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jQuery noConflict
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| // Map over jQuery in case of overwrite | |
| _jQuery = window.jQuery, | |
| // Map over the $ in case of overwrite | |
| _$ = window.$, //前面有引入其他库时，为它的$,没有引入时，则为undefined | |
| noConflict: function( deep ) { | |
| if ( window.$ === jQuery ) { | |
| window.$ = _$; | |
| } | |
| if ( deep && window.jQuery === jQuery ) { | |
| window.jQuery = _jQuery; | |
| } | |
| return jQuery; | |
| } | |
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