javascript

[Solved] How can I make a point and let it disappear when making a new point

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You can use ctx.clearRect(0, 0, c.width, c.height); to clear the content. function showCoords(event) { i++; var x = event.clientX; var y = event.clientY; var c = document.getElementById(“myCanvas”); var ctx = c.getContext(“2d”); ctx.clearRect(0, 0, c.width, c.height); console.log(x,y); var coords = “X coords: ” + x + “, Y coords: ” + y; document.getElementById(“demo”).innerHTML = coords; if(i%2==0) … Read more

[Solved] Obtain the value variable [closed]

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You can use document.querySelector to get elements on the page, with attribute selector. querySelector and querySelectorAll accepts CSS selectors like jQuery. console.log(document.querySelector(‘[class*=”sample-row”] .co-1’).innerText) console.log(document.querySelector(‘[class*=”sample-row”]’).className.replace(/sample-row-/, ”)) <div class=”sample-row-xxxxxx”> <div class=”co-1 xxxxxxx”>value</div> </div> the selector will find any element that have sample-row somewhere inside class attribute that have .col-1 element inside. If you’re know for sure that … Read more

[Solved] How to get combo value dynamically

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1) I added id attribute to the select box id=”choose” var jsonc = [ { ID : 0, VALUE : “United State” },{ ID : 1, VALUE : “United Kingdom” },{ ID : 2, VALUE : “Afghanistan” },{ ID : 3, VALUE : “Aland Islands” },{ ID : 4, VALUE : “Albania” } ]; var … Read more

[Solved] copy all the properties of config to obj unless they already exist in obj

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var obj ={ name : ‘x’, age:50, color : ‘clo’};var config ={ name:’suhaib’,id:25}; copyif(obj,config); function copyif(obj, config) { for (var prop in obj) { if (obj.hasOwnProperty(prop)) { if(!config.hasOwnProperty(prop)) config[prop] = obj[prop]; } } console.log(config); } var obj ={ name : ‘x’, age:50, color : ‘clo’};var config ={ name:’suhaib’,id:25}; copyif(obj,config); function copyif(obj, config) { for (var … Read more

[Solved] JavaScript String Handling

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Your question seems to be more about PHP than Javascript, based on the code snippet you provided. Basically, you might want to escape the apostrophes with a backslash character. onclick=”(method(‘<?php echo $variable; ?>’))” would then become something like this perhaps: onclick=”(method(‘<?php echo addslashes($variable); ?>’))” … and please remove the parenthesis you have surrounding the onclick … Read more

[Solved] Regex – validate decimal number – max 50 digits excluding decimal | decimal optional | any no. of digits allowed before or after decimal [closed]

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Is that what you want? ^(?:\d{1,50}|(?=.{3,51}$)\d+\.\d+)$ Demo & Explanation var test = [ ‘12345678901234567890123456789012345678901234567890’, ‘12345.123456789012345678901234567890123456789012345’, ‘123456.7890’, ‘123456789012345678901234567890123456789012345678901’, ‘12345678901234567890123456789012345678901234567890.1’ ]; console.log(test.map(function (a) { return a+’ :’+/^(?:\d{1,50}|(?=.{3,51}$)\d+\.\d+)$/.test(a); })); 2 solved Regex – validate decimal number – max 50 digits excluding decimal | decimal optional | any no. of digits allowed before or after decimal [closed]

[Solved] Prevent Multiple Selections of Same Value for each table row

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I use the same code in the link you provided but it’s contexted to the table row : $(“select”).change(function() { var tr = $(this).closest(“tr”); tr.find(“select option”).attr(“disabled”,””); //enable everything //collect the values from selected; var arr = $.map ( tr.find(“select option:selected”), function(n) { return n.value; } ); //disable elements tr.find(“select option”).filter(function() { return $.inArray($(this).val(),arr)>-1; //if value … Read more

[Solved] How to pass java variable to java script function [closed]

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I am not exactly sure what you are trying to do, but you could try something like this (since you are alluding to passing DIRECTLY from Java to Javascript) … (only applies to JDK1.6+) … ScriptEngineManager mgr = new ScriptEngineManager(); ScriptEngine engine = mgr.getEngineByName(“JavaScript”); String javascript = “3+2*(4+5)”; System.out.println(engine.eval(javascript)); p.s. Make sure you have previously … Read more

[Solved] Search string inside array javascript

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Your problem lies in the use of consecutive if statements without chaining them together to make a complete check. Doing it your way, the code actually completely disregards all the if statements, but the last one. So, if iledefrance.indexOf(departement) != -1 gives false, it’will always execute the code inside else, meaning it’ll set region = … Read more