if the specified expression is false, an errorMessage is shown in the red popup at the top right corner of the screen
expression | any | truthy value to assert the expression, falsy - if assertion fails |
errorMessage | string | an error message that will be shown in the red popup |
gantt.attachEvent("onLoadEnd", function(){
gantt.assert(gantt.getTaskCount(), "no data loaded");
});
dhtmlxGantt codebase uses gantt.assert to detect an invalid state of the component
Error display can be changed using the show_errors config.
Errors can be traced programmatically, using the onError event.
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