How can I apply a tailwind class, if another var is true ... the follwoing does not seem to work.
This works
<script>
let svgColor = 'text-red-400'
</script>
<p class="{svgColor}">Test</p>
But this does not
<script>
let svgColor = 'text-red-400'
let svgVisible = true;
</script>
<p class="{svgVisible ? {svgColor} : ''}">Test</p>
By wrapping the svgColor with the curly braces you are effectively making an object with the prop svgColor.
The correct syntax would be:
<p class={svgVisible ? svgColor : ''}>Test</p>
Related
I am using katex to render math.
https://github.com/Khan/KaTeX
Generally, to get this to work I link to the files katex.min.js and katex.min.css from a cdn, which is one of the ways the directions suggest.
I wrap what needs to be rendered in tags and give all the same class. For example:
<span class='math'>\begin{bmatrix}a & b \\c & d\end{bmatrix}</span>
And inside a script tag I apply the following:
var math = document.getElementsByClassName('math');
for (var i = 0; i < math.length; i++) {
katex.render(math[i].innerHTML, math[i]);
}
So, my implementation works but there is a problem in what katex returns. The output of the above gives me:
This exact same question is asked here:
https://github.com/j13z/reveal.js-math-katex-plugin/issues/2
But I can't understand any of it.
The solution is to use element.textContent, not element.innerHTML.
If I use a form like what follows, the matrix will be rendered properly.
var math = document.getElementsByClassName('math');
for (var i = 0; i < math.length; i++) {
katex.render(math[i].textContent, math[i]); // <--element.textContent
}
A solution that works for me is the following (it is more of a hack rather than a fix):
<script type="text/javascript">
//first we define a function
function replaceAmp(str,replaceWhat,replaceTo){
replaceWhat = replaceWhat.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
var re = new RegExp(replaceWhat, 'g');
return str.replace(re,replaceTo);
}
//next we use this function to replace all occurences of 'amp;' with ""
var katexText = $(this).html();
var html = katex.renderToString(String.raw``+katexText+``, {
throwOnError: false
});
//hack to fix amp; error
var amp = '<span class="mord mathdefault">a</span><span class="mord mathdefault">m</span><span class="mord mathdefault">p</span><span class="mpunct">;</span>';
var html = replaceAmp(html, amp, "");
</script>
function convert(input) {
var input = input.replace(/amp;/g, '&'); //Find all 'amp;' and replace with '&'
input=input.replace(/&&/g, '&'); //Find all '&&' and replace with '&'. For leveling 10&x+ &3&y+&125&z = 34232
var html = katex.renderToString(input, {
throwOnError: false});
return html
}
Which version are you using?
Edit the src/utils.js and comment line number 51 to 55 after updated run in terminal npm run build command.
I am useing Zend\Dom\Query to get specific content from a webpage.
This is the html:
<div class="menuName darkGreen leftMenu">
Mouse
</div>
How can I get the value Mouse ??
Thanks
Try this:
$dom = new \Zend\Dom\Query($html);
$results = $dom->execute('div.menuName a');
$doc = $results->current();
var_dump($doc->nodeValue);
Try this:
$doc->getAttribute('src');
I am returning this from a partial view:
<script>
document.getElementById("login").style.visibility = "hidden";
document.getElementById("displayname").innerHTML = #ViewBag.DisplayName
</script>
The second script line, however, does not work.
How to write this correctly?
Greg
#Html.Raw("document.getElementById(\"displayname\").innerHTML = " + #ViewBag.DisplayName)
One way:
javascript_tag do
== "var all_product_ids = #{existing_ids.to_json};"
== "var products_json = #{#filter.data.to_json};"
or:
= %Q{
var all_product_ids = #{existing_ids.to_json};
var products_json = #{#filter.data.to_json};
}
are there any better solutions for this?
In Slim
javascript:
var all_product_ids = "#{existing_ids.to_json}";
var products_json = "#{#filter.data.to_json}";
javascript:
var all_product_ids = #{raw existing_ids.to_json};
var products_json = #{raw #filter.data.to_json};
From https://github.com/slim-template/slim
Text Interpolation paragraph
SLIM escapes HTML by default.
To avoid the same use #{{content}} for #{content}
what i prefer to do, is to keep all the javascript in a separate file.
for example, i would do it as follows(jquery):
in your layout:
...
<body data-product-ids="<%= existing_ids.to_json %>"
data-products-json="<%= #filter.data.to_json %>">
.. in js:
// create your application namespace
$.myapp = {};
$.myapp.allProductIds = $.parseJSON( $('body').attr('data-product-ids') );
$.myapp.products = $.parseJSON( $('body').attr('data-products-json') );
so, you'll then use it in js like so:
$.myapp.allProductIds
I had a similar problem with this. Using the code that others have provided didn't work for me because slim was html escaping my variable. I ended up using Gon. This one is for Sinatra, but they have a gem for Rails as well. Hope it helps others having similar problems.
create a _your_erb_file_contain_javascript_code.erb first
And then in your slim file javascript: part:
#{ conditions ? (render 'your_erb_file_contain_javascript_code') : nil}
javascript:
var isAdmin = "#{current_user.admin? ? 1 : 0}";
I have multiple pages generated using PDFKit. How can I add page numbers to the bottom?
PDFKit.configure do |config|
config.default_options = {
header_right: "Page [page] of [toPage]"
}
end
kit = PDFKit.new(body_html)
Read all detailed documentation here:
http://madalgo.au.dk/~jakobt/wkhtmltoxdoc/wkhtmltopdf-0.9.9-doc.html
PDFKit is just a wrap up for wkhtmltopdf application that is written in C.
you need to specify a footer like this:
kit = PDFKit.new(your_html_content_for_pdf, :footer_html => "#{path_to_a_footer_html_file}")
then in the footer file have this:
<html>
<head>
<script type="text/javascript">
function subst() {
var vars={};
var x=document.location.search.substring(1).split('&');
for(var i in x) {var z=x[i].split('=',2);vars[z[0]] = unescape(z[1]);}
var x=['frompage','topage','page','webpage','section','subsection','subsubsection'];
for(var i in x) {
var y = document.getElementsByClassName(x[i]);
for(var j=0; j<y.length; ++j) y[j].textContent = vars[x[i]];
}
}
</script>
</head>
<body style="margin: 0;" onload="subst();">
Page <span class="page"></span> of <span class="topage"></span>
</body>
</html>
elements of classes 'frompage','topage','page','webpage','section','subsection','subsubsection' will get substituted with the appropriate data
I did page number with PDFKit, just by adding this:
%meta{:name => 'pdfkit-footer_right', :content => "[page]"}
in my haml file, in my RoR project.
For some weird reason, ( perhaps because I'm using slim ) - I have to use single quotes around the content, instead of double quotes - or else it attempts to escape the brackets and raw text "[page]" shows up, so try single quotes if you run into this issue with your pages.