javascript - What is Angularjs $compile function 2nd and 3rd parameter -


i have example

<div ng-controller="myctrl">     <div compile-template ng-bind-html="post"></div> </div>

and angularjs code:

angular.module('myapp',[])  .controller('myctrl', function($scope, $sce,$timeout) {     $scope.name = 'world';     $scope.post = $sce.trustashtml("<h1>hello {{name}}</h1>");     $timeout(function(){      $scope.name = "3333";     },3000); });  angular.module("myapp").directive('compiletemplate', ["$compile", "$parse", function($compile, $parse) {     return {         restrict: 'a',         link: function($scope, element, attr) {             var parse = $parse(attr.ngbindhtml);             function value() { return (parse($scope) || '').tostring(); }              $scope.$watch(value, function() {                 $compile(element, null,-9999)($scope);              });         }     } }]);

if carefully, notice function.

$compile(element, null,-9999)($scope);

if make $compile(element)($scope), not work longer.

why that?

here fiddle.

http://jsfiddle.net/bugd67e3/4/

the third argument of $compile maxpriority. the docs:

only apply directives lower given priority (only effects root element(s), not children)

when run $compile(element, null,-9999)($scope);, telling compiler skip directives on element priority greater -9999. why compiletemplate directive not "self-compiled" because default priority 0 , ngbindhtml not run twice, since:

this directive executes @ priority level 0.

when removing third param ngbindhtml compiled , linked again. same thing happen compiletemplate directive well. since have set $watchand $compile called inside of it,

[$rootscope:infdig] 10 $digest() iterations reached. aborting!

error because of infinite "self-compilation". 1 of called "double compilation" issues.

the second argument transclude function (it not play role in case since passed null):

function available directives - deprecated.


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more