拨打

jQuery(".titre1").bind("click",$.fn.MonPlugin);

而不是

jQuery(".titre1").bind("click",MonPlugin);

使用此方式创建函数：

var MonPlugin = function() {
  jQuery(".size-60").css( widescreen )
};

或

function MonPlugin() {
  jQuery(".size-60").css( widescreen )
}

var widescreen = {
  "flex": "0 100%",
  "width": "100%",
  "-webkit-flex": "0 100%",
  "-moz-flex": "0 100%",
  "-ms-flex": "0 100%",
};

// a plugin declared like this is added to jQueryies prototype allowing
// you to add the method to the chain of functions. but you would need to modify
// your code just a tad.

jQuery.fn.MonPlugin = function() {
  // plugins have the collection of the selected elements so loop through them all
  this.each(function(){
    // create a new jQuery object with the current element and bind your function
    jQuery(this).on('click', MonPluginCallBack );
};

// to call your plugin you would use
jQuery('.titre1').MonPlugin();


// it seems that you just want a callback function so you should use

function MonPluginCallBack( event ){
  jQuery(".size-60").css(widescreen);
}

// here you are passing the function by reference
jQuery(".titre1").bind("click", MonPluginCallBack );

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