[getStrFullLength.js] #js

getStrFullLength.js

const getStrFullLength = (str = '') =>
  str.split('').reduce((pre, cur) => {
    const charCode = cur.charCodeAt(0);
    console.log(cur, charCode)
    if(charCode >= 0&& charCode <= 128) {
      return pre + 1;
    } else {
      return pre + 2;
    }
  }, 0)

const fullLength = getStrFullLength('你好 React!')
console.log(fullLength)



const cutStrByFullLength = (str = '', maxLength) => {
  let showLength = 0;
  return str.split('').reduce((pre, cur) => {
    const charCode = cur.charCodeAt(0);
    if (charCode >= 0 && charCode <= 128) {
      showLength += 1;
    } else {
      showLength += 2;
    }
    if (showLength <= maxLength) {
      return pre + cur;
    }
    return pre;
  }, '');
};

const cutStr = cutStrByFullLength('React is a Good UI Componet!', 16)
console.log(cutStr)