JavaScript DHTML/Dojo toolkit/exist
Содержание
Check class existance
<source lang="html4strict">
<html>
<head> <style> .myClass { color : #ff0000; } </style> <script type="text/javascript"> var djConfig = { baseScriptUri : "js/dojo/" }; </script> <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script> <script type="text/javascript"> function f(){ alert(dojo.hasClass("myDiv", "myClass")); } </script> </head> <body onLoad="f();">
myDiv
</body>
</html>
</source>
Check existance for property
<source lang="html4strict">
<html>
<head> <script type="text/javascript"> var djConfig = { baseScriptUri : "js/dojo/" }; </script> <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script> </head> <body> <script> var myObj = {myProp:123}; alert(dojo.exists("myObj.myProp")); </script> </body>
</html>
</source>
Check function existance
<source lang="html4strict">
<html>
<head> <script type="text/javascript"> var djConfig = { baseScriptUri : "js/dojo/" }; </script> <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script> </head> <body> <script> var myObj = {myProp:123}; alert(dojo.exists("myObj.myFunc")); </script> </body>
</html>
</source>
Search property with exist function
<source lang="html4strict">
<html>
<head> <script type="text/javascript"> var djConfig = { baseScriptUri : "js/dojo/" }; </script> <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script> </head> <body> <script> var myObj = {myProp:123}; alert(dojo.exists("myProp", myObj) ); </script> </body>
</html>
</source>