TypeScript: How do I define a static array of strings in my directive
10,713
You can declare a static variable in your class.
export class MyDirective implements ng.IDirective {
private static COLOR_LIST = ["#008b8b;", "#00bfff;", "#1766b5;", "#1768b5;", "#17b566;", "#1a7e55;", "#20b2aa;", "#25a071;", "#3b1153;", "#4f59ea;", "#4fc7ea;", "#522424;", "#633939;", "#6617b5;", "#68c4af;", "#7e1a43;", "#80e56f;", "#8b9dc3;", "#a560d6;", "#b56617;", "#b8860b;", "#ba55d3;", "#c0afaf;", "#c0c0c0;", "#c71585;", "#cd5c5c;", "#cec2e5;", "#dc143c", "#dcedc1;", "#f08080;", "#ff4040;", "#ffa500;", "#faebd7;"];
public link: (scope: IMyScope, element: ng.IAugmentedJQuery, attrs: ng.IAttributes, ngModelCtnr: ng.INgModelController) => void;
constructor() {
var that = this;
this.link = (scope: IMyScope, element: ng.IAugmentedJQuery, attrs: ng.IAttributes, ngModelCtnr: ng.INgModelController) => {
scope.colorList = MyDirective.COLOR_LIST;
....
});
};
}
}
However, I would advise you use the constant recipe instead.
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Comments
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NEHAVERMA8 over 1 year
I have a directive for a colorpicker widget. Currently I have defined an array of colors in the scope directly as scope.colorList as shown in the code below.
As per the review comments that I got,I want to declare a static array of colors rather than having to write in scope directly every time the widget is used.
export class MyDirective implements ng.IDirective { public link: (scope: IMyScope, element: ng.IAugmentedJQuery, attrs: ng.IAttributes, ngModelCtnr: ng.INgModelController) => void; constructor() { var that = this; this.link = (scope: IMyScope, element: ng.IAugmentedJQuery, attrs: ng.IAttributes, ngModelCtnr: ng.INgModelController) => { scope.colorList = ["#008b8b;", "#00bfff;", "#1766b5;", "#1768b5;", "#17b566;", "#1a7e55;", "#20b2aa;", "#25a071;", "#3b1153;", "#4f59ea;", "#4fc7ea;", "#522424;", "#633939;", "#6617b5;", "#68c4af;", "#7e1a43;", "#80e56f;", "#8b9dc3;", "#a560d6;", "#b56617;", "#b8860b;", "#ba55d3;", "#c0afaf;", "#c0c0c0;", "#c71585;", "#cd5c5c;", "#cec2e5;", "#dc143c", "#dcedc1;", "#f08080;", "#ff4040;", "#ffa500;", "#faebd7;"]; .... }); }; } }
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NEHAVERMA8 about 8 yearsThank you. I used the constant recipe.