javascript

[Solved] How to get count values from nested array of objects in react [closed]

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const data = [ { id:4, name:’sam’,stats:[{id:1, partnerId:4, applicatiions:4, drafts:5},{id:2, partnerId:4, applicatiions:1, drafts:2}]}, { id:5, name:’kam’,stats:[{id:1, partnerId:5, applicatiions:2, drafts:3}]}, { id:6, name:’jam’,stats:[]}, { id:7, name:’ram’,stats:[{id:1, partnerId:7, applicatiions:9, drafts:5},{id:2, partnerId:7, applicatiions:2, drafts:5}]} ] const items = data.map(item=> {return {…item, applicatiions: item.stats.reduce((partialSum, stat) => partialSum + stat.applicatiions ,0), drafts: item.stats.reduce((partialSum, stat) => partialSum + stat.drafts ,0)}}); console.log(items.map(({stats, … Read more

[Solved] Double digit 30 seconds countdown

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This is how you can proceed: <script type=”text/javascript”> var timeleft = 30; var downloadTimer = setInterval(function(){ timeleft–; document.getElementById(“countdowntimer”).textContent = “:” + ((timeleft >= 10) ? timeleft : (“0” + timeleft)); if(timeleft <= 0){ clearInterval(downloadTimer); window.location.replace(“next_slide.html”); } },1000); </script> 0 solved Double digit 30 seconds countdown

[Solved] How could a viable transformation look like that does convert a product-name into a valid HTML id-attribute value? [closed]

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You can try this- const data = [ “2-inch leg extension”, “2′ x 8′ Overhead Garage Storage Rack”, “4 Drawer Base Cabinet 16-1/2\”W x 35\”H x 22-1/2\”D”, “24\” Long Tool Bar w/ Hooks Accessory” ]; const res = data.map(str => str.replace(/[^a-z\d\-_]/ig, ”)); console.log(res); If you need any prefix with the ID then add it like- … Read more

[Solved] Summarize data in array of objects by common date [closed]

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Try this function function mapData(data) { let result = []; data.forEach(element => { let t = element.time + 9200; let substr = t.toString().substr(0, 8); if(!result[substr]) result[substr] = 0; result[substr] += element.count; }); let returnResult = []; result.forEach((element, index) => returnResult.push({ time: index, count: element }) ); return returnResult; } 2 solved Summarize data in array … Read more

[Solved] How to secure javascript code from being run on other domain (stolen) ? need more ideas

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No matter how complex you make your code, it can always be read, if necessary with abstract interpretation, i.e. automatically capturing the essence of your code. Code without knowledge of internals, variable names (I assume you’re already using minimization, for example with the YUI compressor), documentation, support, and generalization is worthless for anyone else. If … Read more

[Solved] REGEX – Get specific values [closed]

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If this is an exercise in using Regular Expressions, so you really want to use a Regular Expression to solve it, you can do something like this: regex = /^(PL|PH|MH|M)$/ choices = [“PL”, “PH”, “M”, “MH”, “other”, “invalid”, “value”] index = Math.floor(Math.random() * choices.length) input = choices[index] console.log(“Testing”, ‘”‘+input+'”‘) x = input.match(regex) if (x) { … Read more

[Solved] Difference between getElementById and createElement in javascript? [closed]

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The main difference is that getElementById will get an element from the DOM by it’s ID attribute, and createElement will create an entirely new DOM element. Let’s say you had a page with the following HTML: <!doctype html> <html> <head> </head> <body> <div>Hello, World!</div> <div id=”message”>What a nice day!</div> </body> </html> And then you had … Read more

[Solved] Replacing live with on function [closed]

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You missed the selector parameter that allows you to use delegated events. $(document).on(‘click’, ‘#remove’, function() { $(this).closest(‘div.container’).remove(); }); Where document can be replaced by any #remove container that exists at binding time solved Replacing live with on function [closed]

[Solved] To get empty array

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The only time you return [] is when the condition (input[i] == 0) matches on any element. However, given the name of the function you only want to skip such elements. If and only if the argument contains no other elements but 0, return the empty array. So the following modified code will work: function … Read more

[Solved] need to create new array called result with key/value from posts and inside that reviews array with user and comment key/value objects

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Use map with filter: let posts = [{ “id”: 101, “title”: “Some post title” }, { “id”: 102, “title”: “Some Another post title” }, { “id”: 103, “title”: “Some Best post title ever” } ] let reviews = [{ “postId”: 101, “user”: “Chris”, “comment”: “Great post!” }, { “postId”: 101, “user”: “Jason”, “comment”: “Worth reading.” … Read more

[Solved] Is it Possible ? To check student information by Roll no: using simple webpage in html + javascript

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Take this: var studentArray = [{rollno:’rollno1′, fname:’fname1′, marks:’marks1′, institute:’institute1′, percentage: ‘percentage1′},{rollno:’rollno2′, fname:’fname2′, marks:’marks2′, institute:’institute2’, percentage: ‘percentage2’}]; document.getElementById(“search”).addEventListener(‘click’, function() { var roll = document.getElementById(“roll”).value; var student, info; for (i = 0; i < studentArray.length; i++) { student = studentArray[i]; if (student.rollno == roll) { info = “First Name: ” + student.fname + “<br />”; info += … Read more