我想在 ionic 2/3 中禁用 ion-searchbar 以便只显示搜索栏但我们不能输入任何内容。我添加了，"disabled = true"但这不起作用。
你能提出一些建议吗？
我有一个离子日期时间。它正在发挥作用，但只能持续到今年及往后。
我想要的是从今年开始并继续下去。是否可以？
<ion-item>
<ion-label>Event Date</ion-label>
<ion-datetime displayFormat="D MMM, YY" pickerFormat="DD MMM YYYY" [(ngModel)]="eventDate">
</ion-datetime>
我想在单击按钮时更改第2行的背景颜色,但唯一改变的是整个背景.
function changeColor() {
document.body.style.backgroundColor = "black";
document.getElementByID("Div2").style.backgroundColor = "black";
}<div id="Div2">
<div>Line 1</div>
<div2 class="line">Line 2</div2>
<div>Line 3</div>
<button onclick="changeColor()">Change color</button>我想提取 Git 存储库的最新版本数。这是我到目前为止所做的：
#--- Checking out latest tag
printf "%bChecking out tag...%b\n" "${YELLOW}" "${GRAY}"
LATEST_TAG=$(git describe --tags)
printf "\nChecking out tag %b${LATEST_TAG}%b\n" "${YELLOW}" "${GRAY}"
git checkout -b V${LATEST_TAG%-*} ${LATEST_TAG}
我的问题是，如果git describe --tags返回这样的东西，1.0.0-39-gf8f8306我最终会创建一个分支V1.0.0-39。
我想要的是创建一个名为V1.0.0.
我有这个代码示例:
before('get all users', h => {
return getAllUsers().then(function (users) {
return h.supply.users = users;
});
});
我正在寻找一些速记,这是我能做的最好的吗？
before('get all users', h => {
return getAllUsers().then(v => (h.supply.users = v));
});
我在想,也许我们可以使用一些替代的分配技巧.
我有一个对象数组,我想先按日期排序,然后按其数值排序.
let arr = [
{date: 2018-06-19 12:05:43.232Z, value: 3},
{date: 2018-06-20 12:05:43.232Z, value: 4},
{date: 2018-06-18 12:05:43.232Z, value: 2},
{date: 2018-06-20 12:05:43.232Z, value: 4},
{date: 2018-06-19 12:05:43.232Z, value: 5},
{date: 2018-06-18 12:05:43.232Z, value: 5},
{date: 2018-06-20 12:05:43.232Z, value: 5},
{date: 2018-06-19 12:05:43.232Z, value: 4},
]
我想按日期和值对每个索引进行排序,结果如下:
let arr = [
{date: 2018-06-18 12:05:43.232Z, value: 2},
{date: 2018-06-18 12:05:43.232Z, value: 5},
{date: 2018-06-19 12:05:43.232Z, value: 3},
{date: 2018-06-19 12:05:43.232Z, value: 4},
{date: 2018-06-19 12:05:43.232Z, value: 5},
{date: 2018-06-20 12:05:43.232Z, value: …当我运行时npm run start，出现以下错误：
错误守望者 --no-pretty get-sockname 返回退出代码 = 1，信号 = 空，标准错误 = 2018-01-13T17:08:24,417: [0x7fff97db03c0] 计算 sockname: 未能创建 /usr/local/var/ run/watchman/11reed-state: 没有那个文件或目录
我让它运行良好，但我在捆绑 index.js 文件时出现错误，所以我卸载了 watchman 并重新安装，现在我遇到了这个错误。
我正在尝试将项目的角度版本更新为V6.但是我收到以下错误:
$ ng update @angular/cli
收集"@ schematics/angular/migrations/migration-collection.json"无法解析.
"dependencies": {
"@angular/animations": "^6.0.3",
"@angular/common": "^6.0.3",
"@angular/compiler": "^6.0.3",
"@angular/core": "^6.0.3",
"@angular/forms": "^6.0.3",
"@angular/http": "^6.0.3",
"@angular/platform-browser": "^6.0.3",
"@angular/platform-browser-dynamic": "^6.0.3",
"@angular/router": "^6.0.3",
"core-js": "^2.5.4",
"rxjs": "^6.0.0",
"zone.js": "^0.8.26",
"@angular/cdk": "5.0.0-rc.3",
"@angular/flex-layout": "^2.0.0-beta.12",
"@angular/material": "5.0.0-rc.3",
"angular2-json-schema-form": "^0.7.0-alpha.1",
"jsoneditor": "^5.14.0"
},
"devDependencies": {
"@angular/compiler-cli": "^6.0.3",
"@angular-devkit/build-angular": "~0.6.5",
"typescript": "~2.7.2",
"@angular/cli": "~6.0.5",
"@angular/language-service": "^6.0.3",
"@types/jasmine": "~2.8.6",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~8.9.4",
"codelyzer": "~4.2.1",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~1.7.1",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~1.4.2",
"karma-jasmine": "~1.1.1",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": …我使用CryptoJS而不是nodejscrypto模块,因为我只使用本机JavaScript,但有些代码不能工作:
function aesEncrypt(text, secKey) {
const _text = text
const lv = new Buffer('0102030405060708', 'binary')
const _secKey = new Buffer(secKey, 'binary')
const cipher = crypto.createCipheriv('AES-128-CBC', _secKey, lv)
let encrypted = cipher.update(_text, 'utf8', 'base64')
encrypted += cipher.final('base64')
return encrypted
}
那么我应该如何修改这些代码呢？