Javascript mathjs评估错误:(中间值)(中间值)(中间值)不是函数
如果我运行代码:Javascript mathjs评估错误:(中间值)(中间值)(中间值)不是函数,javascript,eval,mathjs,Javascript,Eval,Mathjs,如果我运行代码: obj = {}; obj['number'] = 1; obj['expressionS'] = 'Sin(0.5 * c1)'; obj['compiledExpressionS'] = null; let cnr = 'c' + obj.number; let params = {}; params[cnr] = 2; var parsedExpressionS = math.parse(obj.expr
obj = {};
obj['number'] = 1;
obj['expressionS'] = 'Sin(0.5 * c1)';
obj['compiledExpressionS'] = null;
let cnr = 'c' + obj.number;
let params = {};
params[cnr] = 2;
var parsedExpressionS = math.parse(obj.expressionS);
obj.compiledExpressionS = parsedExpressionS.compile();
let value = obj.compiledExpressionS.eval(params);
我将得到一个错误(在最后一行中抛出):
(中间值)(中间值)(中间值)不是函数。这里使用Mathjs库(文档:)。我不知道为什么会出现错误。问题是您没有遵守该值
obj.compiledExpressionS = parsedExpressionS.compile(math);
而Sin
应该是小写
工作小提琴:
工作代码
obj = {};
obj['number'] = 1;
obj['expressionS'] = 'sin(0.5 * c1)';
obj['compiledExpressionS'] = null;
let cnr = 'c' + obj.number;
let params = {};
params[cnr] = 2;
var parsedExpressionS = math.parse(obj.expressionS);
obj.compiledExpressionS = parsedExpressionS.compile(math);
let value = obj.compiledExpressionS.eval(params);
console.log(value);