47
2022-09-05 08:27:19 47阅读 0喜欢
function downloadCSV(csv, filename) {  
    var csvFile;  
    var downloadLink;  
     
    //define the file type to text/csv  
    csvFile = new Blob([csv], {type: 'text/csv'});  
    downloadLink = document.createElement("a");  
    downloadLink.download = filename;  
    downloadLink.href = window.URL.createObjectURL(csvFile);  
    downloadLink.style.display = "none";  
  
    document.body.appendChild(downloadLink);  
    downloadLink.click();  
}
10
2022-09-05 08:26:25 10阅读 0喜欢
var hiddenElement = document.createElement('a');  
hiddenElement.href = 'data:text/csv;charset=utf-8,' + encodeURI(csv);  
hiddenElement.target = '_blank';  

//provide the name for the CSV file to be downloaded  
hiddenElement.download = 'Famous Personalities.csv';  
hiddenElement.click(); 
896访问人次
Camila Waz 2022-09-05 08:47:20
40
2022-09-02 19:01:05 40阅读 0喜欢
const heart_box = document.getElementById('heart')
// 创建标签
let element = document.createElement('div')
    element.id = `heart_${keyName}`
    element.style.cssText = styles.container
    heart_box.appendChild(element)

// 移除标签
setTimeout(function(){
  const heart_element = document.getElementById(`heart_${keyName}`)
  heart_box.removeChild(heart_element)
  const heart_style = document.getElementById(`heart_id_${keyName}`)
  document.head.removeChild(heart_style)
}, 3000)
88
2022-03-07 13:41:42 88阅读 0喜欢
  function animate(options) {
    var start = performance.now();
    requestAnimationFrame(function animate(time) {
      // timeFraction от 0 до 1
      var timeFraction = (time - start) / options.duration;
      if (timeFraction > 1) timeFraction = 1;

      // текущее состояние анимации
      var progress = options.timing(timeFraction)
      
      options.draw(progress);

      if (timeFraction < 1) {
        requestAnimationFrame(animate);
      }
    });
  }
169
2022-03-07 10:46:42 169阅读 0喜欢
  • readAsArrayBuffer(blob)– 以二进制格式读取数据ArrayBuffer。
  • readAsText(blob, [encoding])– 以给定编码的文本字符串形式读取数据(utf-8默认情况下)。
  • readAsDataURL(blob)– 读取二进制数据并将其编码为 base64 数据 url。
  • abort()– 取消操作。
  • 更多方法:https://javascript.info/file
45
2022-03-07 09:56:00 45阅读 0喜欢
<form id="formElem">
  <input type="text" name="name" value="John">
  <input type="text" name="surname" value="Smith">
  <input type="submit">
</form>

<script>
  formElem.onsubmit = async (e) => {
    e.preventDefault();

    let response = await fetch('/article/formdata/post/user', {
      method: 'POST',
      body: new FormData(formElem)
    });

    let result = await response.json();

    alert(result.message);
  };
</script>
26
2022-03-04 14:05:34 26阅读 0喜欢
console.log('%c Hi everyone!', 'color: #1c87c9; font-size: 18px');
console.log('%c Style 1! %c Style 2!',
  'color: #1c87c9; background: #ccc; font-size: 20px;', 
  'color: #8ebf42; background: # 666; font - size: 20 px;'
);
4
2022-03-04 13:46:49 4阅读 0喜欢
let number = 4579
let hexStr = number.toString(16)
console.log(hexStr)  // 11e3

let hexStr2 = '11e3'
let number2 = parseInt(hexStr2, 16)
console.log(number2)  // 4579
10
2022-03-04 13:37:21 10阅读 0喜欢
let str = "Hello People"
let encodedString = btoa(str)
console.log(encodedString) // "SGVsbG8gUGVvcGxl"

let dec = atob(encodedString)
console.log(dec) // "Hello People"