you must have a variable at class level like this export class SampleClass implements OnInit { data: any ; constructor() { } getData() { let request = new XMLHttpRequest(); request.open(‘GET’, ‘https://mywebsite.com/data.json’); request.onload = this.manageData.bind(this); request.send(); } resolveData(ev){ this.data = JSON.parse(ev.target.response); console.log(this.data); } } solved Why can’t I access a variable for data binding?
Simplest answer: html { max-width: 1024px } solved HTML– Faking the size of the browser window (to be smaller or larger)
The same as: var result = defer(); var done; done is just another variable 1 solved What is purpose of done in AngularJS
You can use the map function for the array of objects and then a for loop for the inner property “color” of each object. var fruits = [{ name: “apple”, color: [“green”, “red”] }, { name: “banana”, color: [“yellow”] }]; var colors = []; fruits.map(function(fruit) { for (var i = 0; i < fruit.color.length; i++) … Read more
This is your PHP-loop in javascript. Pretty much the same… Just remember to use the <script> javascript code here </script> tag to tell the browser that this is javascript for (a = 1; a < 2; a++) { //Your stuff inside here } To append HTML to a div you can use the following code: … Read more
document.getElementById(“test”).innerHTML = “Who”; NOT document.getElementIdBy(“test”).innerHTML = “Who”; 0 solved Javascript code will not run at all
var songTimer = [0,12,49]; audio.addEventListener(“timeupdate”, function(){ if (songTimer.includes(audio.currentTime)) { // do something } }); solved javascript: How to trigger an if statement when a variable equals a number in an array? [closed]
text = input.replace(/(KEYWORD)\(([^)]+)\)/, “$1 $2”) You realize your example has a space after the keyword yeah? Maybe this instead: text = input.replace(/(KEYWORD)\s*\(([^)]+)\)/, “$1 $2”) 2 solved Variable inside a REGEX
You need to handle new lines and you don’t need global search, because capturing must stop only before first abc appearance, so remove m and g flag and add singleline flag s: const str = `test abc abc`; const result = str.match(/.*?(?=abc)/s); console.log(result); 3 solved javascript regex lookahead why abc match? [closed]
From the formula of polygon, Area of ploygon = [(x1y2-x2y1) + (x2y3-x3y2) + …. + (x(n-1)yn – y(n-1)xn)]/2 Try, var arr=[ [10.075854059674523, 76.32832467556], [10.079825860518895, 76.33338868618011], [10.076234340596953, 76.33806645870209], [10.07065684212598, 76.33806645870209], [10.068924417668397, 76.33175790309906] ]; var sum=0; for(var i=0,l=arr.length-1;i<l;i++){ sum+=(arr[i][0]*arr[i+1][1]-arr[i+1][0]*arr[i][1]); } alert(‘The Area of Ploygon is:’+(sum/2)); Demo 6 solved how to calculate area of polygon on a map? … Read more
The value of this changes depending upon how the function was invoked; Collection.prototype.onOpen(); // `this` refers to `Collection.prototype` // vs var c = new Collection(); c.onOpen(); // `this` refers to `c` // vs var o = {}; Collection.prototype.onOpen.call(o); // `this` refers to `o` // vs var foo = Collection.prototype.onOpen; foo(); // `this` could be `window` … Read more
You can use the function rand() : $str = str_replace(‘ ‘, rand(0, 10000), $str); Or did you mean a random value from your list? In this case: $list = array(“value1”, “value2”); $str = str_replace(‘ ‘, array_rand($list, 1), $str); 1 solved replace spaces with randam values [closed]
I hope this answer is what you are looking for: You can make an array with your answers, and then check to see if the given answer is inside the array. const array = [‘test’, ‘test2’, ‘test3’]; if (array.includes(an.value.toLowerCase() ) ) … Something else, you are missing a semicolon in your else { … }. … Read more
Your pattern requires one character of each type, in order. If you want to match all the characters, put them in a single character class, and quantify it with * pattern=”[a-ZA-Z0-9._]*” solved Check if input field can only consist of lower and uppercase letters, numbers and the characters . and _
This is an interesting problem, In javascript we dont have any straight approach with which we can detect the type or attribute change in javascript. I had same kind of problem and then after some studies, I found that this could be done with Mutation observer. In this code I have created an extension method … Read more