angular

问题 I am working on angular2 I have created service and inject those service using @Inject in component. I am confuse with the use of @Injectable() in service itself and what diff it makes. 回答1: @Inject() is a manual mechanism for letting Angular 2 know that a parameter needs to be injected @Injectable() lets Angular 2 know that a class can be used with the dependency injector. @Injectable() is not strictly required if the class has other Angular 2 decorators on it. What is important is that any

问题 I am working on angular2 I have created service and inject those service using @Inject in component. I am confuse with the use of @Injectable() in service itself and what diff it makes. 回答1: @Inject() is a manual mechanism for letting Angular 2 know that a parameter needs to be injected @Injectable() lets Angular 2 know that a class can be used with the dependency injector. @Injectable() is not strictly required if the class has other Angular 2 decorators on it. What is important is that any

问题 I am working on angular2 I have created service and inject those service using @Inject in component. I am confuse with the use of @Injectable() in service itself and what diff it makes. 回答1: @Inject() is a manual mechanism for letting Angular 2 know that a parameter needs to be injected @Injectable() lets Angular 2 know that a class can be used with the dependency injector. @Injectable() is not strictly required if the class has other Angular 2 decorators on it. What is important is that any

问题 Ag-grid applies defaultColDef formatting (cellStyle and cellRenderer) perfectly using ngOnChanges when the table initially receives async-retrieved data. However, if the component containing the grid is hidden and then re-initialized via an *ngIf condition, the table is re-populated with the correct data, but defaultColDef formatting is not reapplied even though the ngOnChanges is triggered again just as before, and this.gridOptions.defaultColDef = this.defaultColDef; is set within the

问题 Ag-grid applies defaultColDef formatting (cellStyle and cellRenderer) perfectly using ngOnChanges when the table initially receives async-retrieved data. However, if the component containing the grid is hidden and then re-initialized via an *ngIf condition, the table is re-populated with the correct data, but defaultColDef formatting is not reapplied even though the ngOnChanges is triggered again just as before, and this.gridOptions.defaultColDef = this.defaultColDef; is set within the

问题 Ag-grid applies defaultColDef formatting (cellStyle and cellRenderer) perfectly using ngOnChanges when the table initially receives async-retrieved data. However, if the component containing the grid is hidden and then re-initialized via an *ngIf condition, the table is re-populated with the correct data, but defaultColDef formatting is not reapplied even though the ngOnChanges is triggered again just as before, and this.gridOptions.defaultColDef = this.defaultColDef; is set within the

问题 I am having a CSS file which has some variable define @red: red-color @yello: yellow-color .... I can use this variable in CSS file, But I want to know how can I access them in my JS file. 回答1: Assuming you're using native CSS variables and not some preprocessor, take a look at this page. At the bottom there's a section called Values in JavaScript which describes how to access native CSS vars in JS code. getComputedStyle(element).getPropertyValue("--my-var"); However if you are using a CSS

问题 I am having a CSS file which has some variable define @red: red-color @yello: yellow-color .... I can use this variable in CSS file, But I want to know how can I access them in my JS file. 回答1: Assuming you're using native CSS variables and not some preprocessor, take a look at this page. At the bottom there's a section called Values in JavaScript which describes how to access native CSS vars in JS code. getComputedStyle(element).getPropertyValue("--my-var"); However if you are using a CSS

问题 I'm a newbie to angular, Looking forward to create a table which will render large amount of data. Below are the features in the table I'm trying to achieve. Can someone guide how to approach this? Is there any open source project which implemented it? Or good resources Generic Search button to search in all columns and display results in table User can show and hide certain columns Pre populated filtering dropdown on selective columns. Can select multiple options in one column (like in

问题 I'm a newbie to angular, Looking forward to create a table which will render large amount of data. Below are the features in the table I'm trying to achieve. Can someone guide how to approach this? Is there any open source project which implemented it? Or good resources Generic Search button to search in all columns and display results in table User can show and hide certain columns Pre populated filtering dropdown on selective columns. Can select multiple options in one column (like in