angular8

问题 disclaimer: Yes, I saw that there are more "The template specified for component AppComponent is not a string" related questions but none of them describes the specific problem I'm experiencing. I get this runtime error when I compile without AoT in ng build : Uncaught Error: The template specified for component AppComponent is not a string This error actually make sense because in the generated bundled code (main.ts) I see: template: __webpack_require__(/*! raw-loader!./app.component.html */

问题 disclaimer: Yes, I saw that there are more "The template specified for component AppComponent is not a string" related questions but none of them describes the specific problem I'm experiencing. I get this runtime error when I compile without AoT in ng build : Uncaught Error: The template specified for component AppComponent is not a string This error actually make sense because in the generated bundled code (main.ts) I see: template: __webpack_require__(/*! raw-loader!./app.component.html */

问题 <input type=checkbox [(ngModel)]="myCheckBox" (ngChanged)="!myCheckBox"> for example, if I want the code above to pass the "checked" value, which is "true or false" to other components, so its contents can react based on "myCheckBox" true | false, and they are not in a parent child relationship, is there any way I can do that? Please help, really apprecipate it!!!! 回答1: You can implement it by different methods. For example: with EventEmitter or rxjs( Subject, BehaviourSubject); In my example

问题 I have uploaded a file 14MB to S3 in chunks (5MB) each and also using spark-md5 calculated the hash of each chunk. The individual hash of each chunk (generated by spark-md5) is matching with ETag of each chunk uploaded to S3. But the ETag hash generated by doing full upload to S3 is not matching with locally calculated hash generated by spark-md5. Below are the steps for local hash: Generate hash (generated by spark-md5) of each chunk Join the hash of each chunk Convert to hex Calculated hash

问题 Is there a way to refer to Formbuilder members names in a strongly type fashion? If form builder names change, then the get functions below will not notice, and not display any compilation error. This can create issues in program functionality. Need to refer to formbuilder control members in a clean way. { this.customerForm = this.formBuilder.group({ 'firstName': [null, [Validators.required,Validators.maxLength(50)]], 'phoneNumber': [null, [Validators.required,Validators.maxLength(50)]],

问题 We have a Component with Typescript business logic, and then Html formatting. The marketing department wants to create a different html format/orientation, with Same Business logic. To extend the Same business Typescript logic, we are utilizing Inheritance and extends as quick and easy way. For html formatting, say Div A, Div B, Div C, will be arranged in different orders and formats, with some additional changes . We have NgTemplate and NgTemplateOutlets for each Div defined in the original

问题 I have an *ngFor which iterates through 50 members. Each of these members has an image gallery which when you click on the image loops through the photos. Everything works however the styling means that you can see the top of the 3 previous members cards as the margin on each is -10px, -20px, -30px The problem is that when you click on the gallery you can see the preceeding galleries iterating through the photos, which is also not desirable, I just want to iterate on the current top level

问题 I need to iterate through all controls in Formbuilder, and children formbuilders to clear validators and updateValueAndValidity. How can I update answer from here to do so ? Angular 2: Iterate over reactive form controls Object.keys(this.form.controls).forEach(key => { this.form.controls[key].clearValidators(); this.form.controls[key].updateValueAndValidity(); }); This form here has formbuilders within formbuilders, etc. The answer above only affects top level children, not subchildren, etc

问题 I need to iterate through all controls in Formbuilder, and children formbuilders to clear validators and updateValueAndValidity. How can I update answer from here to do so ? Angular 2: Iterate over reactive form controls Object.keys(this.form.controls).forEach(key => { this.form.controls[key].clearValidators(); this.form.controls[key].updateValueAndValidity(); }); This form here has formbuilders within formbuilders, etc. The answer above only affects top level children, not subchildren, etc

问题 How should I address the error message: Failed to compile /.../SoftwareLicenseCodes/index.tsx (14,20): Type declaration of 'any' loses type-safety. Consider replacing it with a more precise type. This error occurred during the build time and cannot be dismissed. See the following code: import * as React from 'react'; import './SoftwareLicenseCodes.css'; interface SoftwareLicenseCodesProps { } interface SoftwareLicenseCodesState { count: string; oneTimeUsage: boolean; duration: string;