在Typescript中导入一个简单的Javascript文件

Question

I'm using the ionic 2 beta and I try to make a simple calculator for learning. I want to use the math.js library ( http://mathjs.org ) but I don't know how to import this file to use it in my typescript code.

For example:

export class HomePage
{
    constructor() {}

    calculate()
    {
        // Here I want to use math.js
    }
}

I tried the following:

export class HomePage
{
    var m = require('path/to/math.js');

    constructor() {}

    calculate()
    {
        m.math.parse(expression); // assuming expression is defined
    }
}

But I get the error undefined is not an object (evaluating 'm.math.parse')

Answer 1

您可以在index.html添加脚本，例如

<script src="path/to/math.js"></script>