TypeScript helper.helper函数代码示例

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本文整理汇总了TypeScript中@ember/component/helper.helper函数的典型用法代码示例。如果您正苦于以下问题：TypeScript helper函数的具体用法？TypeScript helper怎么用？TypeScript helper使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了helper函数的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的TypeScript代码示例。

示例1: first8

import { helper as buildHelper } from '@ember/component/helper';

export function first8(params: any[] /*, hash*/) {
  return params[0].substring(0, 8);
}

export const helper = buildHelper(first8);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:7，代码来源:first-8.ts

示例2: or

import { helper as buildHelper } from '@ember/component/helper';

export function or(params: any[] /*, hash*/) {
  return params[0] || params[1];
}

export const helper = buildHelper(or);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:7，代码来源:or.ts

示例3: splitText

import { helper } from '@ember/component/helper';

export function splitText([string = '', maxLen = 20, separator = '...']: [string, number?, string?]): string {
  const { length: strLen } = string;
  const { length: sepLen } = separator;

  if (strLen > maxLen) {
    const splitLen = Math.floor((maxLen - sepLen) / 2);

    return `${string.substr(0, splitLen).trim()}${separator}${string.substr(-splitLen).trim()}`;
  }

  return string;
}

export default helper(splitText);

开发者ID:alyiwang，项目名称:WhereHows，代码行数:16，代码来源:split-text.ts

示例4: isPresent

import { helper as buildHelper } from '@ember/component/helper';
import { isPresent as eIsPresent } from '@ember/utils';

export function isPresent(params: any[] /*, hash*/) {
  return eIsPresent(params[0]);
}

export const helper = buildHelper(isPresent);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:8，代码来源:is-present.ts

示例5: function

class SessionService extends Ember.Service {
    currentUser: User;
}

const CurrentUserEmailHelper = Ember.Helper.extend({
    session: Ember.inject.service() as Ember.ComputedProperty<SessionService>,
    onNewUser: Ember.observer('session.currentUser', function(this: Ember.Helper) {
        this.recompute();
    }),
    compute(): string {
        return this.get('session')
            .get('currentUser')
            .get('email');
    },
});

import { helper } from '@ember/component/helper';

function typedHelp(/*params, hash*/) {
  return 'my type of help';
}

export default helper(typedHelp);

function arrayNumHelp(/*params, hash*/) {
  return [1, 2, 3];
}

helper(arrayNumHelp);

开发者ID:AlexGalays，项目名称:DefinitelyTyped，代码行数:29，代码来源:helper.ts

示例6: and

// https://github.com/DockYard/ember-composable-helpers/blob/master/addon/helpers/toggle.js
import { helper as buildHelper } from '@ember/component/helper';

export function and(params: any[] /*, hash*/) {
  return params[0] && params[1];
}

export const helper = buildHelper(and);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:8，代码来源:and.ts

示例7: preventDefault

import { helper as buildHelper } from '@ember/component/helper';

type PositionalArgs = [(...args: any) => void];

export function preventDefault([fn]: PositionalArgs /*, hash*/) {
  return (...args: any[]) => {
    const firstArg = args[0];

    if (firstArg && firstArg.preventDefault) {
      firstArg.preventDefault();
    }

    return fn(...args);
  };
}

export const helper = buildHelper(preventDefault);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:17，代码来源:prevent-default.ts

示例8: htmlSafe

import { helper as buildHelper } from '@ember/component/helper';
import { htmlSafe as makeSafe } from '@ember/string';

export function htmlSafe(params: any[] /*, hash*/) {
  return makeSafe(params[0]);
}

export const helper = buildHelper(htmlSafe);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:8，代码来源:html-safe.ts

示例9: mult

import { helper as buildHelper } from '@ember/component/helper';

export function mult(params: any[] /*, hash*/) {
  return params[0] * params[1];
}

export const helper = buildHelper(mult);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:7，代码来源:mult.ts

示例10: nextIndex

import { helper as buildHelper } from '@ember/component/helper';
import { get, set } from '@ember/object';
import { isPresent } from '@ember/utils';

function nextIndex(length: number, currentIdx: number) {
  if (currentIdx === -1 || currentIdx + 1 === length) {
    return 0;
  }

  return currentIdx + 1;
}

type PositionalArguments = [string, any, ...any[]];

export function toggle([prop, obj, ...values]: PositionalArguments) {
  return function() {
    let currentValue = get(obj, prop);

    if (isPresent(values)) {
      let currentIdx = values.indexOf(currentValue);
      let nextIdx = nextIndex(get(values, 'length'), currentIdx);

      return set(obj, prop, values[nextIdx]);
    }

    return set(obj, prop, !currentValue);
  };
}

export const helper = buildHelper(toggle);

开发者ID:NullVoxPopuli，项目名称:emberclear，代码行数:30，代码来源:toggle.ts

注：本文中的@ember/component/helper.helper函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。