javascript - 停止击倒错误

Question

当 knockout 失败时，如何向用户提示错误？ 而不是在控制台中默默地执行此操作:

Answer 1

看到这篇文章我相信是你想要的:Knockout catching errors , 但也请查看代码片段，也许会给您一些想法:

var ErrorHandlingBindingProvider = function() {
    var original = new ko.bindingProvider(); 
        //determine if an element has any bindings
    this.nodeHasBindings = original.nodeHasBindings;
    //return the bindings given a node and the bindingContext
    this.getBindings = function(node, bindingContext) {
        var result;
        try {
            result = original.getBindings(node, bindingContext);
        }
        catch (e) {
            //here you will do what you you want to do to show to user
            if (console && console.log) {
                console.log("Error in binding: " + e.message);   
            }
        }   
        return result;
    };
};

ko.bindingProvider.instance = new ErrorHandlingBindingProvider();

snippet by : RP Niemeyer