), elements using an ID, and classes if you use a '.' to prefix the class name.
Usage to remove our postData tag that indicates that LD+Json is being used: removeStr(value, "postData")
Usage to remove the 'foo' class from a string: removeStrBetween(str, '.foo');
*/
var removeStrBetween = function(str, selector) {
// Create a new container to operate on
var wrapped = $(" " + str + " ");
// Remove the content between the tags.
wrapped.find(selector).remove();
// Return it
return wrapped.html();
}
// Function to truncate and add an elipsis if the text exceeds a certain value
function truncateWithEllipses(text, max) {
return text.substr(0,max-1)+(text.length>max?'...':'');
}
function stripHtml(html){
html.replace(/<[^>]*>?/gm, '');
return html;
}
// Determine if a string has a space
function hasWhiteSpace(s) {
const whitespaceChars = [' ', '\t', '\n'];
return whitespaceChars.some(char => s.includes(char));
}
// ColdFusion like string functions
// ReplaceNoCase, scope is either 'all' or 'one'.
// Gregory Alexander
function replaceNoCase(string,subString,replacement, scope){
if (scope == 'all'){
// i is a RegEx ignore case flag, g is global flag
var regEx = new RegExp(subString, "ig");
} else {
// i is an RegEx ignore case flag
var regEx = new RegExp(subString, "i");
}
// i is an ignore case flag, g is global flag
var regEx = new RegExp(subString, "ig");
var result = string.replace(regEx, replacement);
return result;
}
// ColdFusion like list functions
function listLen(list, delimiter){
// Gregory Alexander
if(delimiter == null) { delimiter = ','; }
var thisLen = list.split(delimiter);
return thisLen.length;
}
function listGetAt(list, position, delimiter, zeroIndex) {
// Gregory Alexander
if(delimiter == null) { delimiter = ','; }
if(zeroIndex == null) { zeroIndex = true; }
list = list.split(delimiter);
if(list.length > position) {
if(zeroIndex){
// Better handling for JavaScript arrays
return list[position];
} else {
// Handles like the CF version without a zero-index
return list[position-1];
}
} else {
return 0;
}
}
function listFind(list, value, delimiter) {
// Adapted from a variety of sources by Gregory Alexander
var result = 0;
if(delimiter == null) delimiter = ',';
list = list.split(delimiter);
for ( var i = 0; i < list.length; i++ ) {
if ( value == list[i] ) {
result = i + 1;
return result;
}
}
return result;
}
// Compares two lists of comma seperated strings. Used to determine if the selected capabilities match the default capabilities for a given role. Function based on the listCompare method found in cflib.
function listCompare(string1, string2){
// Adapted from a variety of sources by Gregory Alexander
var s = string1.split(",");
for(var k = 0 ;k < s.length; k++){
if(string2.indexOf("," + s[k] + ",") ){
return true;
}
}
return false;
}
// Adds a value to a comma separated list. Will not add the value if the list already contains the value.
function listAppend(list, value) {
// Adapted from a variety of sources by Gregory Alexander
var re = new RegExp('(^|\\b)' + value + '(\\b|$)');
if (!re.test(list)) {
return list + (list.length? ',' : '') + value;
}
return list;
}
// Removes a value to a comma separated list. Based on the ListDeleteValue function by Ben Nadel CF fuction https://gist.github.com/bennadel/9753040
var listDeleteValue = function(list, value){
// Adapted from a variety of sources by Gregory Alexander
var values = list.split(",");
for(var i = 0 ; i < values.length ; i++) {
if (values[i] == value) {
values.splice(i, 1);
return values.join(",");
}
}
return list;
}
// URL functions
//
// parseUri 1.2.2
// (c) Steven Levithan
// MIT License
/*
Splits any well-formed URI into the following parts (all are optional):
----------------------
- source (since the exec method returns the entire match as key 0, we might as well use it)
- protocol (i.e., scheme)
- authority (includes both the domain and port)
- domain (i.e., host; can be an IP address)
- port
- path (includes both the directory path and filename)
- directoryPath (supports directories with periods, and without a trailing backslash)
- fileName
- query (does not include the leading question mark)
- anchor (i.e., fragment) */
function parseUri (str) {
var o = parseUri.options,
m = o.parser[o.strictMode ? "strict" : "loose"].exec(str),
uri = {},
i = 14;
while (i--) uri[o.key[i]] = m[i] || "";
uri[o.q.name] = {};
uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {
if ($1) uri[o.q.name][$1] = $2;
});
return uri;
};
parseUri.options = {
strictMode: false,
key: ["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"],
q: {
name: "queryKey",
parser: /(?:^|&)([^&=]*)=?([^&]*)/g
},
parser: {
strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
}
};
// Dump function. Use like you would with cfdump.
// function to dump out a a javascript object.
function mydump(arr,level) {
var dumped_text = "";
if(!level) level = 0;
var level_padding = "";
for(var j=0;j \"" + value + "\"\n";
}
}
} else {
dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
}
console.log(dumped_text);
}
How to make the perfect social media sharing image - part 1 Background
by Gregory Alexander
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Have you wondered how to get a perfect image from your blog when you share your post on social media? I have... and after spending several weeks on this; I think that I have managed to figure it out...
Over the course of the last few months, I have spent quite a bit of time trying to figure out how to effectively share my content on social media sites. I had thought to simply share the image at the top of each post, but I didn't get the size of the image right. The proper image size was different for each social media platform. Finding the proper sizes between the social media platforms was daunting. The information available on the net is often contradictory, and constantly subject to change. Figuring out the proper approach necessitates aiming at a constantly moving target. What worked several months ago might not work the same now. After failing at my initial attempt; I reverted the Galaxie Blog code and used the same default social media image that tended to work for every post. While I was sick of looking at the same mountain logo on every social media post (I assume along with my three regular readers), I had more pressing tasks to deal with. There have been a lot of other features that I wanted to put into this blog first, and wanted to wait until I could take a few weeks to devote to learn by trial and error to get this social media image sharing thing right. There are also other considerations other than just manipulating the image. The social media platforms need to have certain meta tags. After spending the last couple of weeks I found a good approach to solve this. In the next several posts, I will share my journey with you and show you my Galaxie blog implementation. Along the way, I'll provide some ColdFusion scripts for you to resize your own images for social media sharing on your own. Additionally, I hope to provide you some helpful tips.
Tags
ColdFusion
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Gregory Alexander
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Hi, my name is Gregory! I have several degrees in computer graphics and multimedia authoring, and I have been developing enterprise web applications for the last 25 years. I love web technologies and the outdoors and am passionate about giving back to the community.
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This entry was posted on October 28, 2019 at 1:29 PM and has received 2471 views.
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