Angular html property的值如何被更新的
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Angular html property的值如何被更新的
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html页面里有一个input element,通过语法[(ngModel)]双向绑定到model hero的name字段。
一旦往input field里输入新的值之后,触发core.js的refreshView方法,里面执行templateFn方法:
hero-detail.component.html对应一个方法:HeroDetailComponent_div_2_Template:
上图的方法负责更新element的property:
/*** @license* Copyright Google LLC All Rights Reserved.** Use of this source code is governed by an MIT-style license that can be* found in the LICENSE file at https://angular.io/license*/ /*** Update a property on a selected element.** Operates on the element selected by index via the {@link select} instruction.** If the property name also exists as an input property on one of the element's directives,* the component property will be set instead of the element property. This check must* be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled** @param propName Name of property. Because it is going to DOM, this is not subject to* renaming as part of minification.* @param value New value to write.* @param sanitizer An optional function used to sanitize the value.* @returns This function returns itself so that it may be chained* (e.g. `property('name', ctx.name)('title', ctx.title)`)** @codeGenApi*/el是html的原生element,即input field:
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