Instructions for using the console.assert method in node.js_node.js

Method description:

This method is the same as assert.ok(). If the expression evaluates to false, an AssertionError will be thrown along with the message

Grammar:

Copy code The code is as follows:

console.assert(expression, [message])

Receive parameters:

expression                                                  

message Error message

Example:

Copy code The code is as follows:

var a = 0;
console.assert(a == 1, 'error!');

Source code:

Copy code The code is as follows:

Console.prototype.assert = function(expression) {
if (!expression) {
var arr = Array.prototype.slice.call(arguments, 1);
​ require('assert').ok(false, util.format.apply(this, arr));
}
};