javascript - Color Change not showing in Element? -


i'm trying grid working can use canvas. however, when try change color of elements(as test), nothing shows up. however, when give class dotted border(doesn't work solid, turns black) color trying change works. however, if remove border color goes away well. html:

<!doctype html> <!--       4/28/15        graph part 2 --> <html lang="en"> <head> <title>this appear on tab in browser</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <script src="graph.js" type="text/javascript"></script> <style type="text/css"> *{border: 0; margin:0; padding: 0; } body { margin:0;border:0;padding:0; font-family:"times new roman"; font-size: 12pt; } #header {     width: 36em;     height: 3em;     border: 1px solid black;     margin-left: auto;     margin-right: auto;     text-align: center; } #left {     height: 21em;     width: 7em;     border: 1px solid black;     margin-left: auto;     margin-right: auto;     position: relative;     left: -223px; } #area {     height: 21em;     width: 21em;     border: 1px solid black;     margin-left: auto;     margin-right: auto;     position: relative;     top: -338px;     left: 2px;  } #right {     height: 21em;     width: 7em;     border: 1px solid black;     margin-left: auto;     margin-right: auto;     position: relative;     top: -677px;     left: 228px; } #sketch {     margin: 0px;     font-size: 3em;  } #small_box {     height: 2em;     width: 2em;     border: 1px solid black;     position: relative;     top: -57px;     left: 458px;     font-size: 12pt;     background-color: red;     margin-top: 10px; } .box{border: 1px solid;} </style> </head> <body> <div id="page"> <div id="header"> <div id="sketch">click sketch <div id="small_box"></div> </div> </div> <div id="left"></div> <div id="area"></div> <div id="right"></div> </div> </body> </html>

js:

window.onload = function() {     var array;     var count;     var html;     var i;     = 0;     count = 0;     array = new array(4);     array[0] = getrandomrgb();     array[1] = getrandomrgb();     array[2] = getrandomrgb();     array[3] = getrandomrgb();     document.getelementbyid("small_box").style.backgroundcolor = getrandomrgb();     createcolorchoice(array, "left", "palette", updatecurrentcolor);     createcolorchoice(array, "right", "canvas", updatecanvascolor);     html = createdrawingarea("grid", 20, 30, "box", "startofrow");     document.getelementbyid("area").innerhtml = html;     count = countelementswithidprefixof("grid");     (i = 0; < count; i++)     {         document.getelementbyid("grid" + i).style.backgroundcolor = "red";     } } function colorthebox(prefix, color) {     this.style.backgroundcolor = document.getelementbyid("small_box").style.backgroundcolor; } function createdrawingarea(prefix, rows, columns, classid, start) {     var classinfo;     var count;     var html;     var i;     var j;      html = "";     count = 0;     = 0;     j = 0;      (i = 0; < rows; = + 1)     {         classinfo = classid + " " + start;         j = 0;         (j = 0; j < columns; j = j + 1)         {             html = html + createhtmlelement("div", prefix + count, classinfo, "");             count = count + 1;             j = j + 1;         }         = + 1;     }     return html; } function setcolorchoice() {     var prompt;     prompt = window.prompt("enter color: ")     if (prompt.length > 0)     {         this.style.backgroundcolor = prompt;     } } function updatecanvascolor() {     document.getelementbyid("area").style.backgroundcolor = this.style.backgroundcolor; } function updatecurrentcolor() {     document.getelementbyid("small_box").style.backgroundcolor = this.style.backgroundcolor; } function createcolorchoice(array, containerid, paletteprefix, reference) {     var containerheight;     var containerwidth;     var i;     var newhtml;     = 0;     newhtml = "";     containerid = "" + containerid;     paletteprefix = "" + paletteprefix;     containerheight = document.getelementbyid(containerid).offsetheight;     containerwidth = document.getelementbyid(containerid).offsetwidth;     (i = 0; < array.length; i++)     {         newhtml = newhtml + createhtmlelement("div", paletteprefix + i, "", "");         document.getelementbyid(containerid).innerhtml = newhtml;     }     (i = 0; < array.length; i++)     {         document.getelementbyid(paletteprefix + i).style.height = "3em";          document.getelementbyid(paletteprefix + i).style.width = "3em";         document.getelementbyid(paletteprefix + i).style.border = "1px solid black";         document.getelementbyid(paletteprefix + i).style.marginleft = "auto";         document.getelementbyid(paletteprefix + i).style.marginright = "auto";         document.getelementbyid(paletteprefix + i).style.margintop = "10px";         document.getelementbyid(paletteprefix + i).style.marginbottom = "5px";         document.getelementbyid(paletteprefix + i).style.backgroundcolor = array[i];         document.getelementbyid(paletteprefix + i).onmouseover = reference;         document.getelementbyid(paletteprefix + i).onclick = setcolorchoice;     } } function getcurrentcolor(id) {     var element;     element = document.getelementbyid(id)     return element.style.backgroundcolor } function countelementswithidprefixof(prefix) {     var count;     var i;     = 0;     count = 0;     while (document.getelementbyid(prefix + i) !== null)     {         count = count + 1;         = + 1;     }     return count; } function getrandomrgb() // uses getrandominteger generate random rgb colors. {     var red;     var green;     var blue;     var result;     red = getrandominteger(255);     green = getrandominteger(255);     blue = getrandominteger(255);     result = "rgb(" + red + "," + green + "," + blue + ")";     return result;  } function getrandominteger(upperlimit) // gets random number on less upperlimit {     var result;     result = math.random();     result = result * (upperlimit + 1);     result = math.floor(result);         return result; } function createhtmlelement(elementtype, id, classinfo, content) {     if (elementtype == null) {         elementtype = "";     }     if (id == null) {         id = "";     }     if (classinfo == null) {         classinfo = "";     }     if (content == null) {         content = "";     }     else {         elementtype = "" + trim(elementtype);         id = ' id = ' + '"' + trim(id) + '"';         classinfo = ' class = ' + '"' + trim(classinfo) + '"';         content = "" + trim(content);     }     return "<" + elementtype + id + classinfo + ">" + content + "</" + elementtype + ">"; // returns formatted html statement. } function trim(data) //trim function removes whitespace string. {     var result;     var whitespace;     var start;      if (typeof data === "string") {         whitespace = " \n\r\t\f";         start = 0;          while (start < data.length && whitespace.indexof(data.charat(start)) > -1) {             start = start + 1;         }          var end;         end = data.length - 1;          while (end >= 0 && whitespace.indexof(data.charat(end)) > -1) {             end = end - 1;         }          if (end < start) {             result = "";         }         else {             result = data.substring(start, end + 1);         }     }     else {         result = data;     }     return result; }

this issue is(i believe):

for (i = 0; < count; i++) {   document.getelementbyid("grid" + i).style.backgroundcolor = "red"; }

you can either add content or can set width , height

.box{border: 1px solid; display: inline-block; width: 10px; height: 10px;}

see fiddle in action


Comments

Post a Comment

Popular posts from this blog

php - failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request -

this code i'm using find latitude , longitude of place: function coords($address){ echo $url="http://maps.googleapis.com/maps/api/geocode/json?address=".$address; $json = file_get_contents(urlencode($url)); $data = json_decode($json, true); print_r($data['results'][0]['geometry']['location']['lat']); print_r($data['results'][0]['geometry']['location']['lng']); } however returns warning: failed open stream: http request failed! http/1.0 400 bad request if use above code in simple procedure works fine not in function. note: have tried curl_init()... method produced same result? instead of encoding whole url encode address part. following code work fine $add='jamshoro phase 2'; $url="http://maps.googleapis.com/maps/api/geocode/json?address=".urlencode($add); $json = file_get_contents($url); $data = json_decode($json, true); print_r($data['r
Read more

java - How to filter a backspace keyboard input -

i have code gives message when key number pressed: txtvalueofclause.addeventfilter(keyevent.key_typed, new eventhandler<keyevent>() { @override public void handle(keyevent t) { char ar[] = t.getcharacter().tochararray(); char ch = ar[t.getcharacter().tochararray().length - 1]; if (!(ch >= '0' && ch <= '9')) { system.out.println("the char entered not number"); t.consume(); } } }); now if press on wrong button , press backspace remove it, error message. how can add backspace input if statement? i have found answer: txtvalueofclause.addeventfilter(keyevent.key_typed, new eventhandler<keyevent>() { @override public void handle(keyevent t) { char ar[] = t.getcharacter().tochararray(); char ch = ar[t.getcharacter().tochar
Read more

java - Show Soft Keyboard when EditText Appears -

i have code in android app, alert dialog , keyboard, , when dialog shown want keyboard appear. not , not sure why? here code: final alertdialog.builder alert = new alertdialog.builder(this); alert.settitle("title"); alert.setmessage("message"); final edittext input = new edittext(this); input.setinputtype(inputtype.type_class_number); alert.setview(input); input.setonfocuschangelistener(new view.onfocuschangelistener() { @override public void onfocuschange(view v, boolean hasfocus) { if (hasfocus) { log.i(tag, "in focus"); inputmethodmanager inputmethodmanager = (inputmethodmanager) getsystemservice(context.input_method_service); inputmethodmanager.showsoftinput(input, inputmethodmanager.show_implicit); } } }); but keyboard not appear though edit text in focus, , tell appear why, doesn't come up? thanks in advance.
Read more