字符串转JSON

Question

要求快速实现以下要求：var str = 'a>b and b<c and c=d'// TODO: 将 `str` 字符串 转成 [{key: 'a', symbol: '>', value: 'b'}] 格式

Answer 1

var str = 'a>b and b<c and c=d';

var expressions = str.split('and');

var regExp = /[+-\\*%/><=]/;

var expArray = [];

for(var i=0;i<expressions.length;i++){

    var expression = expressions[i];

    var keyValue = expression.split(regExp);

    var item = {};

    item.key = keyValue[0];

    item.value = keyValue[1];

    item.symbol = expression.charAt(expression.search(regExp));

    expArray.push(item);

}

console.log(JSON.stringify(expArray));

Answer 2

console.log(str.split('and').map(v => v.trim()).reduce((pre, item) => {

    const reg = /(.*)([>=<])(.*)/g;

    const [t, name, symbol, value] = reg.exec(item);

    return [...pre, {name, symbol, value}];

},[]));