l_endpos + 1);
l_middle = l_this.slice(0, l_endpos + 1);
l_this = '<strong>' + l_middle + '</strong>' + l_behind;
l_target.push(l_this);
l_target.push(l_html);
l_html = l_target.join('');
console.info('makeBold: Found the end part: Done!');
break;
}
}
}
else
l_html = l_before + '<strong>' + l_middle + '</strong>' + l_behind;
l_elem.innerHTML = l_html;
}
</script>
</head>
<body>
<header><h1>Test case for making arbitrary text bold by using JavaScript</h1></header>
<main>
<p id="modify"><span class="char-style-override-1">Starting from here, </span><span class="char-style-override-2">text resumes after the span tag</span><span class="char-style-override-1">. again text resumes.</span></p>
</main>
<script type="application/javascript">
// makeBold('Starting from here, text resumes after the span tag. again text resumes.');
// makeBold('from here, text resumes');
// makeBold('resumes after the span');
makeBold('text resumes after the span tag');
</script>
</body>
</html>
Unfortunately this job couldn't be done with a short section, because you need to take various cases into account that need to be handled individually. The control logic that I have come up with addresses all these concerns.
See the annotations in the JS that I have made for details.
I apologize in advance, this is the first Stack Overflow question I've posted. I was tasked with creating a new ADA compliant website for my school district's technology helpdesk. I started with minimal knowledge of HTML and have been teaching myself through w3cschools. So here's my ordeal:
I need to create a page for all of our pdf and html guides. I'm trying to create a somewhat interactable menu that is very simple and will populate a link array from an onclick event, but the title="" text attribute drops everything after the first space and I've unsuccessfully tried using a replace() method since it's coming from an array and not static text.
I know I'm probably supposed to use an example, but my work day is coming to a close soon and I wanted to get this posted so I just copied a bit of my actual code.
So here's what's happening, in example 1 of var gmaildocAlt the tooltip will drop everything after Google, but will show the entire string properly with example 2. I was hoping to create a form input for the other helpdesk personnel to add links without knowing how to code, but was unable to resolve the issue of example 1 with a
var fix = gmaildocAlt.replace(/ /g, "&nb sp;")
//minus the space
//this also happens to break the entire function if I set it below the rest of the other variables
I'm sure there are a vast number of things I'm doing wrong, but I would really appreciate the smallest tip to make my tooltip display properly without requiring a replace method.
// GMAIL----------------------------
function gmailArray() {
var gmaildocLink = ['link1', 'link2'];
var gmaildocTitle = ["title1", "title2"];
var gmaildocAlt = ["Google Cheat Sheet For Gmail", "Google 10-Minute Training For Gmail"];
var gmailvidLink = [];
var gmailvidTitle = [];
var gmailvidAlt = [];
if (document.getElementById("gmailList").innerHTML == "") {
for (i = 0; i < gmaildocTitle.length; i++) {
arrayGmail = "" + gmaildocTitle[i] + "" + "<br>";
document.getElementById("gmailList").innerHTML += arrayGmail;
}
for (i = 0; i < gmailvidTitle.length; i++) {
arrayGmail1 = "";
document.getElementById("").innerHTML += arrayGmail1;
}
} else {
document.getElementById("gmailList").innerHTML = "";
}
}
<div class="fixed1">
<p id="gmail" onclick="gmailArray()" class="gl">Gmail</p>
<ul id="gmailList"></ul>
<p id="calendar" onclick="calendarArray()" class="gl">Calendar</p>
<ul id="calendarList"></ul>
</div>
Building HTML manually with strings can cause issues like this. It's better to build them one step at a time, and let the framework handle quoting and special characters - if you're using jQuery, it could be:
var $link = jQuery("<a></a>")
.attr("href", gmaildocLink[i])
.attr("title", gmaildocAlt[i])
.html(gmaildocTitle[i]);
jQuery("#gmailList").append($link).append("<br>");
Without jQuery, something like:
var link = document.createElement("a");
link.setAttribute("href", gmaildocLink[i]);
link.setAttribute("title", gmaildocAlt[i]);
link.innerHTML = gmaildocTitle[i];
document.getElementById("gmailList").innerHTML += link.outerHTML + "<br>";
If it matters to your audience, setAttribute doesn't work in IE7, and you have to access the attributes as properties of the element: link.href = "something";.
If you add ' to either side of the variable strings then it will ensure that the whole value is read as a single string. Initially, it was assuming that the space was exiting the Title attribute.
Hope the below helps!
UPDATE: If you're worried about using apostrophes in the title strings, you can use " by escaping them using a . This forces JS to read it as a character and not as part of the code structure. See the example below.
Thanks for pointing this one out guys! Sloppy code on my part.
// GMAIL----------------------------
function gmailArray() {
var gmaildocLink = ['link1', 'link2'];
var gmaildocTitle = ["title1", "title2"];
var gmaildocAlt = ["Google's Cheat Sheet For Gmail", "Google 10-Minute Training For Gmail"];
var gmailvidLink = [];
var gmailvidTitle = [];
var gmailvidAlt = [];
if (document.getElementById("gmailList").innerHTML == "") {
for (i = 0; i < gmaildocTitle.length; i++) {
var arrayGmail = "" + gmaildocTitle[i] + "" + "<br>";
document.getElementById("gmailList").innerHTML += arrayGmail;
}
for (var i = 0; i < gmailvidTitle.length; i++) {
var arrayGmail1 = "";
document.getElementById("").innerHTML += arrayGmail1;
}
} else {
document.getElementById("gmailList").innerHTML = "";
}
}
<div class="fixed1">
<p id="gmail" onclick="gmailArray()" class="gl">Gmail</p>
<ul id="gmailList"></ul>
<p id="calendar" onclick="calendarArray()" class="gl">Calendar</p>
<ul id="calendarList"></ul>
</div>
I'm attempting to duplicate the original img tag's functionality in custom img tag that will be added to the pagedown converter.
e.g I'm copy the original behavior:
![image_url][1] [1]: http://lolink.com gives <img src="http://lolink.com">
into a custom one:
?[image_url][1] [1]: http://lolink.com gives <img class="lol" src="http://lolink.com">
Looking at the docs the only way to do this is through using the preblockgamut hook and then adding another "block level structure." I attempted doing this and got an Uncaught Error: Recursive call to converter.makeHtml
here's the code of me messing around with it:
converter.hooks.chain("preBlockGamut", function (text, dosomething) {
return text.replace(/(\?\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g, function (whole, inner) {
return "<img src=" + dosomething(inner) + ">";
});
});
I'm not very experienced with hooks and everything so what would I do to fix it? Thanks.
UPDATE: found out that _DoImages runs after prespangamut, will use that instead of preblockgamut
Figured it out! The solution is very clunky and involves editing the source code because I am very bad at regex and the _DoImage() function uses a lot of internal functions only in the source.
solution:
All edits will be made to the markdown.converter file.
do a ctrl+f for the _DoImage function, you will find that it is named in two places, one in the RunSpanGamut and one defining the function. The solution is simple, copy over the DoImage function and related stuff to a new one in order to mimic the original function and edit it to taste.
next to DoImage function add:
function _DoPotatoImages(text) {
text = text.replace(/(\?\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g, writePotatoImageTag);
text = text.replace(/(\?\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g, writePotatoImageTag);
return text;
}
function writePotatoImageTag(wholeMatch, m1, m2, m3, m4, m5, m6, m7) {
var whole_match = m1;
var alt_text = m2;
var link_id = m3.toLowerCase();
var url = m4;
var title = m7;
if (!title) title = "";
if (url == "") {
if (link_id == "") {
link_id = alt_text.toLowerCase().replace(/ ?\n/g, " ");
}
url = "#" + link_id;
if (g_urls.get(link_id) != undefined) {
url = g_urls.get(link_id);
if (g_titles.get(link_id) != undefined) {
title = g_titles.get(link_id);
}
}
else {
return whole_match;
}
}
alt_text = escapeCharacters(attributeEncode(alt_text), "*_[]()");
url = escapeCharacters(url, "*_");
var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\"";
title = attributeEncode(title);
title = escapeCharacters(title, "*_");
result += " title=\"" + title + "\"";
result += " class=\"p\" />";
return result;
}
if you look at the difference between the new _DoPotatoImages() function and the original _DoImages(), you will notice I edited the regex to have an escaped question mark \? instead of the normal exclamation mark !
Also notice how the writePotatoImageTag calls g_urls and g_titles which are some of the internal functions that are called.
After that, add your text = _DoPotatoImages(text); to runSpanGamut function (MAKE SURE YOU ADD IT BEFORE THE text = _DoAnchors(text); LINE BECAUSE THAT FUNCTION WILL OVERRIDE IMAGE TAGS) and now you should be able to write ?[image desc](url) along with 
done.
The full line (not only the regex) in Markdown.Converter.js goes like this:
text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g, writeImageTag);
so check the function writeImageTag. There you can see how the regex matching text is replaced with a full img tag.
You can change the almost-last line before its return from
result += " />";
to
result += ' class="lol" />';
Thanks for the edit to the main post.
I see what you mean now.
It is a bit weird how it uses empty capture groups to specify tags, but if it works, it works.
It looks like you would need to add on an extra () onto the regex string, then specify m8 as a new extra variable to be passed into the function, and then specify it as class = m8; like the other variables at the top of the function.
Then where it says var result =, instead of class =\"p\" you would just put class + title=\"" + .......
<div id = "board>
<div>{abc</div>
<div>def</div>
<div>ghi}</div>
</div>
I want compare every char inside the div at their position and do something when if found { or }
Im aware that this is possible by wrapping every char within <span></span>
Is there a way to do this without using a span? I will use this for brace matching of my code editor project. this is what i've done using span wrapping, but it is so slow..
$exceedingInlineDiv = $('#board_code_dup > div').eq(x);
if( $exceedingInlineDiv.text() == ''){
var chars = '<span> <br> </span>';
$exceedingInlineDiv.html(chars);
}
else{
var chars = jQuery.map($exceedingInlineDiv.text().split(''), function(c) {
return '<span>' + c + '</span>';
});
$exceedingInlineDiv.html(chars.join(''));
}//else
I'm not sure what you want to do, but maybe you want something like this:
var board = document.getElementById("board"),
divs = board.getElementsByTagName("div"),
texts = [], i = 0;
for (; i < divs.length; i++)
texts.push(divs[i].innerHTML);
// texts => ["{abc", "def", "ghi}"]