显示错误怎么办this.props.data.map is not a function

显示错误怎么办this.props.data.map is not a function

支持一下感觉挺不错的

显示错误怎么办this.props.data.map is not a function 这个是jquery构造的问题，jquery官方非常多的提醒过这个，就是不要随便用prototype，会影响到jquery的遍历。 children的实现是一个遍历，你自定义了一个prototype，于是jquery就会遍历到这个，但你这个又是个函数，而不是一个jquery对象 而当你使用("#question_box p") 在jq内部就不是遍历来实现的，而是find find的实现 find: function( selector ) { // 当表达式不包含“,”符号时候 if ( this.length === 1 && !/,/.test(selector) ) { var ret = this.pushStack( [], "find", selector ); ret.length = 0; jQuery.find( selector, this[0], ret ); return ret; } // 当表达式包含“,”符号时候 else { var elems = jQuery.map(this, function(elem){ return jQuery.find( selector, elem ); }); return this.pushStack( /[^+>] [^+>]/.test( selector ) ? jQuery.unique( elems ) : elems, "find", selector ); } } //其中的jQuery.find是这样一个方法： jQuery.find = Sizzle.find; //而sizzle又是这样一个方法： var Sizzle = function(selector, context, results, seed) { results = results || []; context = context || document; if ( context.nodeType !== 1 && context.nodeType !== 9 ) return []; if ( !selector || typeof selector !== "string" ) { return results; } var parts = [], m, set, checkSet, check, mode, extra, prune = true; // Reset the position of the chunker regexp (start from head) chunker.lastIndex = 0; while ( (m = chunker.exec(selector)) !== null ) { parts.push( m[1] ); if ( m[2] ) { extra = RegExp.rightContext; break; } } if ( parts.length > 1 && origPOS.exec( selector ) ) { if ( parts.length === 2 && Expr.relative[ parts[0] ] ) { set = posProcess( parts[0] + parts[1], context ); } else { set = Expr.relative[ parts[0] ] ? [ context ] : Sizzle( parts.shift(), context ); while ( parts.length ) { selector = parts.shift(); if ( Expr.relative[ selector ] ) selector += parts.shift(); set = posProcess( selector, set ); } } } else { var ret = seed ? { expr: parts.pop(), set: makeArray(seed) } : Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context, isXML(context) ); set = Sizzle.filter( ret.expr, ret.set ); if ( parts.length > 0 ) { checkSet = makeArray(set); } else { prune = false; } while ( parts.length ) { var cur = parts.pop(), pop = cur; if ( !Expr.relative[ cur ] ) { cur = ""; } else { pop = parts.pop(); } if ( pop == null ) { pop = context; } Expr.relative[ cur ]( checkSet, pop, isXML(context) ); } } if ( !checkSet ) { checkSet = set; } if ( !checkSet ) { throw "Syntax error, unrecognized expression: " + (cur || selector); } if ( toString.call(checkSet) === "[object Array]" ) { if ( !prune ) { results.push.apply( results, checkSet ); } else if ( context.nodeType === 1 ) { for ( var i = 0; checkSet[i] != null; i++ ) { if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) { results.push( set[i] ); } } } else { for ( var i = 0; checkSet[i] != null; i++ ) { if ( checkSet[i] && checkSet[i].nodeType === 1 ) { results.push( set[i] ); } } } } else { makeArray( checkSet, results ); } if ( extra ) { Sizzle( extra, context, results, seed ); } return results; };