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angular6 - Materializecss下拉初始化错误与角度6

问题描述

从 angular6 初始化下拉菜单时，它会引发错误

ERROR TypeError: Cannot set property 'tabIndex' of null
at n.value (materialize.min.js:6)
at new n (materialize.min.js:6)
at Function.value (materialize.min.js:6)
at Function.value (materialize.min.js:6)
at NavHeaderComponent.push../src/app/components/headers/nav-header/nav-header.component.ts.NavHeaderComponent.ngOnInit (nav-header.component.ts:24)
at checkAndUpdateDirectiveInline (core.js:9250)
at checkAndUpdateNodeInline (core.js:10514)
at checkAndUpdateNode (core.js:10476)
at debugCheckAndUpdateNode (core.js:11109)
at debugCheckDirectivesFn (core.js:11069)

下面是我用来初始化它的代码，

 ngOnInit() {
    const elems = document.querySelectorAll('.dropdown-trigger');
    const instances = M.Dropdown.init(elems);
  }

标签： angular6materialize

解决方案

把这个放在上面：

从 'materialize-css/dist/js/materialize' 导入 * 作为 M；

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