Spring批处理：有条件地执行步骤(Spring batch: conditional execution of steps)

 有两个常用选项。 
 
 你可以把this变成象that的对象或者self然后调用它。 
 
render: function () {
    var that = this;
    $('#slider').slider({
        min:0,
        max:100,
        slide: function(event, ui) {
           //HOW DO I CALL THE custom_function from here????
           that.custom_function();
        },

    });
},
 
 或者你可以绑定该函数的上下文。 
 
render: function () {
    $('#slider').slider({
        min:0,
        max:100,
        slide: (function(event, ui) {
           //HOW DO I CALL THE custom_function from here????
           this.custom_function();
        }).bind(this),

    });
}, 
 
 Function.prototype.bind仅$.proxy于ES5，所以使用_.bind或$.proxy作为跨浏览器支持 

There are two common options. 
 
You can either this into an object like that or self then call it.
 
render: function () {
    var that = this;
    $('#slider').slider({
        min:0,
        max:100,
        slide: function(event, ui) {
           //HOW DO I CALL THE custom_function from here????
           that.custom_function();
        },

    });
},
 
Or you can bind the context of the function.
 
render: function () {
    $('#slider').slider({
        min:0,
        max:100,
        slide: (function(event, ui) {
           //HOW DO I CALL THE custom_function from here????
           this.custom_function();
        }).bind(this),

    });
}, 
 
Function.prototype.bind is ES5 only so use _.bind or $.proxy for cross browser support