{"id":3077,"date":"2024-11-10T10:46:11","date_gmt":"2024-11-10T02:46:11","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3077\/"},"modified":"2024-11-10T10:46:11","modified_gmt":"2024-11-10T02:46:11","slug":"eval-%e5%87%bd%e6%95%b0%e5%9c%a8%e5%8a%a8%e6%80%81%e8%b0%83%e7%94%a8%e5%87%bd%e6%95%b0%e6%97%b6%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86%e5%8f%82%e6%95%b0%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3077\/","title":{"rendered":"Eval() \u51fd\u6570\u5728\u52a8\u6001\u8c03\u7528\u51fd\u6570\u65f6\u5982\u4f55\u5904\u7406\u53c2\u6570\u7c7b\u578b\uff1f"},"content":{"rendered":"

\"Eval()<\/p>\n

js\u4e2d\u4f7f\u7528\u53ef\u53d8\u51fd\u6570\u540d\u548c\u53c2\u6570<\/strong><\/p>\n

\u672c\u6587\u63a2\u8ba8\u5982\u4f55\u4f7f\u7528\u4f20\u5165\u7684\u53d8\u91cf\u4f5c\u4e3a\u8981\u8c03\u7528\u7684\u51fd\u6570\u540d\u548c\u53c2\u6570\u3002<\/p>\n

\u95ee\u9898\uff1a\u51fd\u6570\u8c03\u7528\u7684eval()\u7528\u6cd5<\/strong><\/p>\n

\u95ee\u9898\u4ee3\u7801\u4e2d\u5c1d\u8bd5\u4f7f\u7528eval()\u6765\u52a8\u6001\u751f\u6210\u51fd\u6570\u8c03\u7528\uff0c\u4f46\u53ea\u6709\u4e00\u79cd\u5199\u6cd5\u53ef\u4ee5\u6b63\u5e38\u8fd0\u884c\uff1a<\/p>\n

eval(func+'(func_parm1,func_parm2)');<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
eval(func+'('+func_parm1+','+func_parm2+')'); \/\/ \u65e0\u6cd5\u6b63\u5e38\u8fd0\u884c<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u7b54\u6848\uff1a\u53c2\u6570\u4f20\u9012\u4e2d\u7684<\/strong><\/p>\n
eval()\u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u4f5c\u4e3a\u53c2\u6570\u4e2d\u7684\u4ee3\u7801\u8fdb\u884c\u6c42\u503c\u3002typeof(func)\u662f\u5b57\u7b26\u4e32\uff0c\u4f46typeof(func_parm1)\u662f\u5bf9\u8c61\u3002\u5728\u9017\u53f7\u64cd\u4f5c\u7b26\u7684\u4f5c\u7528\u4e0b\uff0cfunc_parm1\u88ab\u4e3a\u5b57\u7b26\u4e32\uff0c\u503c\u4e3a\u201cfunc_parm1\u201d\u3002<\/p>\n
\u56e0\u6b64\uff0c\u7b2c\u4e00\u79cd\u5199\u6cd5\u5b9e\u9645\u6267\u884c\u7684\u662f\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n
eval(\"change(func_parm1,func_parm2)\");\n\/\/ \u7b49\u4ef7\u4e8e\neval(\"change('func_parm1','func_parm2')\");<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u800c\u7b2c\u4e8c\u79cd\u5199\u6cd5\u5bfc\u81f4\u4e86\u9519\u8bef\uff0c\u56e0\u4e3a\u5b83\u5c1d\u8bd5\u6267\u884c\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n
eval(\"change(object,func_parm2)\");\n\/\/ \u7b49\u4ef7\u4e8e\neval(\"change(Object.toString(),'func_parm2')\");<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u7531\u4e8e\u5bf9\u8c61\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u540e\u662f\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u65e0\u6cd5\u6210\u529f\u8c03\u7528\u51fd\u6570\u3002<\/p>\n
\u7ed3\u8bba<\/strong><\/p>\n
\u5728\u4f7f\u7528eval()\u5bf9\u53ef\u53d8\u51fd\u6570\u540d\u548c\u53c2\u6570\u8fdb\u884c\u52a8\u6001\u8c03\u7528\u65f6\uff0c\u5fc5\u987b\u786e\u4fdd\u4f20\u5165\u7684\u53c2\u6570\u7c7b\u578b\u4e0e\u51fd\u6570\u5b9a\u4e49\u4e2d\u7684\u53c2\u6570\u7c7b\u578b\u5339\u914d\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fEval() \u51fd\u6570\u5728\u52a8\u6001\u8c03\u7528\u51fd\u6570\u65f6\u5982\u4f55\u5904\u7406\u53c2\u6570\u7c7b\u578b\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
js\u4e2d\u4f7f\u7528\u53ef\u53d8\u51fd\u6570\u540d\u548c\u53c2\u6570 \u672c\u6587\u63a2\u8ba8\u5982\u4f55\u4f7f\u7528\u4f20\u5165\u7684\u53d8\u91cf\u4f5c\u4e3a\u8981\u8c03\u7528\u7684\u51fd\u6570\u540d\u548c\u53c2\u6570\u3002 \u95ee\u9898\uff1a\u51fd\u6570\u8c03\u7528\u7684eval()\u7528\u6cd5 \u95ee\u9898\u4ee3\u7801\u4e2d\u5c1d\u8bd5\u4f7f\u7528eval()\u6765\u52a8\u6001\u751f\u6210\u51fd\u6570\u8c03\u7528\uff0c\u4f46\u53ea\u6709\u4e00\u79cd\u5199\u6cd5\u53ef\u4ee5\u6b63\u5e38\u8fd0\u884c\uff1a eval(func+'(func_parm1,func_parm2)’); \u767b\u5f55\u540e\u590d\u5236 eval(func+'(‘+func_parm1+’,’+func_parm2+’)’); \/\/ \u65e0\u6cd5\u6b63\u5e38\u8fd0\u884c \u767b\u5f55\u540e\u590d\u5236 \u7b54\u6848\uff1a\u53c2\u6570\u4f20\u9012\u4e2d\u7684 eval()\u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u4f5c\u4e3a\u53c2\u6570\u4e2d\u7684\u4ee3\u7801\u8fdb\u884c\u6c42\u503c\u3002typeof(func)\u662f\u5b57\u7b26\u4e32\uff0c\u4f46typeof(func_parm1)\u662f\u5bf9\u8c61\u3002\u5728\u9017\u53f7\u64cd\u4f5c\u7b26\u7684\u4f5c\u7528\u4e0b\uff0cfunc_parm1\u88ab\u4e3a\u5b57\u7b26\u4e32\uff0c\u503c\u4e3a\u201cfunc_parm1\u201d\u3002 \u56e0\u6b64\uff0c\u7b2c\u4e00\u79cd\u5199\u6cd5\u5b9e\u9645\u6267\u884c\u7684\u662f\u4ee5\u4e0b\u4ee3\u7801\uff1a eval(“change(func_parm1,func_parm2)”); \/\/ \u7b49\u4ef7\u4e8e eval(“change(‘func_parm1′,’func_parm2′)”); \u767b\u5f55\u540e\u590d\u5236 \u800c\u7b2c\u4e8c\u79cd\u5199\u6cd5\u5bfc\u81f4\u4e86\u9519\u8bef\uff0c\u56e0\u4e3a\u5b83\u5c1d\u8bd5\u6267\u884c\u4ee5\u4e0b\u4ee3\u7801\uff1a eval(“change(object,func_parm2)”); \/\/ \u7b49\u4ef7\u4e8e eval(“change(Object.toString(),’func_parm2’)”); \u767b\u5f55\u540e\u590d\u5236 \u7531\u4e8e\u5bf9\u8c61\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u540e\u662f\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u65e0\u6cd5\u6210\u529f\u8c03\u7528\u51fd\u6570\u3002 \u7ed3\u8bba \u5728\u4f7f\u7528eval()\u5bf9\u53ef\u53d8\u51fd\u6570\u540d\u548c\u53c2\u6570\u8fdb\u884c\u52a8\u6001\u8c03\u7528\u65f6\uff0c\u5fc5\u987b\u786e\u4fdd\u4f20\u5165\u7684\u53c2\u6570\u7c7b\u578b\u4e0e\u51fd\u6570\u5b9a\u4e49\u4e2d\u7684\u53c2\u6570\u7c7b\u578b\u5339\u914d\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002 \u4ee5\u4e0a\u5c31\u662fEval() \u51fd\u6570\u5728\u52a8\u6001\u8c03\u7528\u51fd\u6570\u65f6\u5982\u4f55\u5904\u7406\u53c2\u6570\u7c7b\u578b\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3077","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3077","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3077"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3077\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}