How do I use concatenated string in a DIV? [closed] - javascript

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I think my concatenating is fine, but my use of it isn't working. Any help would be appreciated. Thanks.
<script>
var str1 = "/images/";
var str2 = "test.jpg";
var res = str1.concat(str2);
</script>
<div class="product-sprite" data-image="res"></div>

DOM element attributes are not evaluated as variables. You need to assign it to the element property.
var res = str1 + str2; // no need to use .concat()
document.querySelector(".product-sprite").dataset.image = res;

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Special Character codes to Normal symbol - JavaScript [closed]

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I have a dropdown showing list of languages,
Now, some of these languages contains special HTML characters, but I want to show the real values of those characters.
Like.
&egrave should be replaced with è
How to do this using Javascript ?
Thanks in advance !!
One way to do this:
const decodeHtml = (html) => {
const t = document.createElement("textarea");
t.innerHTML = html;
return t.value;
}

Javascript cant append elements [closed]

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I am getting some data from my server and I want to create element but this code is not working please help me
var filelist=['dummy1','dummy2','etc']
filelist.forEach(file=>{
var newli=document.createElement("li")
var newa=document.createElement("a")
newa.innerHTML=file
newa.setAttribute('href',file)
newli.append(newa)
box.append(newli)
})
Note the box is a div in above code
Here you go, this is working. One needs to assure that before the execution of any DOM accessing functionality, the former has to be ready/loaded.
const fileNameList = ['dummy1', 'dummy2', 'etc'];
const box = document.getElementById('box');
fileNameList.forEach(fileName => {
const newLi = document.createElement("li");
const newA = document.createElement("a");
newA.innerHTML = fileName;
newA.setAttribute('href', fileName);
newLi.append(newA);
box.appendChild(newLi);
});
<div id='box'>Your box</div>

how to receive GET parameter from current page with js [closed]

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I need to receive get parameter from the current page to do xhr request further. I've tried to set data- tags but I think this kludge is not a good deсition.
Give this a try
function getUrlVars() {
var vars = {};
var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {
vars[key] = value;
});
return vars;
}

How to add var in get value in JavaScript? [closed]

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Closed 8 years ago.
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How to add var in get value in JavaScript ?
I have 2 var
var page = $('#demoajax').val();
var name = $("#users").val();
This is mym old code
data:"server=Windows&actionfunction=showData&page="+page,
I want to add var name and value now=date to this line how can I do that ?
First I try this
data:"username="+name+"&server=Windows&actionfunction=showData&page="+page+"&now=date",
But not work.
You appear to have inserted your changes in the middle of the query string. Try this instead.
data:"server=Windows&username="+name+"&actionfunction=showData&page="+page+"&now=date",
Why do you have data:"username="+name+"&server=Windows&actionfunction=showData&page="+page+"&date=now",
switch date and now
Also lose the comma at end if not needed

Javascript String return inside script tag [closed]

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Closed 8 years ago.
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I'm not so good with regex or trying to return the side part of a string. Can someone help me figure this out. I have a demo below.
str = "<html><head><script>var x = '123';</script></head></html>";
console.log(str)
// should return var x = '123';
Someone wrote a very good regex for stripping tags:
var strippedStr = str.replace(/(<([^>]+)>)/ig,"");
console.log(strippedStr);
Source: http://css-tricks.com/snippets/javascript/strip-html-tags-in-javascript/
I played around a bit with it and found a way with match using groups:
str.match(/(>)([^><]+)(<\/)/m)[2]
result = "var x = '123';"
=> a range (2nd group) beginning by ">" (1st group) and ending with "var x = '123';
I am not sure it'll cover all the cases...

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