What code snippets do you use?

Hi. Sometimes, we create code snippets to help us. In a project, I needed to create an element and its attributes should have been set. I wasn't using jQuery or like libraries. I've created a JavaScript function like that.

const element = (data) => {
    const el = document.createElement(data["tag"])

    if(data["type"]) {
        el["type"] = data["type"]
    }

    if(data["id"]) {
        el["id"] = data["id"]
    }

    if(data["class"]) {
        const classList = data["class"]

        classList.map(m => {
            el.classList.add(m)
        })
    }

    if(data["text"]) {
        el["textContent"] = data["text"]
    }

    if(data["html"]) {
        el["innerHTML"] = data["html"]
    }

    if(data["attr"]) {
        const attr = data["attr"]
        const keys = Object.keys(data["attr"])

        keys.map(m => {
            el.setAttribute(m, attr[m])
        })
    }

    if(data["event"]) {
        const attr = data["event"]
        const keys = Object.keys(data["event"])

        keys.map(m => {
            const eventName = "on" + m
            el.setAttribute(eventName, attr[m])
        })
    }

    if(data["addTo"]) {
        const target = document.querySelectorAll(data["addTo"])

        target.forEach((m, i) => {
            m.appendChild(el)
        })
    }

    if(data["style"]) {
        const attr = data["style"]
        const keys = Object.keys(data["style"])
        let styleCode = '';
        keys.map(m => {
            const props = attr[m]
            const prop_keys = Object.keys(attr[m])

            styleCode += `${m} {`

            prop_keys.map(p => {
                styleCode += `${p}:${props[p]};`
            })

            styleCode += '}'
        })

        const style = document.createElement('style');
        style.type = 'text/css';
        style.innerHTML = styleCode;
        document.getElementsByTagName('head')[0].appendChild(style);
    }

    return el
}

This function always works for me. If you want to use this function you can use like this;

// Example Usage

element({
    'tag': 'button',
    'type': 'button',
    'addTo': '.test-body',
    'html': '<img src="https://cdn-images-1.medium.com/max/2000/0*uORWkYMjiF3LA-K8" />', // or text
    'id': 'user-card',
    'class': ['profile-link', 'avatar'],
    'attr': {
        'name': 'user-name',
        'value': 'Ali',
        'data-id': 1,
        'data-path': '/profile/1'
    },
    'event': {
        "click": `console.log(123)`
    },
    'style': {
        '.profile-link': {
            "color": "#fff",
            "background-color": "#000"
        },
        ".profile-link:hover": {
            "color": "#000",
            "background-color": "#fff",
            "border": "1px dashed #000;"
        },
        ".avatar": {
            "width": "300px",
            "height": "300px",
            "border": "1px dashed #e3e3e3;"
        },
        ".avatar img": {
            "width": "285px",
            "height": "285px"
        }
    }
})

Check it on the CodePen

Anyway, I wonder, what code snippets do you use?

Comments

[Albert Alises]

Specially for testing with Puppeteer I have some common functions that I reuse in most of the tests like login() or navigateToProject() or util functions to get properties from selectors, etc...

[Lavinia]

This is silly but I have a code snippet of htaccess to improve wordpress performance. It's just that my brain has never understood Regex :/
I also have code snippets for validations and other little things in vanilla javascript.

[tux0r]

I have no common "framework" for my projects as they all differ from each other too much. Sometimes I reuse certain code parts, especially in C, e.g. for accessing the file system. But that's always an exception.

[Itachi Uchiha]

What kind of codes? But I understand you. Sometimes you don't want to spend more times because of the same problems.

[tux0r]

e.g. for accessing the file system

:)

[Ross Henderson]

We have a few templates we use, and some reusable code snippets.

Stuff like:

Email Validations

case 
   when regexp_like(CUSTOMER_EMAIL_ADDRESS, '^[A-Za-z0-9_-]+(\.[A-Za-z0-9_-]+)*@[A-Za-z0-9_-]+(\.[A-Za-z0-9_-]+)*\.([a-z]{2,4})$') 
   then CUSTOMER_EMAIL_ADDRESS
   else null 
end as "EMAIL_ADDRESS"

Randomise Date Column

update
 TABLE
set
  DATE_COLUMN = TO_DATE(TRUNC(DBMS_RANDOM.value(TO_CHAR(date '2018-03-06','J'),TO_CHAR(CURRENT_TIMESTAMP,'J'))),'J');

Etc...

[Kasey Speakman]

I've had a discussion about snippets on here somewhere before. But for me and my programming style, I view code snippets as a horror. I can see that they would be useful for some cases, but those are cases I tend to avoid. What I often do is to create types and functions to encapsulate some code, put it in a library, and then reuse it in different projects.

[Mihail Malo]

Any reason you are using string index notation (data["addTo"]) and not dot notation (data.addTo)?

[Itachi Uchiha]

For example, I could have a key like that;

myObject['userName[]']

In this case, I can't use like that myObject.userName[]

There are many reasons to use index notation.

medium.com/@prufrock123/js-dot-not...

[Mihail Malo]

Yeah, but you don't.
There are many reasons not to, as well.

[Meghan (she/her)]

I use them so often I made my own library (github.com/nektro/basalt)

In particular of note, I have (github.com/nektro/basalt/blob/mast...)

[Itachi Uchiha]

This looks much better and cleaner.

[Adrian B.G.]

"The ones that do no use frameworks, end up making their own square wheel".

You should not have many snippets between projects, engines, frameworks and shared libs yes.

[Sagar]

clg => console.log()

[Debashis Dip]

I do have some common nginx config file suited for my projects, and some general python util functions that i need here and there