I have to replace all the special character form the html and i have created an array of special character having key value pairs of special characters and class name .
But this is not working . I have tried and the following is the code and fiddle link.
var SpClass = new Array();
SpClass["&"] = "ampClass";
function temp() {
var str = "";
var tempLen = SpClass.length;
var k = 0;
var htmlForRemoveChar = $("#test").html();
for (var splChar in SpClass) {
if (k > tempLen) {
$("#test").html(htmlForRemoveChar);
}
var tempChar = "/" + splChar + "/g";
alert(htmlForRemoveChar);
htmlForRemoveChar = htmlForRemoveChar.replace(tempChar, '<span class="specialChar "' + SpClass[splChar] + '"">W</span>');
alert(htmlForRemoveChar);
k++;
}
$("#test").html(htmlForRemoveChar);
}
<div id="test">this is test & i am doing testing</div>
<input type="button" onclick="temp();" value="Remove&">
http://jsfiddle.net/aps123/y4McS/1/
You just need to change this line:
var tempChar = "/" + splChar + "/g";
To:
var tempChar = new RegExp(splChar, 'g');
At present you're replacing a literal String, e.g. '/a/g'. If you need to dynamically create the contents of a regex then you need to use RegExp. If the contents is static then you can use a regex literal.
Try replacing replace(tempChar with replace(new RegExp(splChar, 'g').
It looks like you are using a string literal, not a regex literal. A regex literal is like this:
var x = /x/g;
Related
I have a passage of text, which might have multiple of the same word in it. Whenever this word appears, I want to replace it with itself, but wrapped in a div so that I can apply styles and add some extra text.
I have got this working for the first instance of the word:
var definition = glossaryList[index].definition;
var termStart = textAsLower.search(termAsLower);
var termEnd = term.length + termStart;
var replacedText = addDefinitionToText(textContent, term, definition, termStart, termEnd);
function addDefinitionToText(textContent, term, definition, termStart, termEnd) {
var textStart = textContent.substring(0, termStart);
var termInText = textContent.substring(termStart, termEnd);
var textEnd = textContent.substring(termEnd);
var replacedTerm = '<span class="has-definition">' + termInText;
replacedTerm += '<div class="attached-definition">';
replacedTerm += '<div class="defintion-title">' + term + '</div>';
replacedTerm += '<div class="definition-text">' + definition + '</div>';
replacedTerm += '</div>';
replacedTerm += '</span>';
return textStart + replacedTerm + textEnd;
}
I've tried putting this function into a while loop and counting up, but it is causing me issues and freezing or not returning what I am expecting:
while(something.toLowerCase().search(termAsLower)) {
var something = textAsLower.substring(termEnd);
termStart = something.search(termAsLower);
termEnd = term.length + termStart;
replacedText = addDefinitionToText(something, term, definition, termStart, termEnd);
something = replacedText.substring(termEnd);
}
Does anyone have a solution to this? Ideally I would actually like a different method to .search(), which finds all instances not just the first, but my searches haven't been too fruitful.
Thanks!
You can simply use regex to achieve what you want:
var searchWord = "tag";
var textStr = "HTML tag is used for scripting. Tag can also be self-closing.";
// case-insensitive regex
var re = new RegExp(searchWord, "gi");
textStr = textStr.replace(re, '<' + searchWord + '>');
// case-sensitive search
var re = new RegExp(searchWord, "g");
textStr = textStr.replace(re, '<' + searchWord + '>');
I did something like this before. I split the text by spaces and put that array into foreach and edit. Here's an exapmle code
if(text.includes("http")){
var returnString = '';
text.split(" ").forEach(function(link) {
if(link.includes("http")){
returnString += '<a target="_blank" style="color:white" href="' + link + '">here</a> ';
}else{
returnString += link + " ";
}
});
text = returnString;
A regular expression with the String replace method can solve this fairly easily.
This function will return a new string with the word and definition wrapped.
I have used a template literal to make things a bit cleaner but they are unsupported in IE.
function wrapWordWithDefinition(sentance, word, definition) {
var template = `<div>
<div class="attached-definition">
<div class="defintion-title">${word}</div>
<div class="definition-text">${definition}</div>
</div>
</div>`;
// global and case insensitive
var re = new RegExp(word, 'gi');
return sentance.replace(re, template);
}
var sentance = "This will replace word, when word is encountered";
var myword = "word";
var definition = "The definition of the word";
var result = wrapWordWithDefinition(sentance, myword, definition);
console.log(result)
For further reading on regular expressions: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
I have a data like this,
var str = "#data time #city";
My goal is to make this as
var str = <a src="www.test/data">#data</a> time <a src="www.test/city">city</a>
I mean in my string where ever I found # its next value i.e data should be set as a param to the link www.test/{{param}} and should be surrounded with a link.Can any one suggest help.Thanks.
For this case, the String.replace() function will help you:
var str = "#data time #city"
str = str.replace(/#(\S+)/g, '#$1')
output.textContent = str
clickable.innerHTML = str
#output { font-family: courier }
<div id="output"></div>
<div id="clickable"></div>
The following code converts you data to the expected output.
The document.write(..) are for debug.
var data='#data time #city';
var hashtags = data.match(/#\S+/g);
document.write('before: ' + data + '</br>');
for (j = 0; j < hashtags.length; j++) {
// remove # from hashtag
var tag = hashtags[j].substring(1, hashtags[j].length);
// create the link
var link = '< a src="www.test/' + tag + '>#' + tag + '< / a > ';
// replace hashtag with link
data=data.replace(hashtags[j], link);
}
document.write('after: ' + data);
k = "hello'S";
var sym = k.replace(/\'/g,"\\'");
I want my output to look like: hello's
I am getting it now as hello\'s
From your comment (with various typos fixed):
var k = "hello's";
var sym =k.replace(/\'/g,'\\\'');
onclick = "gosymbol(\''+k+'\',event);
by doing this i am getting output as hello\'s but i wanted it to be like hello's
So what you're trying to do is embed a string in an onclick handler as text. That's not a good idea, not least because of the quoting hassles. Instead:
someElement.onclick = gosymbol.bind(someElement, k);
Live Example:
var k = "hello's";
var someElement = document.getElementById("some-element");
someElement.onclick = gosymbol.bind(someElement, k);
function gosymbol(arg, e) {
alert("gosymbol got: [" + arg + "], event type: " + e.type);
}
<div id="some-element">Click me</div>
If for some reason it has to be a string, then the problem is that you didn't have the right number of ' characters in your onclick line, and had k in the string literally (which means you weren't getting the output you described), and weren't using sym:
var k = "hello's";
var sym = k.replace(/'/g, "\\'");
onclick = "gosymbol('" + sym + "',event);";
I do not suggest doing that, but if that's what you want to do...
Live Example:
var someElement = document.getElementById("some-element");
var k = "hello's";
var sym = k.replace(/'/g, "\\'");
someElement.setAttribute("onclick", "gosymbol('" + sym + "',event);");
function gosymbol(arg, e) {
alert("gosymbol got: [" + arg + "], event type: " + e.type);
}
<div id="some-element">Click me</div>
I have the following line:
var myCustomVariable = '3434';
urlpath = '/people/myCustomVariable/folders/byid/'
I want to render the value of myCustomVariable in the urlpath but being new to JS I am unable to figure this out. I tried doing the following but didn't work:
"+myCustomVariable+"!"
What am I doing wrong?
You use the + operator:
var myCustomVariable = '3434';
urlpath = '/people/' + myCustomVariable + '/folders/byid/'
This is called "concatenation" or (because we're dealing with strings) "string concatenation."
Your "I tried doing the following..." uses double quotes and a !. I'm not sure where the ! comes from, but in JavaScript, if you open a string with a single quote, you must end it with a single quote; and if you open it with a double quote, you must end it with a double quote.
Just do the concatenation of strings like this:
var myCustomVariable = '3434';
urlpath = '/people/' + myCustomVariable + '/folders/byid/'
When you do this:
"+myCustomVariable+"
That represents a string, not your variable. Your variable is
myCustomVariable
Without the " aroud it
See this:
var myCustomVariable = '3434';
//This
urlpath = '/people/' + myCustomVariable + '/folders/byid/'
//Same than
urlpath = '/people/' + '3434' + '/folders/byid/'
//Same than
urlpath = '/people/3434/folders/byid/'
But
var myCustomVariable = '3434';
//This
urlpath = '/people/' + '+myCustomVariable+' + '/folders/byid/'
//Same than
urlpath = '/people/+myCustomVariable+/folders/byid/'
I want to check if a string is ending with ".php" extension, if not I want to add .html at the end. I have already tried various "slice" methods without success.
You can use Regex for that
var string1 = "www.example.com/index";
var newString = !/\.php$/i.test(string1)? string1+".html": string1;
// newString = "www.example.com/index.html"
Use (yourstring + '.html').replace(/\.php\.html$/, '.php') to do that:
var str1 = 'one.php';
var str2 = 'two';
var str3 = '.php.three.php';
var str4 = '.php.hey';
console.log((str1 + '.html').replace(/\.php\.html$/, '.php')); // Prints one.php
console.log((str2 + '.html').replace(/\.php\.html$/, '.php')); // Prints two.html
console.log((str3 + '.html').replace(/\.php\.html$/, '.php')); // Prints .php.three.php
console.log((str4 + '.html').replace(/\.php\.html$/, '.php')); // Prints .php.hey.html
Or perhaps:
function appendHTML(string) {
var html = string;
if (string.lastIndexOf('.php') === (string.length - 4)) {
html += '.html';
}
return html;
}
Well, slice() works ok for this task.
var s = "myfile.php";
if (s.slice(-4) != ".php")
s = s.slice(0, -4) + ".html";
Use regular expression to solve your problem.
/.php$/ is a regular expression that checks to see if a string ends with '.php'
For more information read: http://www.w3schools.com/js/js_obj_regexp.asp
Example Code:
str = "http://abc.com";
str = ( /\.php$/.test( str ) ) ? str : str + '.html'; // this is the line you want.
str === "http://abc.com.html" // returns true
Try something like this
function isPHP(str)
{
return str.substring(str.length - 4) == ".php";
}
Then you could do
str = isPHP(str) ? str : str + ".html";