psql:zammad.sql:22: ERROR: syntax error at or near "`"

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-- Original code:
CREATE TABLE `my_table` (
  `id` serial PRIMARY KEY,
  `name` varchar(255)
);

-- Modified code removing backticks and using double quotes:
CREATE TABLE "my_table" (
  "id" serial PRIMARY KEY,
  "name" varchar(255)
);

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

useRef

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39

/*
	A common use case is to access a child imperatively: 
*/

function TextInputWithFocusButton() {
  const inputEl = useRef(null);
  const onButtonClick = () => {
    // `current` points to the mounted text input element
    inputEl.current.focus();
  };
  return (
    <>
      <input ref={inputEl} type="text" />
      <button onClick={onButtonClick}>Focus the input</button>
    </>
  );
}

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Source: reactjs.org

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Contributed on Mar 29 2020

siberi

0 Answers Avg Quality 2/10

useref

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2

import { useRef } from "react";

function TextInputWithFocusButton() {
  const inputEl = useRef(null);
  
  const onButtonClick = () => {
    // `current` points to the mounted text input element
    inputEl.current.focus();
  };
  
  return (
    <>
      <input ref={inputEl} type="text" />
      <button onClick={onButtonClick}>Focus the input</button>
    </>
  );
}

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Contributed on Jan 03 2022

Inquisitive Iguana

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useref

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2

function TextInputWithFocusButton() {
 const inputEl = useRef(null);
 const onButtonClick = () => {
    inputEl.current.focus();
  };
return (
    <>
      <input ref={inputEl} type="text" />
      <button onClick={onButtonClick}>Focus</button>
    </>
  );
}

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Contributed on Sep 23 2022

Olexxandr_S

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useRef

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2

/**
 * Accessing DOM elements
 *
 * Another useful application of the useRef() hook is to access DOM elements.
 * This is performed in 3 steps:
 * 
 * - Define the reference to access the element const elementRef = useRef();
 * - Assign the reference to ref attribute of the element: <div ref={elementRef}></div>;
 * - After mounting, elementRef.current points to the DOM element.
 */

import { useRef, useEffect } from 'react';
function AccessingElement() {
  const elementRef = useRef();
   useEffect(() => {
    const divElement = elementRef.current;
    console.log(divElement); // logs <div>I'm an element</div>
  }, []);
  return (
    <div ref={elementRef}>
      I'm an element
    </div>
  );
}

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Contributed on Oct 03 2022

Strange Squirrel

0 Answers Avg Quality 2/10

useref

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2

  const inputEl = useRef(null);

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Source: Grepper

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Contributed on May 04 2021

Elegant Elephant

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useRef

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0

function TextInputWithFocusButton() {
  const inputEl = useRef(null);
  const onButtonClick = () => {
    // `current` 指向已挂载到 DOM 上的文本输入元素
    inputEl.current.focus();
  };
  return (
    <>
      <input ref={inputEl} type="text" />
      <button onClick={onButtonClick}>Focus the input</button>
    </>
  );
}

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Source: zh-hans.reactjs.org

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Contributed on Dec 17 2021

Macshion

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useRef

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0

import { useRef, useState, useEffect } from 'react';
function Stopwatch() {
  const timerIdRef = useRef(0);
  const [count, setCount] = useState(0);
  const startHandler = () => {
    if (timerIdRef.current) { return; }
    timerIdRef.current = setInterval(() => setCount(c => c+1), 1000);
  };
  const stopHandler = () => {
    clearInterval(timerIdRef.current);
    timerIdRef.current = 0;
  };
  useEffect(() => {
    return () => clearInterval(timerIdRef.current);
  }, []);
  return (
    <div>
      <div>Timer: {count}s</div>
      <div>
        <button onClick={startHandler}>Start</button>
        <button onClick={stopHandler}>Stop</button>
      </div>
    </div>
  );
}

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Contributed on May 20 2022

Abdul Qadir Ghafoori

0 Answers Avg Quality 2/10

useRef

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0

import { useRef, useState, useEffect } from 'react';
function Stopwatch() {
  const timerIdRef = useRef(0);
  const [count, setCount] = useState(0);
  const startHandler = () => {
    if (timerIdRef.current) { return; }
    timerIdRef.current = setInterval(() => setCount(c => c+1), 1000);
  };
  const stopHandler = () => {
    clearInterval(timerIdRef.current);
    timerIdRef.current = 0;
  };
  useEffect(() => {
    return () => clearInterval(timerIdRef.current);
  }, []);
  return (
    <div>
      <div>Timer: {count}s</div>
      <div>
        <button onClick={startHandler}>Start</button>
        <button onClick={stopHandler}>Stop</button>
      </div>
    </div>
  );
}

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Source: dmitripavlutin.com

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Contributed on May 20 2022

Abdul Qadir Ghafoori

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useRef

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import { useRef } from "react";

// Xử lý handle : inputRefTodo.current.focus()

// gắn vào input : ref={inputRefTodo}

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Contributed on Mar 10 2023

Horrible Horse

0 Answers Avg Quality 2/10

psql:zammad.sql:22: ERROR: syntax error at or near "`"

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